INATURALIST Observations 1077374
Occurrence Remarks: CROTALUS VIRIDIS HELLERI (Southern Pacific Rattlesnake). MEXICO: BAJA CALIFORNIA SUR: 14.8 km (by road) NW (via Mexican Rt. 1) Vizcaino Junction. 4 November 1989. Bryan L. Starrett and Patrick T. Sweeney. Verified by L. Lee Grismer. Natural History Museum of Los Angeles County, Section of Herpetology Photographic Collection (LACM PC1224). Extends range 10 km S and 11.5 km W of nearest known locality, 26.5 km (by paved road) SSW El Arco, Baja California Norte (Ottley and Hunt 1981, Herpetol. Rev. 12:65). Submitted by BRYAN L. STARRETT, Herpetology Section, Phoenix Zoo, 455 North Galvin Parkway, Phoenix, Arizona 85003-3431, USA.; Coordinate Uncertainty in Meters: 0.11000.

INATURALIST Observations 1287920
Mulege, Baja California Sur: 27.882, -113.7093: : 8/20/2014: Andrew Gottscho: 20 Aug 2014 :
Occurrence Remarks: Out crossing the dirt road at 8:50 am local time. Large adult snake, held its ground rattling for quite some time while we photod it. Very cool to see one this far south at the southern limit of their range.; Coordinate Uncertainty in Meters: 50.00000.

INATURALIST Observations 108661875
Mulege, Baja California Sur: 27.897332, -113.806184: : 3/14/2022: Enrique Flores Garc├¡a: 14 Mar 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California Sur: 27.888917, -113.977578: : 2/21/2026: jsmarmon: 21 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Unknown, Baja California: 28.038265, -113.978884: : 7/23/2026: elisa1901: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Mulege, Baja California Sur: 27.984668, -113.753834: : 4/19/2024: Jake Scott: 19 Apr 2024 ; Coordinate Uncertainty in Meters: 29680.00000.

Ensenada, Baja California: 30.442231, -115.974186: : 8/8/2020: Claudia: 8 Aug 2020 ; Coordinate Uncertainty in Meters: 349.00000.

Ensenada, Baja California: 30.476459, -116.045501: : 5/5/2022: Jeff Alvarez: 5 May 2022 ; Coordinate Uncertainty in Meters: 66.00000.

Unknown, Baja California: 30.446838, -115.963869: : 3/21/2026: Jorge Figueroa: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Unknown, Baja California: 30.448611, -116.033295: : 3/28/2026: Jorge Figueroa: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 34.00000.

Ensenada, Baja California: 30.44135, -115.96235: : 9/26/2022: Guardaparques Terra Peninsular: 26 Sep 2022 ; Coordinate Uncertainty in Meters: 1.11000.

Ensenada, Baja California: 28.03829, -114.001221: : 3/11/2023: Arquimedes Hernandez T.: 11 Mar 2023 ; Coordinate Uncertainty in Meters: 2.00000.

Ensenada, Baja California: 30.469585, -115.990823: : 11/1/2023: Jes├║s Manuel Mart├¡nez-Calderas: 1 Nov 2023 ; Coordinate Uncertainty in Meters: 122.00000.

Ensenada, Baja California: 30.446388, -116.031486: : 8/15/2019: Chloe Novak: 15 Aug 2019 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 30.608931, -116.019318: : 2/19/2024: Eduardo D. Rold├ín: 19 Feb 2024 ; Coordinate Uncertainty in Meters: 81.00000.

Ensenada, Baja California: 30.622454, -116.009181: : 5/27/2025: Xavier A. Moreno: 27 May 2025 ; Coordinate Uncertainty in Meters: 576.00000.

Ensenada, Baja California: 30.492397, -115.999257: : 4/7/2022: Jeff Alvarez: 7 Apr 2022 ; Coordinate Uncertainty in Meters: 212.00000.

Ensenada, Baja California: 30.494653, -116.001267: : 4/7/2022: browngirlbiologist: 7 Apr 2022 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 30.494738, -116.001433: : 4/19/2022: Esteban Esquivias: 19 Apr 2022 ; Coordinate Uncertainty in Meters: 24.00000.

Ensenada, Baja California: 30.914625, -115.48722: : 6/3/2022: Jorge H. Valdez: 3 Jun 2022 ; Coordinate Uncertainty in Meters: 18.00000.

Ensenada, Baja California: 30.866903, -115.568108: : 10/14/2015: Carlos Gonzalez: 14 Oct 2015 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 30.578872, -116.01416: : 2/4/2026: Xavier A. Moreno: 4 Feb 2026 ; Coordinate Uncertainty in Meters: 179.00000.

Ensenada, Baja California: 30.893925, -115.480103: : 6/4/2017: bryanbrasmussen: 4 Jun 2017 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 30.893522, -115.480667: : 6/12/2014: Bradford Hollingsworth: 12 Jun 2014 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 30.894594, -115.479256: : 6/15/2021: Jorge H. Valdez: 15 Jun 2021 ; Coordinate Uncertainty in Meters: 50.00000.

Ensenada, Baja California: 30.914167, -115.48742: : 6/14/2021: Anny Peralta: 14 Jun 2021 ; Coordinate Uncertainty in Meters: 15.00000.

Ensenada, Baja California: 30.894021, -115.481189: : 6/15/2021: Jeff Alvarez: 15 Jun 2021 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Rancho Viejo; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 30.606772, -116.019765: : 2/19/2024: Guardaparques Terra Peninsular: 19 Feb 2024 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 30.606823, -116.019763: : 2/19/2024: sacorva: 19 Feb 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.690964, -116.659739: : 8/7/2025: Jorge Enrique Taylor Curiel: 7 Aug 2025 :
Occurrence Remarks:; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 13.00000.

Ensenada, Baja California: 31.110415, -115.633775: : 6/6/2025: Brian Simison: 6 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 30.99, -115.607: : 5/20/2025: ivy-m: 20 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 31.6862, -116.651169: : 5/4/2025: Jorge Enrique Taylor Curiel: 4 May 2025 ; Coordinate Uncertainty in Meters: 11.10000.

Ensenada, Baja California: 31.682358, -116.64549: : 4/21/2020: Cristian A. D. Meling L.: 21 Apr 2020 ; Coordinate Uncertainty in Meters: 6.00000.

Ensenada, Baja California: 31.68237, -116.645478: : 4/21/2020: Erik Meling: 21 Apr 2020 ; Coordinate Uncertainty in Meters: 7.00000.

Ensenada, Baja California: 31.683353, -116.619295: : 4/21/2020: Erik Meling: 21 Apr 2020 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 31.018176, -115.573758: : 8/8/2020: Jose Hiram Licona Hern├índez: 8 Aug 2020 ; Coordinate Uncertainty in Meters: 48.00000.

Unknown, Baja California: 30.999111, -115.555818: : 5/9/2026: Xochiquetzal Cervantes Hernandez: 9 May 2026 ; Coordinate Uncertainty in Meters: 545.00000.

Unknown, Baja California: 31.686361, -116.647436: : 4/5/2026: Jorge Enrique Taylor Curiel: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.002497, -115.551537: : 6/11/2026: Daniela Varela Zepeda: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Unknown, Baja California: 31.686517, -116.647517: : 6/12/2026: Jorge Enrique Taylor Curiel: 12 Jun 2026

Ensenada, Baja California: 31.040305, -115.570115: : 6/23/2020: Jose Hiram Licona Hern├índez: 23 Jun 2020 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 31.056161, -116.312308: : 4/3/2021: Jorge H. Valdez: 3 Apr 2021 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 30.971387, -115.655655: : 4/24/2018: Chris Gruenwald Herp.mx: 24 Apr 2018 ; Coordinate Uncertainty in Meters: 12.00000.

Ensenada, Baja California: 30.9187, -115.47161: : 6/24/2015: Jorge H. Valdez: 24 Jun 2015 ; Coordinate Uncertainty in Meters: 11.10000.

Ensenada, Baja California: 31.028367, -116.28364: : 10/6/2018: Sula Vanderplank: 6 Oct 2018 ; Coordinate Uncertainty in Meters: 1540.00000.

Ensenada, Baja California: 31.007814, -115.541481: : 8/26/2023: Erik Meling: 26 Aug 2023 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.007747, -115.541458: : 8/26/2023: Cristian A. D. Meling L.: 26 Aug 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.029167, -116.284721: : 10/6/2018: josuecampos: 6 Oct 2018 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.534554, -116.410039: : 4/27/2024: Davidpc: 27 Apr 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Injured on road; Coordinate Uncertainty in Meters: 6.00000.

Ensenada, Baja California: 30.968394, -115.602387: : 6/14/2024: Jonah Benningfield: 14 Jun 2024 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 31.005078, -115.558128: : 9/9/2024: Abigail Pi├▒a: 9 Sep 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.005, -115.558: : 9/9/2024: Abigail Pi├▒a: 9 Sep 2024 ; Coordinate Uncertainty in Meters: 111.00000.

Ensenada, Baja California: 31.692966, -116.643937: : 9/21/2024: kamefg: 21 Sep 2024 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 31.692986, -116.644017: : 9/21/2024: kamefg: 21 Sep 2024 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: Serpiente; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.041989, -115.732606: : 4/8/2025: Jorge H. Valdez: 8 Apr 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 31.846289, -116.587876: : 5/12/2025: prac_ensenada: 12 May 2025 ; Coordinate Uncertainty in Meters: 729.00000.

Ensenada, Baja California: 31.831431, -116.607386: : 5/15/2025: Diego Maldonado de la Torre: 15 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.876451, -116.679668: : 6/11/2025: Cristian A. D. Meling L.: 11 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.765097, -116.54129: : 2/20/2020: sacorva: 20 Feb 2020 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.879212, -116.66218: : 4/17/2020: Camilo Alejandro Cruz Arroyave: 17 Apr 2020 ; Coordinate Uncertainty in Meters: 199.00000.

Ensenada, Baja California: 31.717096, -116.713362: : 4/24/2020: Cristian A. D. Meling L.: 24 Apr 2020 ; Coordinate Uncertainty in Meters: 1700.00000.

Ensenada, Baja California: 31.881677, -116.669866: : 4/25/2020: Camilo Alejandro Cruz Arroyave: 25 Apr 2020 ; Coordinate Uncertainty in Meters: 200.00000.

Ensenada, Baja California: 31.876198, -116.660718: : 5/2/2020: Diego Maldonado de la Torre: 2 May 2020 :
Occurrence Remarks: Capturada y liberada lejos de la zona urbana; Coordinate Uncertainty in Meters: 26.00000.

Ensenada, Baja California: 31.876926, -116.678512: : 2/17/2022: Cristian A. D. Meling L.: 17 Feb 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.872675, -116.654761: : 3/27/2022: Diego Maldonado de la Torre: 27 Mar 2022 :
Occurrence Remarks: Encontrada y reubicada Found and relocated; Coordinate Uncertainty in Meters: 60.00000.

Ensenada, Baja California: 31.888186, -116.322455: : 4/11/2017: henryav: 11 Apr 2017 ; Coordinate Uncertainty in Meters: 61.00000.

Ensenada, Baja California: 31.876409, -116.679639: : 5/27/2022: Cristian A. D. Meling L.: 27 May 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.881692, -116.660487: : 5/30/2022: Cristian A. D. Meling L.: 30 May 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.876393, -116.67966: : 8/25/2022: Cristian A. D. Meling L.: 25 Aug 2022 ; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: Encontrada en recinto civil.; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 31.880317, -116.658333: : 2/19/2025: Miguel A. del R├¡o: 19 Feb 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.880547, -116.658188: : 2/19/2025: Miguel A. del R├¡o: 19 Feb 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.876292, -116.679825: : 9/9/2020: Cristian A. D. Meling L.: 9 Sep 2020 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.87332, -116.678373: : 9/9/2020: Cristian A. D. Meling L.: 9 Sep 2020 ; Coordinate Uncertainty in Meters: 61.00000.

Ensenada, Baja California: 31.872641, -116.657366: : 9/14/2020: Diego Maldonado de la Torre: 14 Sep 2020 ; Coordinate Uncertainty in Meters: 52.00000.

Ensenada, Baja California: 31.73335, -116.705554: : 4/22/2018: Cristian A. D. Meling L.: 22 Apr 2018 ; Coordinate Uncertainty in Meters: 207.00000.

Ensenada, Baja California: 31.879773, -116.66408: : 8/29/2022: Cristian A. D. Meling L.: 29 Aug 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.876438, -116.679707: : 9/5/2022: Cristian A. D. Meling L.: 5 Sep 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.877097, -116.679537: : 3/8/2019: esmeex: 8 Mar 2019 ; Coordinate Uncertainty in Meters: 6.00000.

Ensenada, Baja California: 31.877125, -116.67952: : 3/8/2019: lwu502: 8 Mar 2019 ; Coordinate Uncertainty in Meters: 5.00000.

Unknown, Baja California: 31.876328, -116.678991: : 3/5/2026: Cristian A. D. Meling L.: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.714333, -116.674614: : 3/14/2026: Jorge Enrique Taylor Curiel: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.693117, -116.659525: : 3/14/2026: Jorge Enrique Taylor Curiel: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.706417, -116.675947: : 3/29/2026: Jorge Enrique Taylor Curiel: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.797567, -116.573439: : 5/24/2017: Louise: 24 May 2017 ; Coordinate Uncertainty in Meters: 91.00000.

Ensenada, Baja California: 31.769103, -116.519888: : 8/9/2017: Miguel: 9 Aug 2017 ; Coordinate Uncertainty in Meters: 500.00000.

Ensenada, Baja California: 31.876589, -116.679216: : 5/27/2021: Hazel Bueno: 27 May 2021 ; Coordinate Uncertainty in Meters: 160.00000.

Ensenada, Baja California: 31.876439, -116.678894: : 5/27/2021: Cristian A. D. Meling L.: 27 May 2021 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.797643, -116.47969: : 10/24/2016: amarahal: 24 Oct 2016 ; Coordinate Uncertainty in Meters: 12.00000.

Ensenada, Baja California: 31.720861, -116.703722: : 5/1/2023: eriikajimenez: 1 May 2023 ; Coordinate Uncertainty in Meters: 232.00000.

Ensenada, Baja California: 31.875618, -116.679483: : 6/1/2023: Cristian A. D. Meling L.: 1 Jun 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.879311, -116.678089: : 6/1/2023: Cristian A. D. Meling L.: 1 Jun 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.872778, -116.654737: : 6/5/2023: Diego Maldonado de la Torre: 5 Jun 2023 ; Coordinate Uncertainty in Meters: 93.00000.

Ensenada, Baja California: 31.877196, -116.67824: : 7/11/2023: Cristian A. D. Meling L.: 11 Jul 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.875825, -116.664628: : 10/14/2023: patriciawarrior: 14 Oct 2023 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 31.876435, -116.679733: : 10/31/2023: Cristian A. D. Meling L.: 31 Oct 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.837694, -116.588152: : 4/21/2013: sirius8: 21 Apr 2013 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 31.871503, -116.656481: : 4/10/2024: Miguel Martinez: 10 Apr 2024 ; Coordinate Uncertainty in Meters: 23.00000.

Ensenada, Baja California: 31.880057, -116.677142: : 3/26/2019: Karla Gonz├ílez: 26 Mar 2019 ; Coordinate Uncertainty in Meters: 132.00000.

Ensenada, Baja California: 31.872204, -116.659946: : 5/20/2024: Diego Maldonado de la Torre: 20 May 2024 :
Occurrence Remarks: Roadkill; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.820749, -116.561367: : 6/1/2024: sirius8: 1 Jun 2024 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 31.705906, -116.685074: : 4/8/2019: Liliana Ortiz Serrato: 8 Apr 2019 :
Occurrence Remarks: Juvenil; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.847909, -116.58446: : 7/3/2024: prac_ensenada: 3 Jul 2024 ; Coordinate Uncertainty in Meters: 57.00000.

Ensenada, Baja California: 31.82341, -116.562519: : 7/26/2024: sirius8: 26 Jul 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.871969, -116.654324: : 9/2/2024: Jorge H. Valdez: 2 Sep 2024 ; Coordinate Uncertainty in Meters: 20.00000.

Ensenada, Baja California: 31.83929, -116.585612: : 9/26/2024: sirius8: 26 Sep 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.876425, -116.679676: : 3/20/2025: Cristian A. D. Meling L.: 20 Mar 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.836793, -116.591418: : 4/18/2025: nemophilist_tendencies: 18 Apr 2025 ; Coordinate Uncertainty in Meters: 64.00000.

Ensenada, Baja California: 31.830211, -116.60245: : 4/18/2025: Stu Pickell: 18 Apr 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 6.00000.

Ensenada, Baja California: 31.942944, -116.735642: : 8/1/2021: Oscar Alonso Corona Rodriguez: 1 Aug 2021 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Near front gate; Coordinate Uncertainty in Meters: 45991.00000.

Tijuana, Baja California: 32.412487, -117.244728: : 3/25/2016: Jorge H. Valdez: 25 Mar 2016 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.982562, -116.761841: : 6/1/2025: Mayte Fern├índez Ruiz: 1 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.89777, -116.675597: : 6/2/2025: Kristen Francis: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.98468, -116.755574: : 6/14/2025: Mariana Delgado-Fern├índez: 14 Jun 2025 ; Coordinate Uncertainty in Meters: 1.11000.

Ensenada, Baja California: 31.970259, -115.982236: : 7/16/2019: Rafael Paredes Montesinos: 16 Jul 2019 ; Coordinate Uncertainty in Meters: 61.00000.

Ensenada, Baja California: 32.032836, -115.934836: : 7/27/2016: costasalvaje2017: 27 Jul 2016 ; Coordinate Uncertainty in Meters: 5741.00000.

Ensenada, Baja California: 31.994779, -116.846582: : 9/27/2021: Luis Mariano Linares Guzm├ín: 27 Sep 2021 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.98677, -116.644556: : 6/30/2020: Vanessa Grijalva: 30 Jun 2020 ; Coordinate Uncertainty in Meters: 11.00000.

Tijuana, Baja California: 32.412467, -117.247304: : 9/22/2018: Jesus Gordolomi Butterball RC: 22 Sep 2018 ; Coordinate Uncertainty in Meters: 15.00000.

Ensenada, Baja California: 32.184495, -116.665833: : 4/20/2025: isabelgaribay: 20 Apr 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Ensenada, Baja California: 31.905338, -116.734695: : 10/18/2019: acastilop: 18 Oct 2019 ; Coordinate Uncertainty in Meters: 0.11000.

Tijuana, Baja California: 32.412551, -117.24648: : 9/22/2018: Jesus Gordolomi Butterball RC: 22 Sep 2018 ; Coordinate Uncertainty in Meters: 907.00000.

Ensenada, Baja California: 31.973746, -116.664239: : 5/19/2016: Mariana Novelo B.: 19 May 2016 ; Coordinate Uncertainty in Meters: 2178.00000.

Ensenada, Baja California: 31.924239, -116.715561: : 4/16/2020: Sarah Teck: 16 Apr 2020 ; Coordinate Uncertainty in Meters: 5636.00000.

Tecate, Baja California: 32.317638, -116.22514: : 5/9/2020: Cristian A. D. Meling L.: 9 May 2020 ; Coordinate Uncertainty in Meters: 8.00000.

Tecate, Baja California: 32.317813, -116.225067: : 5/9/2020: Erik Meling: 9 May 2020 ; Coordinate Uncertainty in Meters: 15.00000.

Ensenada, Baja California: 32.032417, -115.896797: : 5/20/2020: Mannuel Nevarez Flores: 20 May 2020 ; Coordinate Uncertainty in Meters: 16.00000.

Ensenada, Baja California: 32.068279, -115.90274: : 3/20/2017: Michiko: 20 Mar 2017 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.100462, -116.757234: : 1/24/2022: Sarah Teck: 24 Jan 2022 ; Coordinate Uncertainty in Meters: 45635.00000.

Ensenada, Baja California: 31.893988, -116.679902: : 4/27/2022: aniella55: 27 Apr 2022 ; Coordinate Uncertainty in Meters: 83.00000.

Ensenada, Baja California: 31.956895, -116.602395: : 4/29/2022: Erik Meling: 29 Apr 2022 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 32.028233, -116.872728: : 5/1/2022: ├ülvaro San Jos├⌐ Elizundia: 1 May 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: La serpiente se encontr├│ bajo un mont├│n de rocas cerca de la presa Abelardo Laguna Rodr├¡guez. La vegetaci├│n era un matorral muy deteriorado por sobrepastoreo, desarrollo industrial cercano y el constante paso de veh├¡culos todo terreno.; Coordinate Uncertainty in Meters: 15.00000.

Tecate, Baja California: 32.454219, -116.147988: : 5/17/2022: Ricardo Rivera: 17 May 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.897637, -116.675658: : 2/19/2025: Kristen Francis: 19 Feb 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Tijuana, Baja California: 32.407225, -116.898806: : 9/5/2020: Davidpc: 5 Sep 2020 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.045242, -115.9053: : 6/6/2022: Kristen Francis: 6 Jun 2022 ; Coordinate Uncertainty in Meters: 977.00000.

Ensenada, Baja California: 31.888428, -116.663588: : 2/19/2025: Miguel A. del R├¡o: 19 Feb 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.925597, -116.673295: : 6/26/2022: c_rubio: 26 Jun 2022 ; Coordinate Uncertainty in Meters: 24.00000.

Tijuana, California: 32.477545, -116.836539: : 4/27/2024: Jason Guo: 27 Apr 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Unknown, California: 32.448375, -117.092181: : 1/3/2026: hammondhou: 3 Jan 2026 ; Coordinate Uncertainty in Meters: 29093.00000.

Unknown, Baja California: 31.978931, -116.758364: : 4/22/2026: Davidpc: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 32.046685, -116.884251: : 4/23/2026: Melina Kust: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Unknown, Baja California: 32.046631, -116.883287: : 4/25/2026: Melina Kust: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Unknown, Baja California: 32.011745, -116.779381: : 2/22/2026: Dhamar: 22 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Tijuana, Baja California: 32.415231, -117.246508: : 2/6/2015: Jorge H. Valdez: 6 Feb 2015 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 32.417469, -117.260142: : 5/2/2026: villa: 2 May 2026 ; Coordinate Uncertainty in Meters: 181.00000.

Unknown, Baja California: 32.031617, -115.915909: : 10/13/2025: Vani: 13 Oct 2025 ; Coordinate Uncertainty in Meters: 567.00000.

Unknown, Baja California: 31.892038, -116.674921: : 3/19/2026: Enrique Ruiz: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Unknown, Baja California: 32.046678, -116.883212: : 3/25/2026: Melina Kust: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Unknown, Baja California: 31.934398, -116.708831: : 4/12/2026: Davidpc: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.978941, -116.75835: : 4/22/2026: dmariana: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.897833, -116.675713: : 9/9/2022: Kristen Francis: 9 Sep 2022 ; Coordinate Uncertainty in Meters: 36.00000.

Ensenada, Baja California: 32.003724, -115.955605: : 5/14/2013: John Sullivan: 14 May 2013 ; Coordinate Uncertainty in Meters: 2855.00000.

Ensenada, Baja California: 31.990717, -116.846177: : 9/26/2022: Jose Romero: 26 Sep 2022 ; Coordinate Uncertainty in Meters: 262.00000.

Ensenada, Baja California: 32.066314, -115.903205: : 9/12/2022: Jorge H. Valdez: 12 Sep 2022 ; Coordinate Uncertainty in Meters: 25.00000.

Tecate, Baja California: 32.411301, -116.042731: : 5/1/2021: claudio_castro: 1 May 2021 ; Coordinate Uncertainty in Meters: 93.00000.

Ensenada, Baja California: 31.915969, -116.602082: : 5/4/2021: Andrea Navarro: 4 May 2021 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.911995, -116.607068: : 3/14/2023: nicolexx5: 14 Mar 2023 ; Coordinate Uncertainty in Meters: 85.00000.

Occurrence Remarks: Mide aprox 50 cm, parece que est├í saliendo de un nido; Coordinate Uncertainty in Meters: 135.00000.

Ensenada, Baja California: 31.917973, -116.080073: : 6/9/2020: Arturo Ruiz Villanueva: 9 Jun 2020 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.994988, -116.854135: : 4/11/2023: Jose Romero: 11 Apr 2023 ; Coordinate Uncertainty in Meters: 296.00000.

Occurrence Remarks: Hace aprox. 3 semanas hab├¡a encontrado mi amigo una cr├¡a muy similar a esta serpiente, no soy un experto pero ver este ejemplar adulto me hace deducir que puede ser la misma especie; Coordinate Uncertainty in Meters: 160.00000.

Ensenada, Baja California: 31.999528, -116.752283: : 4/13/2023: Jorge H. Valdez: 13 Apr 2023 ; Coordinate Uncertainty in Meters: 81.00000.

Occurrence Remarks: Under acacia tree in front; Coordinate Uncertainty in Meters: 3250.00000.

Tijuana, Baja California: 32.505419, -116.808701: : 3/17/2013: zatarain: 17 Mar 2013 ; Coordinate Uncertainty in Meters: 2326.00000.

Ensenada, Baja California: 32.034819, -116.885405: : 7/10/2021: Melina Kust: 10 Jul 2021 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 31.96363, -115.994142: : 5/21/2023: Oscar Jimenez-Orocio: 21 May 2023 ; Coordinate Uncertainty in Meters: 1.11000.

Ensenada, Baja California: 31.911382, -116.67737: : 7/11/2023: Cristian A. D. Meling L.: 11 Jul 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Ejemplar juvenil de Crotalus oreganus helleri , encontrado atropellado en un camino frente al rancho San Jos├⌐ en San Antonio de las minas , Ensenada, Baja California. H├íbitat: Chaparral de monta├▒a.; Coordinate Uncertainty in Meters: 3530.00000.

Ensenada, Baja California: 31.920322, -116.075478: : 7/25/2021: Erik Meling: 25 Jul 2021 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 31.920339, -116.075456: : 7/25/2021: Cristian A. D. Meling L.: 25 Jul 2021 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.4259, -115.999027: : 8/8/2023: Julio Mendoza: 8 Aug 2023 ; Coordinate Uncertainty in Meters: 244.00000.

Ensenada, Baja California: 32.095628, -116.572572: : 12/1/2017: lizzette: 1 Dec 2017 ; Coordinate Uncertainty in Meters: 1840.00000.

Ensenada, Baja California: 32.082292, -115.865289: : 8/30/2023: Erik Meling: 30 Aug 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Tijuana, California: 32.494004, -117.028476: : 9/2/2023: tankniciansherps: 2 Sep 2023 ; Coordinate Uncertainty in Meters: 29093.00000.

Ensenada, Baja California: 31.992747, -116.77407: : 9/27/2021: Alan Harper: 27 Sep 2021 ; Coordinate Uncertainty in Meters: 4.00000.

Tijuana, Baja California: 32.411378, -117.24457: : 8/18/2015: Stephanie Taylor: 18 Aug 2015 ; Coordinate Uncertainty in Meters: 111.00000.

Playas de Rosarito, Baja California: 32.288125, -117.028283: : 10/3/2023: Carlos Gonzalez: 3 Oct 2023 ; Coordinate Uncertainty in Meters: 6.00000.

Tecate, Baja California: 32.438366, -116.113239: : 10/13/2023: Guillermo SG: 13 Oct 2023 ; Coordinate Uncertainty in Meters: 1727.00000.

Ensenada, Baja California: 32.047653, -116.882258: : 2/24/2024: Melina Kust: 24 Feb 2024 ; Coordinate Uncertainty in Meters: 61.00000.

Tijuana, California: 32.415466, -116.990448: : 4/15/2012: colanegra: 15 Apr 2012 ; Coordinate Uncertainty in Meters: 29093.00000.

Tijuana, California: 32.478632, -117.005126: : 4/7/2024: Jason Guo: 7 Apr 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Tijuana, California: 32.466563, -116.952875: : 4/7/2024: Jason Guo: 7 Apr 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Tecate, Baja California: 32.463825, -116.275474: : 4/10/2024: Leonardo Ponce: 10 Apr 2024 ; Coordinate Uncertainty in Meters: 442.00000.

Tijuana, California: 32.403943, -116.863132: : 4/12/2024: busbybio: 12 Apr 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Ensenada, Baja California: 31.941875, -116.032648: : 5/13/2024: Diego Maldonado de la Torre: 13 May 2024 :
Occurrence Remarks: Dark morph?; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.035446, -115.895065: : 5/20/2024: Rodrigo Beltran: 20 May 2024 ; Coordinate Uncertainty in Meters: 5754.00000.

Ensenada, Baja California: 32.07545, -116.065886: : 5/22/2024: Elias Aristides Elias: 22 May 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 32.075492, -116.06578: : 5/22/2024: Jorge H. Valdez: 22 May 2024 ; Coordinate Uncertainty in Meters: 9.00000.

Ensenada, Baja California: 32.341598, -115.949733: : 4/25/2024: Arturo Ruiz Villanueva: 25 Apr 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.045967, -115.896818: : 6/16/2024: Leonardo Ponce: 16 Jun 2024 ; Coordinate Uncertainty in Meters: 433.00000.

Ensenada, Baja California: 31.937904, -116.64847: : 6/22/2024: Diego Maldonado de la Torre: 22 Jun 2024 :
Occurrence Remarks: Relocated; Coordinate Uncertainty in Meters: 29173.00000.

Occurrence Remarks: Liberada del CETMAR 11; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 32.094433, -116.864913: : 4/26/2019: Anny Peralta: 26 Apr 2019 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 32.047602, -116.883029: : 8/27/2024: Melina Kust: 27 Aug 2024 ; Coordinate Uncertainty in Meters: 824.00000.

Tijuana, Baja California: 32.416283, -117.248178: : 9/6/2024: william_hoyer: 6 Sep 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.98442, -116.762113: : 9/8/2024: Mariana Delgado-Fern├índez: 8 Sep 2024 ; Coordinate Uncertainty in Meters: 1.11000.

Tijuana, Baja California: 32.461922, -117.033063: : 10/8/2020: rxavier: 8 Oct 2020 ; Coordinate Uncertainty in Meters: 574.00000.

Ensenada, Baja California: 31.927558, -116.706122: : 7/19/2021: c_rubio: 19 Jul 2021 ; Coordinate Uncertainty in Meters: 6.00000.

Tijuana, Baja California: 32.409146, -117.244041: : 5/10/2013: Arturo Ruiz Villanueva: 10 May 2013 ; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: Found at night near sliding glass door near kitchen; Coordinate Uncertainty in Meters: 17660.00000.

Tijuana, Baja California: 32.452323, -116.906254: : 10/4/2024: Davidpc: 4 Oct 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Playas de Rosarito, Baja California: 32.125932, -116.811572: : 10/4/2024: Oscar Jimenez-Orocio: 4 Oct 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.036706, -116.774088: : 4/26/2019: Ernesto: 26 Apr 2019 ; Coordinate Uncertainty in Meters: 1870.00000.

Ensenada, Baja California: 31.984835, -116.754822: : 7/23/2024: Mayte Fern├índez Ruiz: 23 Jul 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Tijuana, Baja California: 32.448433, -116.910586: : 5/18/2019: anthony_vega: 18 May 2019 ; Coordinate Uncertainty in Meters: 103.00000.

Tijuana, Baja California: 32.369167, -116.648331: : 5/12/2019: josuecampos: 12 May 2019 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.048253, -116.121269: : 5/26/2019: Erik Meling: 26 May 2019 ; Coordinate Uncertainty in Meters: 6.00000.

Tijuana, Baja California: 32.417513, -117.248812: : 5/25/2019: Sula Vanderplank: 25 May 2019 ; Coordinate Uncertainty in Meters: 30.00000.

Occurrence Remarks: Cascabel de Isla Coronado Sur; Coordinate Uncertainty in Meters: 100.00000.

Ensenada, Baja California: 31.91253, -116.595767: : 4/11/2025: ANGEL RUBEN NOE JIMENEZ: 11 Apr 2025 :
Occurrence Remarks: V├¡bora; Coordinate Uncertainty in Meters: 13.00000.

Tecate, Baja California: 32.482316, -116.355388: : 4/23/2025: Davidpc: 23 Apr 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.912462, -116.595648: : 4/11/2025: Fabrix: 11 Apr 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Tijuana, Baja California: 32.397425, -117.242284: : 6/21/2019: marioleal85: 21 Jun 2019 ; Coordinate Uncertainty in Meters: 2.00000.

Unknown, Baja California: 31.908644, -116.726176: : 7/23/2026: Sarah Teck: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 25.00000.

San Diego, California: 32.644567, -117.013558: : 10/26/2025: perezmsoph: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.645053, -117.013227: : 10/26/2025: Linda Pardy: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 26.00000.

San Diego, California: 32.652713, -116.707528: : 10/26/2025: Mary Duffy: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Rattlesnake; Coordinate Uncertainty in Meters: 159.00000.

San Diego, California: 32.645191, -117.013143: : 10/26/2025: Anna Arft: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 17.00000.

Unknown, California: 32.527431, -117.126217: : 7/14/2026: nathantay: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 29093.00000.

San Diego, California: 32.537819, -117.178023: : 4/20/2024: Jason Guo Θâ¡τ┤½σ«╕: 20 Apr 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Occurrence Remarks: DOA may be 18ΓÇ¥-2ΓÇÖ max only 3 buttons; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 32.58416, -116.922233: : 4/21/2026: littlebrownbeetle: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Parque el Profesor; Coordinate Uncertainty in Meters: 6.00000.

Tecate, Baja California: 32.570541, -116.067809: : 6/7/2016: Juan Carlos P├⌐rez Maga├▒a: 7 Jun 2016 ; Coordinate Uncertainty in Meters: 1749.00000.

Tecate, Baja California: 32.570541, -116.067809: : 6/11/2016: Juan Carlos P├⌐rez Maga├▒a: 11 Jun 2016 ; Coordinate Uncertainty in Meters: 1749.00000.

Tecate, Baja California: 32.549158, -116.363233: : 6/4/2014: MiltonRuiz: 4 Jun 2014 ; Coordinate Uncertainty in Meters: 29093.00000.

GBIFID: 4171397214;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 4127305421;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4127224447;; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.633042, -117.07717: : 3/27/2026: Parsa Fard: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

Occurrence Remarks: Dish is 11ΓÇ¥. After snake left I measured based on placement of snake in photo and estimate at least 46ΓÇ¥ long.; Coordinate Uncertainty in Meters: 18.00000.

San Diego, California: 32.563013, -117.124568: : 4/19/2026: ibhappy: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 32.640429, -117.111416: : 5/26/2026: Opal: 26 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.542739, -117.106586: : 5/28/2026: Matt Sadowski: 28 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.6059, -116.362029: : 5/2/2026: california_every_reptile: 2 May 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4121436346; Occurrence Remarks: lilguy chilln under a log;; Coordinate Uncertainty in Meters: 12.00000.

San Diego, California: 32.578547, -117.005921: : 2/27/2026: Sara Allen: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.560589, -117.123959: : 3/10/2026: Charles Giannini: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 22.00000.

San Diego, California: 32.647096, -116.482782: : 3/12/2026: Martha Aldrete: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.561712, -117.109405: : 3/12/2026: sally_brown: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 32.554789, -117.086536: : 3/12/2026: Glenn Perelson: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 123.00000.

San Diego, California: 32.640522, -117.111017: : 5/27/2026: sally_brown: 27 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.56948, -117.007339: : 4/28/2026: nathantay: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.543444, -117.107957: : 5/11/2026: Demi Eslava: 11 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.543472, -117.107894: : 5/11/2026: sally_brown: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Lifer subspecies; Coordinate Uncertainty in Meters: 29093.00000.

Unknown, California: 32.506804, -117.063817: : 1/3/2026: Jason Guo Θâ¡τ┤½σ«╕: 3 Jan 2026 ; Coordinate Uncertainty in Meters: 29093.00000.

San Diego, California: 32.625495, -117.010445: : 1/31/2026: thenatureohana: 31 Jan 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 32.652724, -117.133438: : 4/5/2025: Chalon Boesel: 5 Apr 2025 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.633256, -117.183192: : 5/10/2025: Grateful Focus: 10 May 2025 ; Coordinate Uncertainty in Meters: 50310.00000.

San Diego, California: 32.56316, -117.125447: : 5/13/2026: ibhappy: 13 May 2026 ; Coordinate Uncertainty in Meters: 24.00000.

San Diego, California: 32.648052, -116.522595: : 5/12/2026: tomclymer: 12 May 2026 ; Coordinate Uncertainty in Meters: 586.00000.

San Diego, California: 32.636663, -117.111558: : 5/15/2026: Nancy Fernandez: 15 May 2026 ; Coordinate Uncertainty in Meters: 132.00000.

Unknown, Baja California: 32.56363, -116.071698: : 5/15/2026: Esteban Esquivias: 15 May 2026 ; Coordinate Uncertainty in Meters: 217.00000.

San Diego, California: 32.655732, -116.931174: : 3/17/2026: Jonny Sperling: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.609944, -116.504903: : 3/14/2026: Austin Pursley: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 825.00000.

Occurrence Remarks: Most likely southern pacific rattlesnake; Coordinate Uncertainty in Meters: 4.00000.

Unknown, Baja California: 32.532342, -117.119186: : 3/25/2026: Stephany Garcia: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 268.00000.

Tecate, Baja California: 32.583696, -116.100121: : 7/29/2025: No├⌐ Santiago: 29 Jul 2025 ; Coordinate Uncertainty in Meters: 15078.00000.

San Diego, California: 32.559977, -117.016974: : 10/12/2025: Elijah Short: 12 Oct 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Tecate, Baja California: 32.564103, -116.073036: : 10/6/2025: Esteban Esquivias: 6 Oct 2025 ; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 3455552330; Occurrence Remarks: A pair of young Southern Pacific Rattlesnake (Crotalus oreganus helleri) discovered in a trash pile, southwestern San Diego County, California These snakes were together beneath a board in this trash pile. Located across the street from a high school, this trash pile serviced an extensive agricultural area back in 2006. Looking at GoogleEarth, I see that area and its trash pile are now a housing development.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1837776202; Occurrence Remarks: San Diego County, California, US;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1838394184; Occurrence Remarks: neighbors yard we released in the canyon;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1839253446; Occurrence Remarks: San Diego County, California, US Make sure to click on the recording. This one was quite angry that we walked down the path next to which it was resting.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859582384; Occurrence Remarks: Baby;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1847537843; Occurrence Remarks: Accidental fatality. Was sleeping in front of the wheel of a parked truck. Still moving but it seems to be reflexive.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 1848764249; Occurrence Remarks: Almost stepped on it!;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 1880646279; Occurrence Remarks: Rattled briefly when I scared it. Mostly just tried to get away.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4062565929; Occurrence Remarks: Two rattlesnakes wrapped up under a flipped board.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5187773391; Occurrence Remarks: Small snake in rock crevice- zoomed out photo for scale- too cautious to put anything too close for scale. Head certainly looked rattlesnake like but my camera struggled to capture it;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4134151816; Occurrence Remarks: A large juvenile;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2028449088; Occurrence Remarks: Coiled in rodent nest beneath artificial cover.;; Coordinate Uncertainty in Meters: 29093.00000.

GBIFID: 2236235007; Occurrence Remarks: First one this season rescued from the neighbors yard;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4904338048; Occurrence Remarks: Catch & release (close, but away from houses).;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 3079479573; Occurrence Remarks: No rattle.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4974079683; Occurrence Remarks: About 12ΓÇ¥ only 1 button;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2244306572; Occurrence Remarks: While cleaning the backyard;; Coordinate Uncertainty in Meters: 105.00000.

GBIFID: 5154640997; Occurrence Remarks: Found dead, dropped by a hawk?;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5188342942; Occurrence Remarks: friends backyard;; Coordinate Uncertainty in Meters: 15542.00000.

GBIFID: 5216976319; Occurrence Remarks: Sorry for the graphic imageΓÇª I was road cruising for snakes but only saw one fresh DOR.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2610986638; Occurrence Remarks: Not sure what happened;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 1453225719; Occurrence Remarks: Deceased;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2850897522; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2856512727; Occurrence Remarks: Note the dozer tracks. This was a border fence casualty.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2868153898; Occurrence Remarks: Unfortunately, this snake had been run over.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 899966734; Occurrence Remarks: The next snake I found was a ruber coiled up under part of block wall but it went deep under before I could get any pics. Right on the other side of wall I flipped a piece of metal and found this big Oreganus.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2898497630; Occurrence Remarks: Crossing trail at Tijuana Estuary trails. Small, skinny. Foto by stranger passing by shared it to me for here... Could it be a Coastal?;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1668897227; Occurrence Remarks: Looked about 3.5 feet long, rattled, didnt get a good look at the patter on its back, was in a dry area, not too many other big animals around other than coyotes at night.;; Coordinate Uncertainty in Meters: 133.00000.

GBIFID: 1671720556; Occurrence Remarks: This appeared to be a rattlesnake snake because of the sound and the shape of its tail. This rattlesnake appears to be around 5-6 feet long but IΓÇÖm not sure. It was in very close proximity to sunlight and soil. I am unsure of its proximity to other consumers and producers. I would say that this snake is most likely a tertiary consumer.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1671720554; Occurrence Remarks: This snake was about 2 inches long very thick skin snake .Didnt look like it was really old. It was brown asky color,as well as black scales. Lower body is a tan color. He has beed black eyes.Moves quickly. He is a secondary consumer;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1668897711; Occurrence Remarks: It did have a rattleing sound to it. There was not water nearby, and it was out in the open in the chapparal. It was about a yard long and a glossy black in color.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1671720651; Occurrence Remarks: Its Physical Structure has a shape of a rubbery stick, it is about 4 feet in length, and is about 4 inches in width. Is it a Apex Consumer. The location it was founded, was in the trail. Some abiotic limiting resources it was near was Water, Soil, Sunlight. Some biotic Limiting Resources it was near was Producers and Consumers.;; Coordinate Uncertainty in Meters: 475.00000.

GBIFID: 1671720700; Occurrence Remarks: This rattlesnake was around 2 ft long. Its scales looked like they were black. A limiting biotic factor could be food source and a abiotic source could be wether and water.;; Coordinate Uncertainty in Meters: 151.00000.

San Diego, California: 32.615222, -116.947913: : 10/4/2017: Citlalli Elena Hernandez: 4 Oct 2017 :
GBIFID: 1668899865; Occurrence Remarks: This is a consumer.;; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.56054, -117.123806: : 8/23/2025: ibhappy: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 69.00000.

Occurrence Remarks: Rattle Snake; Coordinate Uncertainty in Meters: 43.00000.

Tijuana, Baja California: 32.521032, -117.122697: : 9/29/2017: Nisdao: 29 Sep 2017 ; Coordinate Uncertainty in Meters: 47.00000.

Tijuana, California: 32.538735, -117.042389: : 8/19/2017: Jake Scott: 19 Aug 2017 ; Coordinate Uncertainty in Meters: 29093.00000.

Tecate, Baja California: 32.512705, -116.583686: : 7/6/2021: El Zarco: 6 Jul 2021 ; Coordinate Uncertainty in Meters: 4548.00000.

San Diego, California: 32.568713, -117.126861: : 8/30/2025: jamesbyrne188: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Tecate, Baja California: 32.521186, -116.065634: : 6/15/2022: Ernesto Garc├¡a: 15 Jun 2022 ; Coordinate Uncertainty in Meters: 5218.00000.

Tijuana, California: 32.51107, -117.04766: : 2/12/2024: Jonathan Hakim: 12 Feb 2024 ; Coordinate Uncertainty in Meters: 29093.00000.

Tecate, Baja California: 32.564877, -116.177124: : 4/18/2024: Diego Maldonado de la Torre: 18 Apr 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.599757, -116.149537: : 4/18/2024: yoshizada: 18 Apr 2024 ; Coordinate Uncertainty in Meters: 374.00000.

Tecate, Baja California: 32.564953, -116.177178: : 4/18/2024: Sula Vanderplank: 18 Apr 2024 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.544962, -117.09903: : 9/9/2025: zacwahoo: 9 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.573081, -117.125509: : 7/18/2026: tinawiley: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Tecate, Baja California: 32.537984, -116.364387: : 4/19/2025: sophiacatzinn: 19 Apr 2025 ; Coordinate Uncertainty in Meters: 266.00000.

Occurrence Remarks: Found in our Neighbors yard rattling quite loudly. Removed and released in an area where it will be safer; Coordinate Uncertainty in Meters: 1.00000.

San Diego, California: 32.676376, -116.827599: : 9/6/2025: lauranvan: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Southern Pacific; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.697524, -116.81275: : 9/6/2025: jenblack: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 1120.00000.

Occurrence Remarks: Beauty!; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Relocated from 10038 Nuerto Lane, Spring Valley 91977

San Diego, California: 32.721863, -117.055959: : 3/27/2026: Parsa Fard: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.728868, -117.004277: : 3/27/2026: Parsa Fard: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

Occurrence Remarks: In the picture that has both a red diamond, rattlesnake, and another snake with it in the picture, and positioned higher within the shot, the intended snake, for this observation is the upper snake, and not the lower, red diamond rattlesnake; Coordinate Uncertainty in Meters: 17.00000.

San Diego, California: 32.679883, -116.821972: : 4/16/2026: mayerbri: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Flipped under cover at 65 degrees around 7 pm; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.746207, -116.800619: : 11/8/2025: mynat-3-: 8 Nov 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.775267, -116.917054: : 11/9/2025: sglevanik: 9 Nov 2025 ; Coordinate Uncertainty in Meters: 82.00000.

San Diego, California: 32.695, -117.246072: : 5/19/2026: Patricia Simpson: 19 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Diego, California: 32.677366, -117.242094: : 5/20/2026: Taro Katayama: 20 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 32.749387, -116.752208: : 5/20/2026: Leslie K Yoder: 20 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1272073478; Occurrence Remarks: I spotted this rattle snake in the SDSU college area of San Diego;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3873429513; Occurrence Remarks: came out on the trail;; Coordinate Uncertainty in Meters: 1.00000.

San Diego, California: 32.749384, -116.752357: : 2/25/2026: Leslie K Yoder: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Found on this rock at 4:59pm. 84ish degrees outside. 1st two photos taken with iphone 11. Last two were taken with Olympus OMD Mark ii with Olympus M.Zuiko 75-300mm lens.; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Different, younger snake than the one on my porch a few days ago.; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.749396, -116.752176: : 3/8/2026: Leslie K Yoder: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Deceased; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.694065, -116.899522: : 3/14/2026: oldbayhiker: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.723313, -116.946206: : 6/23/2026: rfoxstar: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3772987258; Occurrence Remarks: A big one! What a treat.;; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.71607, -116.427895: : 5/2/2026: Graham Montgomery: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.670015, -117.241802: : 3/17/2026: snbmkf: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 485.00000.

San Diego, California: 32.682334, -117.039161: : 1/3/2026: Jason Guo Θâ¡τ┤½σ«╕: 3 Jan 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.731413, -116.941605: : 8/28/2025: Stricky: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.663647, -116.928787: : 9/19/2025: herpsearch13: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 32.774769, -116.303467: : 5/14/2026: Rachel S.: 14 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.726925, -116.940247: : 5/18/2026: Justyn Stahl: 18 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

1309; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.69378, -117.010896: : 3/22/2026: P.M. Rodgers: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 379.00000.

San Diego, California: 32.676533, -116.939906: : 3/20/2026: cakesmooth: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 51.00000.

1309; Coordinate Uncertainty in Meters: 19.00000.

San Diego, California: 32.673758, -116.970572: : 3/28/2026: katchamp: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.696785, -116.938435: : 4/4/2026: Rachel Lee Harper: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.728462, -116.940138: : 4/4/2026: Mark Valen: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.661068, -116.959227: : 4/9/2026: Simon: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.745816, -116.799538: : 6/15/2026: mynat-3-: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 32.696132, -117.049723: : 10/1/2025: Anna Arft: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 77.00000.

GBIFID: 3455770043; Occurrence Remarks: Southern Pacific Rattlesnake (Crotalus oreganus helleri), southern San Diego County, California;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3457003908; Occurrence Remarks: Adult Southern Pacific Rattlesnake (Crotalus oreganus helleri) chilling ~0.5 m to the side of the trail, southern San Diego County, California;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3456164467; Occurrence Remarks: Juvenile Southern Pacific Rattlesnake (Crotalus oreganus helleri), southeastern San Diego County, California;; Coordinate Uncertainty in Meters: 400.00000.

GBIFID: 1838016224; Occurrence Remarks: Caught & released.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 3705796551; Occurrence Remarks: Juvenile;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 3759332626; Occurrence Remarks: Passive individual laying still on the trail. About 5ft;; Coordinate Uncertainty in Meters: 2022.00000.

GBIFID: 3764153476; Occurrence Remarks: A baby rattler in my front yard. Released into the preserve with Rangers permission.;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 3802278713; Occurrence Remarks: What kind of snake is this?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 891098317; Occurrence Remarks: Laying right in the middle of the trail, may 16 inches long, with 1 rattle. Brilliant clear colorations on this snake. Very surprised at its relaxed behavior as I have heard the juveniles are the most aggressive when encountered. This snake slowly slithered away after many minutes of photographing and observing.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3881847333; Occurrence Remarks: On trail between wooded riparian area and grassy Baccharis scrub. Didnt make any sound.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3892410573; Occurrence Remarks: Beside road at night, desert shrubland.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3902553311; Occurrence Remarks: Besides trail after sunset, Artemisia, Adenostoma, Arctostaphylos, Quercus shrubland.;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.674522, -117.239504: : 3/27/2015: Cabrillo National Monument: 27 Mar 2015 :

San Diego, California: 32.669653, -116.821271: : 4/16/2026: bibmik: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 38.00000.

GBIFID: 4091476300; Occurrence Remarks: Hidden in grass. Photos 2-4 have some of the snake outlined.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4103158798; Occurrence Remarks: The rattlesnake was near the parking area. It was gently moved off the road.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4130092702; Occurrence Remarks: Two spotted within 10 feet of each other.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4130135705; Occurrence Remarks: Two spotted within 10 feet of each other.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4400063988; Occurrence Remarks: Crossed the road in front of us;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1132414051; Occurrence Remarks: On a vernal pool restoration site.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1132414014; Occurrence Remarks: In southern mixed chaparral, mafic soils.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4407501585; Occurrence Remarks: Two rattlesnakes mating.;; Coordinate Uncertainty in Meters: 427.00000.

GBIFID: 4413943546; Occurrence Remarks: Tail was up but never rattled.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4420806226; Occurrence Remarks: My dad caught this Rattle snake when it was near our house earlier this month;; Coordinate Uncertainty in Meters: 42.00000.

GBIFID: 4936479397; Occurrence Remarks: A young one, basking on the trail, with a Western Fence Lizard nearby.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4599912992; Occurrence Remarks: Sunning outside its hole;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 2234807392; Occurrence Remarks: This specimen was found on the Tecolote hiking trails. If I had to guess, I would say it was about 2-3 feet long. When I came across this snake I was walking along the trail and noticed about 15 feet away it had started to cross the trail. It must not have noticed me much because it did not let off any warning signs and continued to cross rather slowly. It was a darker brownish gray in color and itΓÇÖs rattler was a lighter tannish white. As can be seen in the picture it does have slight variation in color among its body. After comparing it to images I researched, I believe it may be a western rattlesnake but it was difficult to tell as I did not get close enough and had to zoom in on the pictures.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2236261669; Occurrence Remarks: Two snakes;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2236865557; Occurrence Remarks: Unfortunately they killed the snake before I could get there to save it !;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2236925279; Occurrence Remarks: Untitled;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 2238800083; Occurrence Remarks: Shooed this baby off a road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2238838584; Occurrence Remarks: We rescued this rattlesnake unhurt.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2238982289; Occurrence Remarks: Photo by Cabrillo vip Romi Adachi.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 5006722597; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2251859217; Occurrence Remarks: JAMUL, juvenil.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2251858497; Occurrence Remarks: JAMUL;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2251859902; Occurrence Remarks: i kill this one by accident at jamul.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5108151516; Occurrence Remarks: Unfortunately found to be recently killed. Perhaps by the Ravens that frequent the area.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 5167818289; Occurrence Remarks: Removed from residence and relocated to 32.7609021, -116.9072801;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 5167140880; Occurrence Remarks: Collected from residence at the owners request and moved back into local habitat. 9810 Eucalyptus St, Spring Valley, CA 91977;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 5188275216; Occurrence Remarks: Found dead near trailhead. Appears to have been run over. Not clear if accidentally or intentionally killed.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2294537631; Occurrence Remarks: Baby rattlesnake;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5206674252; Occurrence Remarks: San Diego National Wildlife Refuge;; Coordinate Uncertainty in Meters: 1498.00000.

GBIFID: 5238127519; Occurrence Remarks: hmmm I believe this could be a western rattlesnake but I donΓÇÖt really know. It didnΓÇÖt even strike honestly it was just passing it wasnΓÇÖt even curled and slithered away when we left. It mightΓÇÖve just ate as well. Sorry for blurry pics.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3070290759; Occurrence Remarks: Buzzed at us from over 20 meters away!!;; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.665792, -117.242632: : 5/18/2016: Cabrillo National Monument: 18 May 2016 :

GBIFID: 2422986594; Occurrence Remarks: Found in a building! A baby rattlesnake, captured and released outside.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 2423069713; Occurrence Remarks: Southern pacific rattle snake;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1269581140; Occurrence Remarks: 2016 PDT during Cabrillo National Monument Bioblitz. After hiking throughout the Monument and checking in with herp teams monitoring pitfall traps, this juvenile turned out to be the only rattlesnake sighted all day. It was discovered after dark on short flight of steps leading up from the parking lot.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2423205876; Occurrence Remarks: Absolute unit!;; Coordinate Uncertainty in Meters: 640.00000.

GBIFID: 1291134433; Occurrence Remarks: Juvenile spotted during monthly herpetofauna survey at Carrillo National Monument. Estimated length 12-15 inches.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2576293639; Occurrence Remarks: Photo taken by my dad.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2579311140; Occurrence Remarks: Juvenile Pacific Rattlesnake found under a rock. Slithered off into the grass shortly after;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2579221405; Occurrence Remarks: Juvenile. No rattle, just button. Had yellow coloring before button.;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2609295443; Occurrence Remarks: Dead in the road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2610998867; Occurrence Remarks: got it safely out of the road;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1453279182; Occurrence Remarks: DOR...possibly intentional;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.674458, -117.240426: : 8/28/2016: Cabrillo National Monument: 28 Aug 2016 :
GBIFID: 1453301628; Occurrence Remarks: thrasher tripped camera;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2802562227; Occurrence Remarks: Found because it was being tail-flagged by a ground squirrel.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 891036953; Occurrence Remarks: I believe this was the first rattlesnake I saw in the wild, too bad it was dead. Not sure what killed it, not a vehicle since it was no where close to a road.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 891036943; Occurrence Remarks: First the ruber then on way out to car we came across this juvenile So Pac in the middle of the road, I was able to get a few pics and move it to the side safely so it would not get hit. Technically my first rattlesnake catch even though I did not actually handle it.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826126042; Occurrence Remarks: It spent the night!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1455597022; Occurrence Remarks: Found coiling up but not making sound;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1457622443; Occurrence Remarks: I found this juvenile rattlesnake near a creek;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891073396; Occurrence Remarks: Super excited to see this rattler stretched across the trail yesterday. Stayed in this position for almost a minute, snapped a bunch of pictures, then it coiled up, spun around, and slithered off into the surrounding brush. Had a very soft sounding rattle as it retreated. In the picture, the rattle is somewhat obstructed by some grass but I can count 10 rattles.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1500308707; Occurrence Remarks: This snake appears to have felt threatened by the group because it was rattling its tail.;; Coordinate Uncertainty in Meters: 3391.00000.

GBIFID: 1500308755; Occurrence Remarks: This snake appears to have been sleeping in a circular position.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 899964169; Occurrence Remarks: I was hoping with the warm up that snakes might be moving but the only one we saw was this DOR juvenile rattler. We also saw a tree frog and toad but did not stop for pics.;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 2873828714; Occurrence Remarks: About 8 inches;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 1562970957; Occurrence Remarks: Dead on the road. Flattened head and neck. Young.;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 2901704269; Occurrence Remarks: San Miguel Ranch, San Diego County, CA;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3456132376; Occurrence Remarks: Cuyamaca College Tennis Court find!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 910499585; Occurrence Remarks: Saw a toad and was slowing down to turn around when I saw this live rattler in the road. Got out to take vouchers and show Falco then moved off road. Went back to see the toad but it was no where to bs found. At least the toad got me to slow down so I could see the snake. Not a bad night considering full moon and temps dropped quickly, 2 snakes and a toad.;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.672858, -117.2379: : 3/18/2026: tarotarotaro: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3079642399; Occurrence Remarks: This is a popular piece of junk for snakes to hang out under.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3090842150; Occurrence Remarks: About a 10 inches.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3090537252; Occurrence Remarks: Moved on my way back;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3112660718; Occurrence Remarks: My Girl saw this near her home. Shes lucky she got away alive.;; Coordinate Uncertainty in Meters: 50209.00000.

GBIFID: 891080860; Occurrence Remarks: Huge day today! This is the first of two rattlesnakes we found on our hike. We went out looking for snakes so it was a good thing, although somewhat startling still. Check out http://www.snakecount.org/ if you have a chance in the next couple of days! It started yesterday and will continue till the 20th. The first picture is of the ground squirrel hole the snake was on, right on the trail!!! If we were just out for a stroll we would have walked over it, I even dismissed the idea of a snake being in this hole because just a few moments earlier there were a couple squirrels scurrying about. My girlfriend caught the edge of this rattlesnake as she approached. Great eyes!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891080836; Occurrence Remarks: This is the second rattlesnake of the day, also within 1 foot of the trail we were hiking on. He was curled up under the rocks. The first picture is his head sticking out slightly. We got to see it slither up into the rock pile a few moments later, it was ~2-3 inches thick. It was probably around 80 degrees. Very exciting day! Dont think I will be taking a break on any trailside rocks in the near future.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1640116818; Occurrence Remarks: Juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3124704952; Occurrence Remarks: We were at the Tecolote Nature Reserve Park and as we were passing the entrance, there was a small rattlesnake right behind the entrance pillar! It was a smaller one and it wasnt rattling. It was likely to be sunbathing in the hot afternoon and took cover as soon as hikers passed by.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3301817181; Occurrence Remarks: Mother Miguel Mountain Trail, San Diego County, CA;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3307206040; Occurrence Remarks: Crossing trail at Sweetwater Preserve. Just shy of 3 feet long. Partly cloudy day in the 80ΓÇÖs F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3314606346; Occurrence Remarks: Sweetwater Reservoir, San Diego County, CA;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3327772148; Occurrence Remarks: Sweetwater Reservoir, San Diego County, CA;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3327877141; Occurrence Remarks: Very intensely colored...I kept in extra photos to show the green on the side.;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 3384059683; Occurrence Remarks: Was on the trail at dusk!;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 3384419793; Occurrence Remarks: Tried to eat a woodrat, but failed. Snake was about 50 to 55 cm in length.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3385204868; Occurrence Remarks: Large individual;; Coordinate Uncertainty in Meters: 6.00000.

San Diego, California: 32.733883, -116.275719: : 8/28/2025: Rachel S.: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.708763, -116.964455: : 7/7/2026: Lindsay Willrick: 7 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Diego, California: 32.745916, -116.799511: : 3/26/2026: mynat-3-: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Relocated from 9165 Camino Lago Vista Spring Valley Ca 91977; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3764381261; Occurrence Remarks: Crotalus oregamus helleri;; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: Occurrence Remarks: Snake moved from front yard to habitat behind the backyard fence; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.840214, -117.040021: : 8/4/2025: Sing to the Mountain Studio: 4 Aug 2025 :
Occurrence Remarks: Occurrence Remarks: Deceased; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Occurrence Remarks: Updated with a front facing photo; Coordinate Uncertainty in Meters: 17.00000.

San Diego, California: 32.918962, -117.256562: : 3/28/2026: Daniel Wiebe: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 20.00000.

San Diego, California: 32.897197, -117.207229: : 10/21/2025: Phillip Bartels: 21 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.832525, -117.072517: : 9/19/2025: Daniel Hetzel: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.830212, -117.069549: : 8/1/2025: Javier Garcia: 1 Aug 2025 ; Coordinate Uncertainty in Meters: 104.00000.

San Diego, California: 32.839622, -117.233537: : 8/9/2025: Siena Capaldo: 9 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Relocated from 1178 Erin Dr, El Cajon, CA 92020; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Relocated from 1940 Ventana Way, El Cajon, CA 92020; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 1901073246; Occurrence Remarks: Rattlesnake found in front yard under an oak. With the help of neighbors, it was captured & transported to near Tecolote Creek in Tecolote Canyon Natural Park.;; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.89903, -116.585485: : 9/5/2025: frankiecoburn: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4162291003; Occurrence Remarks: North trail of Grasslands Loop Trail, MTRP;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4116367464; Occurrence Remarks: This one did not rattle at me and I saw it from ~3 feet away.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4129964005; Occurrence Remarks: 3rd;; Coordinate Uncertainty in Meters: 1.11000.

San Diego, California: 32.881921, -116.866803: : 4/10/2026: spiral_coyote: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 86.00000.

San Diego, California: 32.845455, -117.199997: : 5/30/2026: andrea patricelli: 30 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: ≡ƒÆÇ; Coordinate Uncertainty in Meters: 53.00000.

San Diego, California: 32.902581, -117.226502: : 4/23/2026: Mike Nelson: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Photo sent to me by observer without an inat account; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.922185, -117.16025: : 11/5/2025: Tyoma: 5 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: This appears to be a snake that was recently run over, placed on a rock; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.867562, -116.46405: : 5/16/2026: Sumac: 16 May 2026 ; Coordinate Uncertainty in Meters: 31.00000.

San Diego, California: 32.847325, -117.032203: : 5/15/2026: radchap: 15 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Does snake fencing work ≡ƒñö; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 32.846841, -117.03444: : 5/26/2026: jayoloughlin91: 26 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 32.839829, -117.033564: : 5/28/2026: Jim Carretta: 28 May 2026 ; Coordinate Uncertainty in Meters: 193.00000.

San Diego, California: 32.811689, -116.552686: : 5/2/2026: california_every_reptile: 2 May 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.912088, -116.554487: : 5/2/2026: california_every_reptile: 2 May 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.840752, -117.215843: : 5/30/2026: Ezra Patricelli: 30 May 2026 ; Coordinate Uncertainty in Meters: 997.00000.

GBIFID: 4129992754; Occurrence Remarks: Cool dark pattern!!;; Coordinate Uncertainty in Meters: 200.00000.

San Diego, California: 32.815284, -117.02667: : 9/27/2025: ashletta320: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 97.00000.

GBIFID: 3705598297; Occurrence Remarks: Found dead Γÿ╣∩╕Å;; Coordinate Uncertainty in Meters: 24.00000.

San Diego, California: 32.822308, -116.623367: : 4/22/2025: evanjoe2000: 22 Apr 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.827039, -117.194361: : 6/12/2025: Peter Zoldan: 12 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Caught near neighbors fruit trees on the retaining wall. Released 100 yards away down a canyon.; Coordinate Uncertainty in Meters: 191.00000.

Occurrence Remarks: This gorgeous beast gave a timely warning while I was (slowly) whacking my way through dead mustard. In the words of the late Steve Irwin, ΓÇ£Crikey! What a beauty!ΓÇ¥ In my words, ΓÇ£JFC! ΓÇª. Sorry sir!ΓÇ¥; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 32.823775, -117.021989: : 2/17/2026: Crystal Ferreira: 17 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.855335, -116.993894: : 2/14/2026: Nathan: 14 Feb 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

Occurrence Remarks: Who would crush a rattlesnake under a board more than 20 ft off the trail behind and under a bush? Only herpers know about this board, what kind of a Herper would kill a rattlesnake?; Coordinate Uncertainty in Meters: 29039.00000.

Occurrence Remarks: Relocated from 9382 Palomino Ridge Dr, Lakeside, CA 92040 per the homeowners request; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.831395, -117.055519: : 2/23/2026: Daniel Katzive: 23 Feb 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 32.907628, -117.209367: : 2/24/2026: W. Larry Sward: 24 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.856615, -117.223885: : 2/24/2026: thejdj: 24 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.832278, -117.088888: : 2/26/2026: Phillip Bartels: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.876883, -117.248833: : 5/16/2025: seanified: 16 May 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: rattling from within the grass -- you can see its eyeball if you enlarge the photo; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.818258, -117.052256: : 3/1/2026: Dave Be: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.908592, -116.899422: : 3/2/2026: Jeff McLean: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.917208, -117.236472: : 3/2/2026: czeek: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 196.00000.

San Diego, California: 32.833162, -117.088225: : 2/28/2026: eljefe5566: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.876462, -117.276625: : 3/9/2026: Nathan: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.823383, -117.05448: : 3/24/2025: morgan: 24 Mar 2025 ; Coordinate Uncertainty in Meters: 13.00000.

San Diego, California: 32.840318, -117.036841: : 3/12/2026: Sing to the Mountain Studio: 12 Mar 2026 :
Occurrence Remarks: The specimen seemed to be struggling and disoriented on the hot pavement. A work crew assisted the snake off the pavement to the nearby vegetation.; Coordinate Uncertainty in Meters: 31.00000.

San Diego, California: 32.888998, -117.252029: : 3/13/2026: sashagiuntoli: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.804947, -117.193078: : 3/4/2026: Craig Denson: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Basking in the sun in the middle of the road; Coordinate Uncertainty in Meters: 231.00000.

San Diego, California: 32.8606, -116.892263: : 3/15/2026: little_foot1301: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 184.00000.

San Diego, California: 32.814102, -117.020001: : 3/15/2026: ashletta320: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 43.00000.

San Diego, California: 32.788475, -116.6613: : 4/14/2026: potterymonk: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Occurrence Remarks: Saw in courtyard sunning itself, about 3 feet in length.; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 32.875613, -116.997337: : 5/8/2026: Justyn Stahl: 8 May 2026 ; Coordinate Uncertainty in Meters: 21.00000.

San Diego, California: 32.818075, -117.051465: : 5/9/2026: this_scientician: 9 May 2026 ; Coordinate Uncertainty in Meters: 52.00000.

San Diego, California: 32.887138, -116.981072: : 5/9/2026: Paul Hartwell: 9 May 2026 ; Coordinate Uncertainty in Meters: 16.00000.

San Diego, California: 32.788687, -117.036903: : 5/10/2026: saureal: 10 May 2026 ; Coordinate Uncertainty in Meters: 58.00000.

San Diego, California: 32.842434, -117.037471: : 5/10/2026: Sing to the Mountain Studio: 10 May 2026 :
Occurrence Remarks: Camera - Canon R6 MKII Lens - Canon RF 70-200mm f/2.8 L IS USM; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.804428, -117.12683: : 5/10/2026: raderj: 10 May 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.827881, -117.104733: : 5/11/2026: Dave Be: 11 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.798672, -116.803097: : 1/17/2026: regryugitating: 17 Jan 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.783928, -117.084694: : 2/3/2026: drobx: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.810808, -117.009531: : 2/7/2026: lafiametta: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.839317, -117.056083: : 2/6/2026: Rosalind Morehead: 6 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.8217, -117.054974: : 4/25/2026: Evan Yoon: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

San Diego, California: 32.843868, -117.2116: : 4/27/2026: jim_roberts: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.845438, -117.048989: : 5/10/2025: Connor Gross: 10 May 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.916867, -116.964862: : 5/26/2025: grrrlm0ld: 26 May 2025 ; Coordinate Uncertainty in Meters: 29039.00000.

Occurrence Remarks: Snake was rattling.; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.825072, -117.091176: : 9/17/2025: rctyson: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 5235.00000.

San Diego, California: 32.828205, -116.813545: : 9/26/2025: cxvoight: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 5000.00000.

San Diego, California: 32.840709, -117.031482: : 9/28/2025: Stacey Miller: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.844983, -116.418687: : 5/11/2026: dennisjfinger: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.8359, -117.064647: : 3/16/2026: rwhaley: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 11.10000.

Occurrence Remarks: Mission trails; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.874583, -116.445342: : 3/16/2026: Jeff McLean: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.875242, -116.446258: : 3/16/2026: Jeff McLean: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 32.876501, -116.506735: : 3/18/2026: Neal Kelso: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.865371, -116.466157: : 3/21/2026: pleiotrope: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 47.00000.

San Diego, California: 32.809458, -116.527887: : 3/21/2026: pavelbykau: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Found alive, but injured on Thu, Mar 19. Run over by large flatbed truck on the paved road through MTRP. https://www.inaturalist.org/observations/344336279 Color looks similar to one two rattlesnakes found entwined nearby on Mar 17 https://www.inaturalist.org/observations/344337919; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Still alive after being run over by this large flatbed trailer on the paved road through MTRP. Observation of same snake dead on Sat, Mar 21- https://www.inaturalist.org/observations/344334882 Color looks similar to one of two rattlesnakes found entwined nearby on Tue, Mar 17 https://www.inaturalist.org/observations/344337919; Coordinate Uncertainty in Meters: 28.00000.

Occurrence Remarks: Second photo from later in the week to better show their location & scale.; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.791525, -117.187649: : 3/22/2026: sbriest: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.823167, -116.857413: : 3/22/2026: Passigi: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 32.8238, -117.054542: : 3/23/2026: tonorris: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.823917, -117.054675: : 3/22/2026: Simon Meth: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.840346, -117.032844: : 3/24/2026: Christine Beck: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Occurrence Remarks: Better photos of this snake 5 days after it was crushed or caught between the wheels of a water project flatbed truck in MTRP. Different positioning than before. No scavenging except the rattle that was visible on the other side of the tire is now gone. https://www.inaturalist.org/observations/344334882 Possibly one of these two snakes seen close by on 3/16- https://www.inaturalist.org/observations/344337919; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Relocated from: 9382 Palomino Ridge Dr, Lakeside, CA 92040 To El Monte Valley into the conserved and restored habitat around the pond. With permission from EDI personnel. 64┬░F 8:45am call received The Coastal Marine layer had just burned off; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.918522, -117.100983: : 3/25/2026: Shawn Gallagher: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Relocated from: 4874 renovo way. San Diego 92124 Found coiled in the shade at 8:30 a.m. Juvenile YOLY; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.908214, -116.489424: : 3/31/2026: Linda Pardy: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 32.876558, -117.157278: : 3/31/2026: Daniel Donovan: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.825275, -116.765412: : 3/31/2026: debsak: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Relocated from 9230 Lasso Way, Santee CA 92071 Found at 7:00pm; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Juvenile snake; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: A scary but awesome black rattle snake in the bushes; Coordinate Uncertainty in Meters: 201.00000.

San Diego, California: 32.839078, -117.044494: : 4/1/2026: andriajane: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.840533, -117.070442: : 4/4/2026: Sarah Tribelhorn: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.818097, -116.493053: : 4/8/2026: aromazhaon: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.835972, -117.055314: : 4/1/2026: Owlgirl3: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 32.916276, -117.107095: : 10/1/2025: raderj: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.869558, -116.893956: : 10/2/2025: treepuddlelover23: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 48.00000.

Occurrence Remarks: Found hibernating in a trash heap at: 9382 palomino ridge dr. Lakeside Relocated to the preserved area in El Monte valley; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.814078, -117.026912: : 6/28/2025: ashletta320: 28 Jun 2025 ; Coordinate Uncertainty in Meters: 74.00000.

San Diego, California: 32.810634, -117.021295: : 6/1/2025: ashletta320: 1 Jun 2025 ; Coordinate Uncertainty in Meters: 53.00000.

San Diego, California: 32.811117, -117.02162: : 6/22/2025: ashletta320: 22 Jun 2025 ; Coordinate Uncertainty in Meters: 38.00000.

San Diego, California: 32.875494, -117.245979: : 6/5/2026: Clarissa Rodriguez: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 96.00000.

San Diego, California: 32.913667, -117.245781: : 6/4/2026: JP Duvinage: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Just west of Old Mission Dam in MTRP. Video here- https://youtube.com/shorts/hBv3-vIILNA?feature=shared

San Diego, California: 32.883358, -117.080062: : 3/31/2026: Rachel Allingham: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Unknown, California: 32.850792, -117.373736: : 7/9/2026: czeek: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.920558, -117.067425: : 6/25/2026: Chalon Boesel: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.909305, -117.233878: : 6/27/2026: Rachel Lee Harper: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.862699, -116.99166: : 3/9/2025: jrussert: 9 Mar 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.828324, -116.813625: : 10/10/2025: cxvoight: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 259.00000.

San Diego, California: 32.878811, -117.247945: : 10/25/2025: andrea patricelli: 25 Oct 2025 ; Coordinate Uncertainty in Meters: 349.00000.

San Diego, California: 32.819382, -117.055933: : 4/1/2026: dbshark: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3455544851; Occurrence Remarks: Gen Bio 100;; Coordinate Uncertainty in Meters: 581.00000.

GBIFID: 3466067912; Occurrence Remarks: Baby;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 3705407514; Occurrence Remarks: Spent 30+ minutes trying to chow down on a rabbit. Eventually gave up and slithered away.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3070618445; Occurrence Remarks: There was a pair of helleri under and next to this concrete slab;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 3070520419; Occurrence Remarks: My buddy almost stepped on this guy. He was super chill though, and never struck. We took some pictures and let him go back into the rocks.;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 1838318254; Occurrence Remarks: Seen in tecolote canyon;; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.840866, -117.044042: : 4/6/2022: Sing to the Mountain Studio: 6 Apr 2022 :

San Diego, California: 32.840338, -117.037178: : 4/18/2018: Theresa Sinicrope Talley: 18 Apr 2018 :

GBIFID: 3764246026; Occurrence Remarks: Young rattlesnake coiled in a hole. Black/brown pattern throughout body and head.;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 1839252499; Occurrence Remarks: Seen about 3 up in a bush being scolded by a Wrentit. Did not move during observation. Bird nest was not seen. Head not seen. Thick-bodied. Brad, what think you?;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1841209596; Occurrence Remarks: Dead rattlesnake tail;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3773601489; Occurrence Remarks: Or Western Rattlesnake?;; Coordinate Uncertainty in Meters: 357.00000.

GBIFID: 891094978; Occurrence Remarks: Southern Pacific Rattlesnake on trail at Torrey Pine park at La Jolla, San Diego;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3784640755; Occurrence Remarks: Photo courtesy of K. Lewis;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891095744; Occurrence Remarks: Juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847442274; Occurrence Remarks: Eating a beautiful Great Basin Fence Lizard;; Coordinate Uncertainty in Meters: 2000.00000.

GBIFID: 1847444736; Occurrence Remarks: Run over by vehicle on McCain Valley Road maybe the day before. Turkey vulture overhead assessing the meal.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3860493244; Occurrence Remarks: Bulge indicates recent meal.;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 3859867099; Occurrence Remarks: Approx. 1 meter long. Crossing Kitchen Creek Road (North).;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 3079575306; Occurrence Remarks: 2:15 PM.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3873721965; Occurrence Remarks: Slightly greenish underbelly, a bit small in size;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 3873101827; Occurrence Remarks: Snake was dead alongside Margerum Ave in the area of Rancho Mission Canyon;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3873075091; Occurrence Remarks: This one had a lot of pink - pretty.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 3079737307; Occurrence Remarks: 2:46 PM;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1848803272; Occurrence Remarks: Adult, 3.5 feet long;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 1848810354; Occurrence Remarks: Had 7 rattles, but the tip of its rattles had been broken off.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1850980903; Occurrence Remarks: Found dead.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 3947207322; Occurrence Remarks: I spent about 15 minutes on this observation since it was slowly crossing a trail frequented by bikes and hikes. No one passed by during that time.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3947796716; Occurrence Remarks: Front porch.;; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 4028960175; Occurrence Remarks: We flipped this mom and baby on a cool rainy day 1/29/2023. Baby looked to be a neonate. Photo by: D. Newman;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 4067459613; Occurrence Remarks: This appears to be a rattlesnake but interestingly, it is missing its rattle. Found in Tecolote Canyon Natural Park.;; Coordinate Uncertainty in Meters: 977.00000.

GBIFID: 4075980595; Occurrence Remarks: We found the snake in the middle of the road and feared it would be killed, so we carefully moved it to the side. Unfortunately, as a result, it coughed up the gopher it had consumed. We left the gopher with the snake, hoping it might try to re-consume it later.;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.838809, -117.045201: : 4/9/2023: Sing to the Mountain Studio: 9 Apr 2023 :

GBIFID: 4935696923; Occurrence Remarks: Warned me loudly before I saw it! On service road above I-5 north of Soledad Mountain.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4102613811; Occurrence Remarks: Two rattlesnakes with their bodies upright and twined/twining together. (On Mission Gorge Rd at the edge of a disturbed field.);; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4103294319; Occurrence Remarks: This one was inadvertently injured by a weed trimmer;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4116558589; Occurrence Remarks: I added another photo of its tail on 5/18/2023.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1913175091; Occurrence Remarks: Adjacent to dry south bank of San Diego River bed in Mission Trails Regional Park across from quarry. Encountered at night while checking acoustic recording equipment for bat calls. Remained stationary in leaf litter as I approached it while bushwhacking to the recording site. No sounds made before, during, or after this photo. Second photo shows vegetation context the next morning.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4130019851; Occurrence Remarks: 1st;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 4130125984; Occurrence Remarks: 2nd;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4133721146; Occurrence Remarks: Mission Trails Regional Park Visitor Center Loop Trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4134061750; Occurrence Remarks: not 100% sure, wasnΓÇÖt brave enough to get a closer picture;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 1914217828; Occurrence Remarks: Juvenile rattlesnake, approximately 12ΓÇ¥ long, and 3/4ΓÇ¥ wide at midsection;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 1914222337; Occurrence Remarks: This is the second baby Southern Pacific rattlesnake I have seen in two days (two different East San Diego County locations: Santee and Tierrasanta). This one appears slightly smaller and thinner than the one I had observed in Santee, CA yesterday.;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 4145341834; Occurrence Remarks: Young ~1 foot long, scurried off trail and under rock;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 4165796253; Occurrence Remarks: It was on the trail & I came within a few feet of it before I saw it. Luckily it slithered away quickly.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4171935285; Occurrence Remarks: Magnificent! Sprawled across trail catching some rays.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4417192439; Occurrence Remarks: This rattlesnake was seen in tierrasanta. It was just sitting there for awhile and then it slithered away.;; Coordinate Uncertainty in Meters: 364.00000.

GBIFID: 4431053134; Occurrence Remarks: Walked right by without seeing it until the last second and it did not rattle. It was oddly ΓÇ£frozenΓÇ¥ in place. Watched it for 2 minutes and it didnΓÇÖt rattle, twitch or move 1 mm. Never seen that behavior before.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4440681925; Occurrence Remarks: Young one!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4465465585; Occurrence Remarks: Baby, found dead.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4507920471; Occurrence Remarks: United States, California, San Diego;; Coordinate Uncertainty in Meters: 707.00000.

San Diego, California: 32.782404, -117.18554: : 10/1/2014: Chia aka Cory Chiappone: 1 Oct 2014 :

GBIFID: 4597544177; Occurrence Remarks: No rattling observed. Shaded area beneath Salix.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4597184432; Occurrence Remarks: Artemisia californica scrub;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4599920754; Occurrence Remarks: Head immobilized, probably hit by a car;; Coordinate Uncertainty in Meters: 43.00000.

GBIFID: 4606660175; Occurrence Remarks: Dead;; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.903247, -117.23693: : 4/18/2024: Ryan Huffman Sjana Carter: 18 Apr 2024 :

GBIFID: 891128611; Occurrence Remarks: Either Crotalus oreganus or Crotalus oreganus helleri This +/- 4 ft. rattlesnake was sunning itself in the middle of the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2012981299; Occurrence Remarks: Not sure what kind of snake this one is.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4852187121; Occurrence Remarks: A juvenile with just a bud on its tail was moving around then went under this adult.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4853187680; Occurrence Remarks: I think this was a baby rattlesnake. I uncovered it while weeding a habitat restoration project. The snake did not rattle, but stuck its tongue out at me.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1144285355; Occurrence Remarks: 3ft cutie;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4852580485; Occurrence Remarks: At the upper end of the park;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4854847699; Occurrence Remarks: Baby snake;; Coordinate Uncertainty in Meters: 251.00000.

GBIFID: 4855055503; Occurrence Remarks: Hissing snake (~20 Inches long). Posterior half on edge of narrow trail. Anterior half in the grasses.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 4855268364; Occurrence Remarks: My friend called me to relocate a rattlesnake from his yard.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4867697739; Occurrence Remarks: Found whole weeding a habitat restoration site. Snake barely moved, no rattling. Cloudy day, temp ~62F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4867939446; Occurrence Remarks: - Rattle on tail was long, seemed fully mature (in my inexpert opinion). - Saw two in the area, the other was at a bad angle and couldnt be photographed. Both seemed to be the same species. - Apologies for the bad photo quality. Pictures were taken on my phone.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2236217102; Occurrence Remarks: Found dead in street by Paul Leatherman. It appeared to have been run over by a vehicle. Total length = 31 inches = 79 cm.;; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 32.899978, -116.565393: : 6/4/2024: Alexander Gregory Mason: 4 Jun 2024 :

GBIFID: 4892001969; Occurrence Remarks: Warm day about 70. Overcast and slightly windy. Snake was very calm. No rattling. Right off the main path. Seems to be in ambush mode.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4891892545; Occurrence Remarks: Hello little one. Smallish - maybe a little over a foot? I accidentally startled it and it got stressed out, rattled, and ran into the bushes. Sorry little dude!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2236863415; Occurrence Remarks: Found dead on hiking trail/dirt road. Only park rangers & utility workers drive vehicles on this road.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2236867356; Occurrence Remarks: MTRP 2012;; Coordinate Uncertainty in Meters: 68.00000.

GBIFID: 2236865867; Occurrence Remarks: San Diego County, California, US;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 891135494; Occurrence Remarks: San Diego County, California, US;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3307387321; Occurrence Remarks: Southern Pacific rattlesnake on East Mesa Fire Road.;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.886292, -117.230147: : 6/9/2024: Brandi Rene Sanchez RandomBirdLover: 9 Jun 2024 :

GBIFID: 2238920017; Occurrence Remarks: Rattlesnake about 3ft in length.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936261197; Occurrence Remarks: This juvenile played dead for several minutes before heading off the trail into the bushes.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2239011590; Occurrence Remarks: Found dead. Possibly killed a few days earlier when the area was probably mowed with a weed whacker.;; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 32.87463, -117.245987: : 9/7/2024: Brandi Rene Sanchez RandomBirdLover: 7 Sep 2024 :

GBIFID: 1227746343; Occurrence Remarks: 2 males in combat for a nearby female Photos taken by Dale Stiver;; Coordinate Uncertainty in Meters: 187.00000.

GBIFID: 2242881102; Occurrence Remarks: Small adult Southern Pacific along trail through Suycott Valley in Mission Trail Regional Park. It was crossing the trail when I happened by. It withdrew and only occasionally rattled while I watched. When a woman hiker approached with her dog I asked her to wait while I encouraged it to move back using my trekking piles. This is as far as it wanted to move before we departed.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4987518322; Occurrence Remarks: The snake was approximately one foot long and showed evidence of a recent meal, as indicated by the large bulge along its body. @markkjames stepped within a foot of the snake before I noticed it start to slither!! Same individual: https://www.inaturalist.org/observations/252958929;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 2244289937; Occurrence Remarks: When discovered, the rattlesnake was eating a fence lizard. The dead lizard was released when the snake was captured. The snake was removed from a residential neighborhood & relocated to an open space park. The 5th photo show the rattlesnake after release.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 2244328632; Occurrence Remarks: Rattlesnake in middle of Los Penesquitos trail;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 5064103427; Occurrence Remarks: Juvenile, approximately 9ΓÇ¥ long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5077196686; Occurrence Remarks: Juvenile in backyard. Late afternoon, sluggish, on concrete patio. Relocated safely to canyon.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 5087260142; Occurrence Remarks: First snake sighting this year. This one was on the move!;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2265830697; Occurrence Remarks: Another Southern Pacific, they are everywhere. I ΓÇ£ observeΓÇ¥ this specimen as it is so small; not 18ΓÇ¥ and very thin. Notice itΓÇÖs size by scale to nearby black mustard. The head was perhaps a half-inch.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5133212719; Occurrence Remarks: Relocated from a residence at 32.8084847, -116.9887938;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 5133200812; Occurrence Remarks: Moved about 100 yards away from the residence where it was captured (4869 Seda Dr, San Diego, CA 92124);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5140010263; Occurrence Remarks: Road kill;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 1253315006; Occurrence Remarks: Sorry for the terrible photos;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 5140332037; Occurrence Remarks: found dead;; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.839347, -117.042633: : 5/1/2025: Sing to the Mountain Studio: 1 May 2025 :

GBIFID: 5153356574; Occurrence Remarks: Same snake as https://www.inaturalist.org/observations/274272144;; Coordinate Uncertainty in Meters: 42.00000.

GBIFID: 2283134496; Occurrence Remarks: In the Scripps Coastal Reserve at sunset.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5168038143; Occurrence Remarks: Collected from 7110 Hillsboro Street San Diego, CA 92120 and relocated away from residence;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5167692419; Occurrence Remarks: Rattlesnake removal, requested the snake be taken far away from residence: 9231 Lasso Way, Santee, CA 92071;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 5167771763; Occurrence Remarks: Collected from a neighbor in the area who requested that it be relocated away from the house. 4874 Renovo Way;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5167036054; Occurrence Remarks: Rattlesnake relocation request from 9231 Lasso way Santee CA. 92071;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168386311; Occurrence Remarks: Rattlesnake relocation requested by owner. Time of capture: 12:23pm, temp:72┬░F relocated from: 10173 Halberns Blvd, Santee, CA 92071;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5177088363; Occurrence Remarks: Relocation from 5181 Espinoza Rd in El Cajon;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.801572, -117.05143: : 5/31/2025: Danielle Letourneau Jones: 31 May 2025 :

GBIFID: 2283267473; Occurrence Remarks: Thinking either Red Diamond or Southern Pacific Rattlesnake...snake stayed coiled and didnt rattle even though less than 6 feet away.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5176586229; Occurrence Remarks: :);; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5198680851; Occurrence Remarks: Translocated from a local residence;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 5199282542; Occurrence Remarks: Relocated from 9382 Palamino ridge dr. 84┬░F when picked up at 10:30am Found at 9:50am;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5206688369; Occurrence Remarks: On both photos is the same specimen that was observed on Big Laguna Trail.;; Coordinate Uncertainty in Meters: 220.00000.

GBIFID: 5206260428; Occurrence Remarks: All 3 photos are of the same juvenile specimen observed on Big Laguna Trail.;; Coordinate Uncertainty in Meters: 220.00000.

GBIFID: 2350434825; Occurrence Remarks: The snake was found dead at edge of Snead Ave., which is a short road (1/4 mile) that goes only to the Tecolote Golf Course. It is not obvious whether this snake was killed by a vehicle or a malicious person, but I have found several dead gopher snakes on this road in the past.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2422930200; Occurrence Remarks: ≡ƒæ╢;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1273856851; Occurrence Remarks: Torrey Pines Rattle snake eating a mouse;; Coordinate Uncertainty in Meters: 1069.00000.

GBIFID: 2456542083; Occurrence Remarks: Baby on the trail.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1291134938; Occurrence Remarks: Found in disturbed area adjacent to Mission Trails Regional Park and the San Diego River.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 1291135248; Occurrence Remarks: Observed off the Big Rock trail on Cowles Mtn It was about 18 long inches with a button on its tail.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2557772973; Occurrence Remarks: A small rattlesnake, roughly 37 cm long. Head in the grass, tail sticking out on the trail. On the side of a trail in Tecolote Canyon Natural Park. Late afternoon, about 45 minutes before sunset. Temperature around 20C.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 1291152910; Occurrence Remarks: In riparian area about 1 meter from Tecolote Creek.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2573897957; Occurrence Remarks: Juvenile. Found near the Town View trailhead to the Rancho Mission Canyon trail.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1306587108; Occurrence Remarks: In Tecolote Canyon Natural Park on trail.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 2596246629; Occurrence Remarks: Looks like head has damage;; Coordinate Uncertainty in Meters: 88.00000.

GBIFID: 1315072630; Occurrence Remarks: Far larger in length & diameter than Southern Pacific Rattlesnake seen nearby on 2016-09-05. Crawled off trail & into bushes before I could get good photos.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1323001123; Occurrence Remarks: About a foot long; found dead on the side of a paved road just after dark. It had been run over by a car. Edit- it was run over by a bike.;; Coordinate Uncertainty in Meters: 516.00000.

San Diego, California: 32.816772, -116.76583: : 4/6/2026: debsak: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5062503686; Occurrence Remarks: barely managed to catch in photo but in the center you can see the rattle;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 5062461654; Occurrence Remarks: 2 rattlesnakes in <10 minutes...;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 2611373634; Occurrence Remarks: An up close portrait of a juvenile.;; Coordinate Uncertainty in Meters: 822.00000.

GBIFID: 2626388486; Occurrence Remarks: Baby;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 1453231000; Occurrence Remarks: Baby rattlesnake. Enhanced the pic a little because it was hard to see;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2634427788; Occurrence Remarks: Very cool to see this species at high elevation in pine forest, this was a large and defensive individual, I heard it rattling before I saw it moving;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 2641486784; Occurrence Remarks: Juvenile snake found in my backyard. Its in a 3 to 4 inch diameter coil. I cannot see its head or tail. My tentative identification is a San Diego gopher snake (Pituophis catenifer annectens). It has dark brown main markings surrounding by yellow. But it could be a rattlesnake. Can anyone provide a definite identification from the pattern?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2814175952; Occurrence Remarks: Snake was in front yard of home on Red River Drive. Was able to get one photo.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 891038829; Occurrence Remarks: I wasnt ready to give up finding at least one more snake so I kept going flipping rocks and one of the last rocks before I had to leave produced a nice juvenile SoPac. Not a bad day considered so dry, 3 different snakes, skinks, fence lizards, side blotch, and other non herps.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891040353; Occurrence Remarks: Im pretty sure this is the same juvenile from a few days ago under same rock, but still recording it separately in case it is different.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891040421; Occurrence Remarks: Here is rattler #2, you can see the drastic different coloration between the 2, not sure if this is a male and female cohabitating.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891040366; Occurrence Remarks: I was about to give up on finding any more herps when I came upon this rattler out in open. Took pics then saw another one in a hole/den nearby. Took pics and then tapped it with stick and it crawled out next to first one so I got pics of both together. I knew there were rattlers there but did not expect to find any in open since temp was low 60s and cloudy, so I was surprised but excited.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1455596978; Occurrence Remarks: Snake was consuming a large rat.;; Coordinate Uncertainty in Meters: 56.00000.

GBIFID: 1457622566; Occurrence Remarks: Baby ~12-14;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2868371837; Occurrence Remarks: This snake was trying to get away from my dog and I quickly!;; Coordinate Uncertainty in Meters: 3160.00000.

GBIFID: 2883127818; Occurrence Remarks: The snake was dead in the Parking Lot by the Visitor Center.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5167858343; Occurrence Remarks: Found at mission trails park just before sunset. Very small friend;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1562922779; Occurrence Remarks: San Diego County, California, US I was surprised to see this young rattler on the road (and alive) with the outside temperature only at 59 degrees. Not only had it probably come from the park, but had traveled a short distance from the park in into the neighborhood on such a cool evening. The little critter was less than two feet in length so Im guessing it was born last year.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1562964820; Occurrence Remarks: Juvenile, about 15 inches in length;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.883858, -116.450272: : 5/27/2017: Larry Hendrickson, California State Parks: 27 May 2017 :
GBIFID: 1571108805; Occurrence Remarks: Laguna Mountains Recreation Area, Cleveland Natl Forest. connector trail SE of Little Laguna Lake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571112000; Occurrence Remarks: Estimated total length = 1.2 meters. 10 rattles in photo, but clearly some have been broken off.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1571112464; Occurrence Remarks: Next to MTRP visitor center A/C area;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571159863; Occurrence Remarks: Almost stepped on him;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3039193037; Occurrence Remarks: This Western Rattlesnake was spotted by my dad in the trail by my house. It was said to be quiet as it was passed by. The color of its scales help it to be identified as the Western Rattle snake, and rattle snake viewings are not uncommon in my area.;; Coordinate Uncertainty in Meters: 2694.00000.

GBIFID: 3044587197; Occurrence Remarks: Found by Bobbie Lee and family;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1572378478; Occurrence Remarks: At 5:50AM, cool out, snake off to side of trail, not moving at all. Note the dark color compared to other rattlesnake in accompanying photo;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 1572378447; Occurrence Remarks: Compared to other photo, why is this snake so blue in color? It was 5:50AM, and probably a bit more blue than normal due to camera; but to the eyes, it definitely had a blue hue! It was 20 feet from the other snake in other photo;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 3058940190; Occurrence Remarks: I almost ran it over on my bike;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 3068065767; Occurrence Remarks: Seen just off trail charging its battery;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 3070441579; Occurrence Remarks: Just a baby! I also saw a very dark adult approx 3ΓÇÖ long (6-8 rattles) cross the trail further along.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3079775902; Occurrence Remarks: It was 63 degrees F outside. Found crossing a hiking/ walking trail.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3079775915; Occurrence Remarks: Looks like someone smashed its head to kill it :(;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3090901613; Occurrence Remarks: In Navajo Canyon;; Coordinate Uncertainty in Meters: 186.00000.

GBIFID: 3112657118; Occurrence Remarks: A little over 1m length.;; Coordinate Uncertainty in Meters: 410.00000.

GBIFID: 3112866865; Occurrence Remarks: Dead, stuck in chicken wire :(;; Coordinate Uncertainty in Meters: 24.00000.

San Diego, California: 32.801517, -117.051477: : 5/9/2021: Danielle Letourneau Jones: 9 May 2021 :

GBIFID: 3302364475; Occurrence Remarks: Seen within Rose Canyon;; Coordinate Uncertainty in Meters: 198.00000.

GBIFID: 3302320185; Occurrence Remarks: Was living in my chicken coop. Humanely removed and relocated.;; Coordinate Uncertainty in Meters: 544.00000.

GBIFID: 1668882480; Occurrence Remarks: Captured in yellow trash can from neighbors backyard and released near creek in Tecolote Canyon Natural Park. Estimated length = 30 to 35 cm. Note button at tip of tail.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3302470643; Occurrence Remarks: Second picture for size, juvenile;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1668891887; Occurrence Remarks: Juvenile, relocated to another area nearby;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3325761402; Occurrence Remarks: Released back into the canyon where it belongs!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3705415415; Occurrence Remarks: Rattler;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3384472466; Occurrence Remarks: Just a baby! Resting on trail near sunset. Ground not warm on trail anymore so I encouraged it off to the side of the west-facing slope that was still warm. It crawled into a nice warm gopher hole and curled up at the entrance.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1807322012; Occurrence Remarks: Baby. Taken with a generous amount of zoom!;; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.839815, -117.033101: : 10/29/2021: Sing to the Mountain Studio: 29 Oct 2021 :

San Diego, California: 32.790949, -117.182974: : 3/12/2026: Anna Arft: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: Struck by car, pulled it out of the road while it was still alive but itΓÇÖs days are numbered ≡ƒñªΓÇìΓÖé∩╕Å pay attention to the road people!; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 32.787838, -117.036561: : 8/22/2025: Rachel Lee Harper: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 32.861921, -116.892282: : 3/14/2026: Connor Sadler: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 91.00000.

San Diego, California: 32.838009, -117.03598: : 7/5/2026: Karen Harnish: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 213.00000.

Occurrence Remarks: Is this a Western Diamondback Rattlesnake or a Southern Pacific Rattlesnake, or neither?; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: ID by Bruce Betz; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.779206, -117.182314: : 3/23/2026: Ben Martin Mortimer: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.825888, -117.065572: : 7/8/2026: squimbus: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 99.00000.

San Diego, California: 32.82453, -117.053183: : 3/21/2026: ale_jandrx: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 45.00000.

San Diego, California: 32.810787, -117.020386: : 8/17/2025: ashletta320: 17 Aug 2025 ; Coordinate Uncertainty in Meters: 30.00000.

San Diego, California: 32.857476, -117.217161: : 9/11/2025: jim_roberts: 11 Sep 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Occurrence Remarks: Relocated from: 10051 Dunbar Ln, El Cajon, CA 92021

San Diego, California: 32.917503, -117.165711: : 9/20/2025: beckyirene: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.912638, -117.245986: : 7/12/2026: BJ Smit: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 68.00000.

San Diego, California: 32.966233, -116.966195: : 4/23/2026: Katherine Hadary: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3858820901; Occurrence Remarks: Just like a snake in the grass, this 3 footer was very chilled out and just hanging out on the path.;; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Occurrence Remarks: Missing its rattles. Looks like they were bitten off.; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: Occurrence Remarks: stretched out across trail. As I got closer it slithered off into the grass, made no rattleing noise. Similar is size and color to one we had observed back on July 8, on same trail section.; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.011227, -117.189224: : 10/24/2025: jjones320: 24 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.996911, -116.870017: : 10/26/2025: kevindick: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 1691.00000.

San Diego, California: 33.112942, -116.669312: : 10/13/2025: Alexandra Barone: 13 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.005992, -117.263703: : 8/18/2025: steffani: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 33.254547, -117.083626: : 11/26/2025: rsmb: 26 Nov 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.032592, -117.093925: : 11/27/2025: Craig Chaddock: 27 Nov 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.023257, -117.333574: : 7/24/2026: David Newman: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.955333, -116.594017: : 7/25/2026: Erik Dunham: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.137092, -117.303818: : 4/2/2026: David Newman: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.005016, -117.152736: : 4/22/2024: Sara Allen: 22 Apr 2024 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.084357, -117.1999: : 4/8/2024: Curtis: 8 Apr 2024 ; Coordinate Uncertainty in Meters: 94.00000.

San Diego, California: 33.076317, -117.157919: : 4/30/2024: Curtis: 30 Apr 2024 ; Coordinate Uncertainty in Meters: 136.00000.

Occurrence Remarks: Sorry for bad picture, trying to respect its space!! On Stonewall Peak Trail, just a lil fella, about a foot long.; Coordinate Uncertainty in Meters: 288.00000.

San Diego, California: 33.162186, -117.051662: : 12/18/2025: Gerg: 18 Dec 2025 ; Coordinate Uncertainty in Meters: 62.00000.

GBIFID: 3760023176; Occurrence Remarks: juicy fella;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4138610135; Occurrence Remarks: out in the open on trail around 10 a.m.;; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.976143, -117.14605: : 3/14/2024: Vadim Belov: 14 Mar 2024 ; Coordinate Uncertainty in Meters: 5624.00000.

San Diego, California: 33.067119, -117.155342: : 8/13/2025: Anna Arft: 13 Aug 2025 ; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 32.973465, -116.90395: : 4/6/2022: Chloe and Trevor Van Loon: 6 Apr 2022 :

San Diego, California: 33.112847, -116.67022: : 4/13/2026: Alex Barone: 13 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

San Diego, California: 32.97213, -117.119475: : 4/18/2026: heatherb1225: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Occurrence Remarks: Juvenile; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 33.075975, -117.278857: : 4/21/2026: David Newman: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.112708, -116.669962: : 4/20/2026: Alex Barone: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 18.00000.

San Diego, California: 33.073966, -116.587075: : 4/18/2026: alyxjim: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 2215.00000.

San Diego, California: 32.97753, -116.964713: : 4/21/2026: drobx: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.098733, -117.130225: : 4/25/2026: steffani: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.075776, -117.159515: : 4/25/2026: Johnathan Hamann: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 81.00000.

San Diego, California: 32.924858, -117.258399: : 11/1/2025: Winsten Slowswakey: 1 Nov 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.946435, -117.036711: : 10/31/2025: barbaradie: 31 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.168591, -117.299509: : 11/9/2025: David Newman: 9 Nov 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.112075, -116.669617: : 5/20/2026: Alex Barone: 20 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.934158, -117.177763: : 3/12/2026: Reece Garren: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.953127, -117.254855: : 5/24/2026: askeena: 24 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 32.958722, -117.254088: : 5/24/2026: nathantay: 24 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.006506, -117.006576: : 5/30/2026: dianimal: 30 May 2026 ; Coordinate Uncertainty in Meters: 185.00000.

Occurrence Remarks: Ignore blurry photo, the snake decided I was close enough and let me know so a bit of a jump. Also ignore the road runner in the second photo the snake is on the ground behind it; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 33.187661, -117.048182: : 5/31/2026: Tyler Skotch: 31 May 2026 ; Coordinate Uncertainty in Meters: 441.00000.

San Diego, California: 33.248044, -117.336431: : 4/4/2026: Anthony: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3873036234; Occurrence Remarks: Juvenile Southern Pacific, Crotalus oreganus helleri? Sorry for the photo, my neighbor killed it out of caution;; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Absolute behemoth whoΓÇÖs lucky to not have been flattened. One of the biggest rattlesnakes of 2025, and my lifer for this ssp San Diego County; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.925021, -117.25825: : 2/10/2026: Rosalind Morehead: 10 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 33.001057, -117.021817: : 2/11/2026: sdchrissy: 11 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.178865, -117.25754: : 2/13/2026: David Newman: 13 Feb 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.972681, -117.113581: : 2/21/2026: Karen Fraser: 21 Feb 2026 ; Coordinate Uncertainty in Meters: 482.00000.

San Diego, California: 33.012908, -117.171152: : 2/3/2026: Nathan: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.9483, -117.080206: : 1/27/2026: Nathan: 27 Jan 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 33.083705, -117.219802: : 2/22/2026: Naomi Barber-Choi: 22 Feb 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.141789, -117.052747: : 2/21/2026: enpark: 21 Feb 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.062197, -117.080044: : 2/25/2026: Nathan: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.101728, -117.308753: : 2/25/2026: Irelandrbi: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 58.00000.

San Diego, California: 32.990822, -117.118675: : 2/26/2026: Alan Zeyu Ding: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.04322, -117.073922: : 2/26/2026: Paulavr56: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 325.00000.

San Diego, California: 33.061701, -117.26934: : 2/6/2026: Irelandrbi: 6 Feb 2026 ; Coordinate Uncertainty in Meters: 526.00000.

Occurrence Remarks: Sunny 70┬░ 75%; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.167198, -117.051842: : 3/1/2026: lukas_wklmn: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Relocated from: 10555 Hunters Ridge Place, 92127 at 1:08pm 72┬░F, partly clouded sky; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.97477, -116.684945: : 3/4/2026: Kass: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.97477, -116.684945: : 3/4/2026: Ezra Patricelli: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: The moment of truth; Coordinate Uncertainty in Meters: 231.00000.

San Diego, California: 33.118181, -117.16355: : 3/9/2026: David Newman: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 18.00000.

San Diego, California: 33.112775, -116.669913: : 3/9/2026: Alex Barone: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

San Diego, California: 32.961629, -117.072721: : 3/4/2026: mrwalkway: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 33.004356, -117.258575: : 11/8/2025: jimpark67: 8 Nov 2025 ; Coordinate Uncertainty in Meters: 40.00000.

San Diego, California: 32.961788, -117.243496: : 3/10/2026: zippydapinhead: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 6598.00000.

San Diego, California: 33.044375, -117.089364: : 3/11/2026: Paulavr56: 11 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: 80┬░ 73%; Coordinate Uncertainty in Meters: 49.00000.

San Diego, California: 33.026352, -116.952669: : 3/16/2026: gohan123: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.026388, -116.95262: : 3/16/2026: gohan123: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.202663, -116.480934: : 3/16/2026: jhmartin28: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 32.992153, -117.114178: : 5/10/2026: Ramiro Lobo: 10 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.01928, -116.872091: : 5/9/2026: emmaashworth: 9 May 2026 ; Coordinate Uncertainty in Meters: 40.00000.

San Diego, California: 33.005954, -117.207874: : 5/2/2026: Irelandrbi: 2 May 2026 ; Coordinate Uncertainty in Meters: 669.00000.

San Diego, California: 33.233175, -117.251022: : 6/14/2025: paigegrinnell: 14 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.072853, -117.268905: : 5/17/2024: derickbadwell: 17 May 2024 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.098625, -117.129792: : 4/25/2026: Mike ODonnell: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 33.117573, -116.69555: : 3/14/2026: Nicholas Gengler: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 1227.00000.

San Diego, California: 32.953201, -117.036316: : 4/17/2026: barbaradie: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.140942, -117.375999: : 4/29/2026: David Newman: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: Sadly DOR, length about 18ΓÇ¥; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.984161, -116.573133: : 4/30/2026: Ruth Harrison: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 123.00000.

Occurrence Remarks: One of 2; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Second one. Was nearby another; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.045836, -117.082611: : 4/6/2026: billdixon22: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.073096, -116.603453: : 5/7/2026: docprt: 7 May 2026 ; Coordinate Uncertainty in Meters: 479.00000.

San Diego, California: 32.930365, -116.536247: : 5/9/2026: jbesser0: 9 May 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 33.241241, -117.33588: : 5/10/2026: Javier Garcia: 10 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.164546, -117.045907: : 1/2/2026: Jason Guo Θâ¡τ┤½σ«╕: 2 Jan 2026 ; Coordinate Uncertainty in Meters: 82187.00000.

San Diego, California: 33.165113, -117.288089: : 1/31/2026: omar_alui: 31 Jan 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.164436, -117.321409: : 2/7/2026: Naomi Barber-Choi: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.019694, -117.153664: : 7/5/2026: cfer: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.116957, -117.211285: : 2/6/2026: Irelandrbi: 6 Feb 2026 ; Coordinate Uncertainty in Meters: 998.00000.

San Diego, California: 32.929172, -117.170503: : 3/28/2026: sophie0_0: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.140629, -117.372567: : 5/21/2025: David Newman: 21 May 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.924372, -117.259487: : 5/19/2025: Alexis: 19 May 2025 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 33.10595, -117.200341: : 9/16/2025: charleszahl: 16 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.092392, -117.204012: : 9/24/2025: patflanagan: 24 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.92483, -117.179497: : 9/28/2025: Chaos_Entomologist: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.240208, -117.146255: : 9/30/2025: lemonsnapp: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

San Diego, California: 33.200611, -116.497064: : 5/9/2026: Bridget Spencer: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.934442, -117.161453: : 5/12/2026: Nathan: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.946814, -116.605388: : 5/15/2026: bzozel: 15 May 2026 ; Coordinate Uncertainty in Meters: 165.00000.

San Diego, California: 33.014593, -116.712478: : 5/16/2026: Glenn Perelson: 16 May 2026 ; Coordinate Uncertainty in Meters: 42.00000.

Occurrence Remarks: Relocated from 2113 sleepy hallow rd. 93┬░F 11:45am Mostly clear skies Found in garage under garage door seal; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.048633, -117.078314: : 3/18/2026: Paulavr56: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 481.00000.

San Diego, California: 33.24538, -117.224331: : 3/21/2026: JMushinsky: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.937882, -116.504171: : 3/21/2026: Jason Guo Θâ¡τ┤½σ«╕: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 32.982902, -116.570064: : 3/22/2026: sandiegomike: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Kind of timid. Left without saying goodbye.; Coordinate Uncertainty in Meters: 184.00000.

San Diego, California: 33.014685, -116.916245: : 3/22/2026: Julius Simonelli: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.099136, -117.231355: : 3/23/2026: David Newman: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.000644, -116.864792: : 3/24/2026: Terri Varnell: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.959017, -117.194044: : 3/23/2026: Cypress Hansen: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Crotalus organus; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.972684, -117.101595: : 3/29/2026: natstin: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 33.096239, -117.008118: : 3/30/2026: David Newman: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: Large adult on residential property; Coordinate Uncertainty in Meters: 84.00000.

Occurrence Remarks: Relatively small snake. I originally thought it was dead because of the very recent mowing in the area and the injury on the snake that appeared to be from the mower blade, but it had moved from the position where I first found it.; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: I think it was dead as it never moved or rattled - no visible wounds; Coordinate Uncertainty in Meters: 161.00000.

San Diego, California: 32.933306, -117.066918: : 4/3/2026: mcottonsd: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Occurrence Remarks: Right outside the window. Would not be stopping to take pictures if I wasnΓÇÖt safely behind glass.; Coordinate Uncertainty in Meters: 26.00000.

San Diego, California: 33.052606, -117.076461: : 10/6/2025: Paulavr56: 6 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.960881, -117.251982: : 10/4/2025: alexisshenkiryk: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 1990.00000.

San Diego, California: 33.234047, -116.969422: : 10/6/2025: austink333: 6 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.111614, -116.646928: : 6/24/2025: Alex Barone: 24 Jun 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: dead; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.008725, -117.013747: : 12/7/2025: Connor Sadler: 7 Dec 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Right by the trail and folks still dont notice; Coordinate Uncertainty in Meters: 29039.00000.

San Diego, California: 33.005214, -117.290145: : 3/1/2025: Naomi Barber-Choi: 1 Mar 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.098488, -117.355494: : 3/1/2025: Naomi Barber-Choi: 1 Mar 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: I was just saying itΓÇÖs about time I get a double, and while I still havenΓÇÖt got one of those, I canΓÇÖt complain about a triple haha! This post is for the biggest one on the outside; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: Innermost one; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.161181, -117.383401: : 6/20/2025: David Newman: 20 Jun 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.925128, -117.258438: : 6/4/2026: Daniel Coats: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.930686, -117.001179: : 6/6/2026: theandrew: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 357.00000.

San Diego, California: 32.95135, -117.14263: : 6/6/2026: Nikk: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Note the missing rattle.; Coordinate Uncertainty in Meters: 2870.00000.

San Diego, California: 33.093467, -117.279992: : 7/9/2026: Banjo Mike: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.040206, -116.627333: : 6/13/2026: Alex Barone: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.005718, -117.30164: : 6/16/2026: David Newman: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.018356, -116.547195: : 6/15/2026: john_nudibranch: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Snake was moving to a better hiding spot when briefly noticed. Rattle still obvious; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.93768, -117.065194: : 6/21/2026: Amy Alexander: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 31.00000.

San Diego, California: 33.004244, -117.269947: : 6/23/2026: alflo00: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Occurrence Remarks: This was a not very big, young snake. Hard to tell from the photos. Park ranger caught it to relocate it right after I took the photos.; Coordinate Uncertainty in Meters: 192.00000.

San Diego, California: 33.175608, -117.078444: : 6/25/2026: luu_how: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.128965, -117.149703: : 6/29/2026: David Newman: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.058911, -117.075728: : 3/29/2026: angelmi: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 61.00000.

San Diego, California: 32.942444, -117.097656: : 3/10/2025: harrier: 10 Mar 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.998029, -117.098621: : 7/16/2026: lacrichka: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 291.00000.

San Diego, California: 33.012061, -117.246683: : 7/1/2026: Daryll Marie: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: Ca. 35-40 cm long; Coordinate Uncertainty in Meters: 28984.00000.

San Diego, California: 32.928562, -117.244203: : 10/10/2025: Genyss Duncan: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 2000.00000.

San Diego, California: 33.208527, -117.191479: : 10/10/2025: LaceySD83: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 33.00000.

Occurrence Remarks: Just outside the Santa Ysabel Nature Center. About 6 to 8 long.; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.033276, -116.950536: : 3/20/2026: nancysaunders: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 191.00000.

San Diego, California: 33.002907, -117.275283: : 10/21/2020: docprt: 21 Oct 2020 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.003166, -117.275039: : 10/21/2020: Millie Basden: 21 Oct 2020 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 33.102761, -117.257583: : 10/9/2025: vorof: 9 Oct 2025 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 33.050956, -117.076989: : 9/20/2025: Paulavr56: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3408223243; Occurrence Remarks: Friend said it was a rosy boa;; Coordinate Uncertainty in Meters: 441.00000.

GBIFID: 3415961205; Occurrence Remarks: Juvenile Southern Pacific Rattlesnake (Crotalus oreganus helleri) discovered beneath a flat rock along trail and photographed in defensive posture, central San Diego County, California;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 3456351193; Occurrence Remarks: The last snake removal of 2021 was a beautiful one.;; Coordinate Uncertainty in Meters: 360.00000.

GBIFID: 3456902882; Occurrence Remarks: Juvenile Southern Pacific Rattlesnake (Crotalus oreganus helleri), eastern San Diego County, California;; Coordinate Uncertainty in Meters: 1500.00000.

GBIFID: 1837741239; Occurrence Remarks: Rattlesnake - unknown species;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3698101910; Occurrence Remarks: For the darker one;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 3705410766; Occurrence Remarks: Sorry for the photo quality; a small Southern Pacific.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3712663724; Occurrence Remarks: Just a little baby:);; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3747112896; Occurrence Remarks: Baby rattlesnake? Had a yellow tip to its tail. DidnΓÇÖt seem fearful. Kept head up and facing me. Off the edge of the trail at Daley Ranch.;; Coordinate Uncertainty in Meters: 1299.00000.

GBIFID: 3747414496; Occurrence Remarks: This guy didnΓÇÖt look aliveΓÇª no movement at all.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3760291355; Occurrence Remarks: found on singletrack trail while mtn biking;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3760356511; Occurrence Remarks: Went for a hike with my sister. It was an overcast day, in the mid 60ΓÇÖs when we began our hike at 11am. On our way back down the hill, the sun was trying to pop out and thatΓÇÖs when we saw this rattlesnake (1:45pm) over on the side of the trail, already in the sticks of the bushes like this. My sister walked past it, and I was like ΓÇ£there is a snake! ItΓÇÖs not close to you though, itΓÇÖs over here, youΓÇÖre fineΓÇ¥. About 5 minutes later we also saw a king snake, my sister saw this one first, it was primarily black with a thin white stripe down its body. It was too fast for a photo. After we saw the rattlesnake and king snake, we continued to see lots of lizards as the sun slowly tried to continue coming out of the clouds. The forecast as the high today is suppose to be about 73 degrees here. Also, our friends who live in the area have seen red diamondbacks here AND speckled rattlesnakes! So all 3 species live in this area! I just thought that was fascinating, because where I grew up in Valley Center, IΓÇÖve only seen southern pacific rattlesnakes at my house there, where my family has lived for over 20 years. I was praying weΓÇÖd see a rattlesnake today and so happy we did! They are such cool animals. So happy to see one :) especially with the ΓÇ£coolerΓÇ¥ temperatures today compared to a couple days ago out here in San Diego county;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 3760357069; Occurrence Remarks: I saw the tail come off the trail which looked decidedly like a red diamond. I was hoping it would move out from under the bush. It was very agitated and ratlled continuously. It was odd because I couldnt see the normal red diamond pattern. It was darker. And by far the largest snake Ive observed.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 3760121449; Occurrence Remarks: Small rattlesnake moving slowly on the Volcan Mountain trail near Julian.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891094188; Occurrence Remarks: Walking up on a basking rattlesnake is always a good way to start the hike!!! Yikes. This one had an amazing yellowish-iridesence color to it, which doesnt come out so great in the photo, but it was odd enough 3 of us noticed it. Pretty exciting find!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3784665980; Occurrence Remarks: San Diego area, found under downed wood.;; Coordinate Uncertainty in Meters: 199.00000.

GBIFID: 3784992446; Occurrence Remarks: Individual was about two feet in length.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1841258093; Occurrence Remarks: Found dead, appeared to be partially eaten and torn apart.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859510415; Occurrence Remarks: Rescued from a backyard and safely released in open space nearby.;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 3860167129; Occurrence Remarks: 7ΓÇ¥ snake in front of the Santa Ysabel Nature Center. Relocated to a safe place;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3858799184; Occurrence Remarks: Removed this big girl from a local home here in Carlsbad. Truly a big beautiful snake.;; Coordinate Uncertainty in Meters: 527.00000.

GBIFID: 3859972077; Occurrence Remarks: One of the biggest IΓÇÖve ever seen. Between 4-5ΓÇÖ long. Safely relocated;; Coordinate Uncertainty in Meters: 1294.00000.

GBIFID: 3860630937; Occurrence Remarks: A bit scary honestly, given I nearly stepped on this guy while taking out the trash. Ran inside to grab my camera and got some photos from a safer distance.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1847573148; Occurrence Remarks: why did the rattlesnake cross the road?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3892309148; Occurrence Remarks: A busy day of snake relocation. SoPacs are our most common Venomous ≡ƒÉì;; Coordinate Uncertainty in Meters: 6306.00000.

GBIFID: 3892464186; Occurrence Remarks: A photo sent to me prior to arriving to relocate this beautiful SoPac. Stunning.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 3903619270; Occurrence Remarks: With an ambitious snack!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3923719761; Occurrence Remarks: Sadly this snake had ingested a rat that had eaten poison at a home.;; Coordinate Uncertainty in Meters: 433.00000.

GBIFID: 3925477642; Occurrence Remarks: We were called to remove this snake caught in Chicken Wire. Although it was alive during the process it sadly died during transport. This gave me a chance to photograph the fangs and wanted to share.;; Coordinate Uncertainty in Meters: 437.00000.

GBIFID: 3947788687; Occurrence Remarks: This guy went arboreal on us;; Coordinate Uncertainty in Meters: 35775.00000.

GBIFID: 3947427738; Occurrence Remarks: One of our team members was called to remove this snake. Upon his arrival he noticed the Rattlesnake had no rattle.;; Coordinate Uncertainty in Meters: 1141.00000.

GBIFID: 3947134677; Occurrence Remarks: First time handling a rattlesnake;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 3947677881; Occurrence Remarks: An impressive SoPac rescued from a home in San Diego by one of our Wranglers;; Coordinate Uncertainty in Meters: 1737.00000.

GBIFID: 2868212318; Occurrence Remarks: Is this a SoPac (C. oreganus helleri)?;; Coordinate Uncertainty in Meters: 287.00000.

GBIFID: 3966582106; Occurrence Remarks: Very small, no rattle yet. Found in wood pile and relocated.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3985676097; Occurrence Remarks: Two males in ritualistic combat for breeding rights;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 4029136703; Occurrence Remarks: Got called to a residence in the mountains. Homeowner found our friend here curled up in her bathroom enjoying her nice heated floor.;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 1890045973; Occurrence Remarks: found on hilltop, grass area and lots of rocks.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 4046234080; Occurrence Remarks: @madily for Lori?;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4091471469; Occurrence Remarks: Very docile, a baby.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4103314514; Occurrence Remarks: Brush area, side of parking lot, walking up path from beach, native california yellow flowers;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1898829910; Occurrence Remarks: Found on front porch. Many in area spotted in past few months. Fire crew came to take care of. Within a foot from my foot when I stepped out on porch, then stepped back in house.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4103344752; Occurrence Remarks: DOR; CNC 2023;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 4116301663; Occurrence Remarks: A pair of large C. Helleri mating in a yard on Mothers Day. Safely relocated.;; Coordinate Uncertainty in Meters: 272.00000.

GBIFID: 4116603462; Occurrence Remarks: Crossing a trail. Large juvenile. DidnΓÇÖt rattle. Just slithered across the trail and into the bushes. 73 degrees (give or take) air temperature wise at 3:29pm;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 4121261323; Occurrence Remarks: Surprise!;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 1913167767; Occurrence Remarks: Second snake found coiled up next to a bush.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1913167771; Occurrence Remarks: Colorful, good sized rattlesnake. The first of two found.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1098916875; Occurrence Remarks: Approx. 1.1 m long, on trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4138030697; Occurrence Remarks: It was over 30 seconds after I nearly stepped on this snake (and then took the first photos), before it sounded a warning and slithered off; first attempting to take cover under the wooden step on the trail, and then finally taking off under the brush.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4153504621; Occurrence Remarks: Meticulously going into each ground squirrel hole, looking for new friends;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4171835694; Occurrence Remarks: Harvey Moore trail;; Coordinate Uncertainty in Meters: 11354.00000.

GBIFID: 1932341730; Occurrence Remarks: Found this guy on my back patio, which appears to be a Southern Pacific Rattlesnake. It only had a single segment on his rattle and approximately 12 inches long.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 1132413249; Occurrence Remarks: On trail. Approx. 1 meter in length.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 4414161587; Occurrence Remarks: Black and white stripes at end of tail near rattle.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4416930912; Occurrence Remarks: Was in our backyard next to the greenhouse where my Dad and our Corgi had been walking past for a while.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4416760667; Occurrence Remarks: This individual may have been gravid...;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4522560046; Occurrence Remarks: Skin only, no color evident, found at 4200 ft.alt. >36 inches in length. King and Gopher snakes seen In area, but this is clearly a much bigger bodied creature. What might be options?;; Coordinate Uncertainty in Meters: 498.00000.

GBIFID: 4512416144; Occurrence Remarks: Found under a big board;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4596835966; Occurrence Remarks: First observed by Tsaiwei Olee;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4597367084; Occurrence Remarks: was sitting and this guy slithers over, looks up at me to notice me for the first time, and then slithers away;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4600154411; Occurrence Remarks: Seen stretched out along the trail. Looked to be maybe 1.5 to 2 feet long. Waited until it slithered off the side of the trail before trying to pass. I didnt get real close, but it seemed to sense I was there.;; Coordinate Uncertainty in Meters: 1623.00000.

GBIFID: 4607421088; Occurrence Remarks: just a few hundred feet in on the Ridgeline Trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852810342; Occurrence Remarks: Looks same as the one I saw here last time. Small guy.;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 4851800087; Occurrence Remarks: Juvenile. About 18 inches long;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 4855383610; Occurrence Remarks: Look at this stud ≡ƒÆò;; Coordinate Uncertainty in Meters: 1290.00000.

GBIFID: 4855247827; Occurrence Remarks: A smallish snake, temporarily in the bottom of a 30 gallon trash can.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 4855148083; Occurrence Remarks: Spotted by another volunteer during San Dieguito Bioblitz and City Nature Challenge!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4855225337; Occurrence Remarks: 2nd rattlesnake seen this day during San Dieguito Biolblitz/City Nature Challenge. I spotted this one coiled up in grass on side of trail and carefully moved it out for others to see.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4875067787; Occurrence Remarks: Deceased juvenile;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4891966711; Occurrence Remarks: Cuyamaca Rancho State Park, West Mesa Road. Encountered stretched out when hiking in this area. It did not rattle or coil. After sensing us, it moved into brush to on the west side.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4901012102; Occurrence Remarks: Crypic;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4901185140; Occurrence Remarks: 12ΓÇ¥ long juvenile on the porch. Climbed in the rockwall to digest its meal. ItΓÇÖs still there one, now two, now three, now four, days later;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 4901061923; Occurrence Remarks: It was a baby not didnΓÇÖt rattle once;; Coordinate Uncertainty in Meters: 864.00000.

San Diego, California: 33.139477, -116.595907: : 4/14/2019: Larry Hendrickson, California State Parks: 14 Apr 2019 :
GBIFID: 2236874040; Occurrence Remarks: Young one maybe 8 inches uncoiled. Volcan Mountain Foundation property.;; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.950538, -116.60437: : 7/17/2024: Larry Hendrickson, California State Parks: 17 Jul 2024 :
GBIFID: 4908261166; Occurrence Remarks: Warming up on Lookout Fire Rd.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4910953972; Occurrence Remarks: Ramona Grasslands County Preserve, about 4 ft long;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4924106250; Occurrence Remarks: One of two rattlesnake encounters in one night! We almost didnΓÇÖt see them either!!!! Almost down right stepped on em and pooped the pants! what do yΓÇÖall think, southern pacific rattlesnake? Also are they the same as western diamondbacks?;; Coordinate Uncertainty in Meters: 1722.00000.

GBIFID: 4923721378; Occurrence Remarks: The first guy of 2 in one night!;; Coordinate Uncertainty in Meters: 1181.00000.

GBIFID: 1211991900; Occurrence Remarks: Approx. 40 cm in length, apparently finishing a shed as last few cm of tail appeared wrapped in keratin.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2238913064; Occurrence Remarks: William Heise County Park, Julian, CA;; Coordinate Uncertainty in Meters: 526.00000.

GBIFID: 1212002281; Occurrence Remarks: found on Mount Woodson trail SE side under a tree;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4946669976; Occurrence Remarks: Dying on road. Tough to see ≡ƒÿó Likely ran over by car;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4946124732; Occurrence Remarks: The angles make the snake look huge but it was a juvenile (notice one or two buttons on the rattle). I was sitting down on a bench and it slithered out by me. The bench was next to an old building, which the snake might have come out of. 78-80 degrees air temperature wise at 2:55pm. Breeze in the shade feels nice, but in the sun itΓÇÖs a bit warm.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 4950472841; Occurrence Remarks: Moved off-site by trained handler.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4974088617; Occurrence Remarks: Very small, looks like one rattle so guessing juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4974099049; Occurrence Remarks: Estimate: between 3 and 4 ft long when fully extended;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4976554376; Occurrence Remarks: Looks to be a juvenile, roadkill;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4976279495; Occurrence Remarks: Dead and appeared to have been mowed or weed whacked.;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 1249280526; Occurrence Remarks: Wild Horse Trail off Iron Mountain Trail;; Coordinate Uncertainty in Meters: 148.00000.

GBIFID: 5087636368; Occurrence Remarks: Fairly small and seemed to possibly be in brumation as it stayed coiled and unperturbed in the cold early evening.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5088036587; Occurrence Remarks: The one on the outside (but not the third one that is just barely in the frame);; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 5104490426; Occurrence Remarks: I think this is a juvenile western diamondback. First of the year;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 5108228973; Occurrence Remarks: This poor little baby rattlesnake had no idea what to do when four hikers suddenly surrounded him, after one hiker jumped over him.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5133928817; Occurrence Remarks: with the baby rattles;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5134505145; Occurrence Remarks: Harmony Grove, Keithley Preserve, East Creekside Trail. Juvenile about 18 long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5140314799; Occurrence Remarks: Small, about 20-24ΓÇ¥ inches long. The Park shows this as the species commonly found there. Guajome Adobe Park.;; Coordinate Uncertainty in Meters: 143.00000.

GBIFID: 5153218762; Occurrence Remarks: Flowers for size reference, juvenile;; Coordinate Uncertainty in Meters: 143.00000.

GBIFID: 5154179687; Occurrence Remarks: Dead on side of trail;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2283090660; Occurrence Remarks: Found in our backyard this morning.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 5153413219; Occurrence Remarks: DOR. Another dead one seen on S22 in Ranchita shortly before this.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5167832554; Occurrence Remarks: Found near horse corral by landowner. Requested snake to be relocated. 19654 Lake Drive Escondido at Lake Hodges;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5177084174; Occurrence Remarks: A large Crotalus Helleri without a rattle.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5176682169; Occurrence Remarks: Tail of snake;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5188190499; Occurrence Remarks: Baby rattlesnake I found in the evening, it seemed to be feeling sluggish so I managed to snap some decent pictures;; Coordinate Uncertainty in Meters: 53.00000.

GBIFID: 5206705576; Occurrence Remarks: a gorgeous one!!;; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.990583, -117.101: : 6/19/2025: hannahbananafranklin: 19 Jun 2025 :

GBIFID: 5230022240; Occurrence Remarks: was crossing trail ahead of us as we were running. around 6:45 p.m. temperature was around 80 degrees.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2397563071; Occurrence Remarks: Alerted by bird going after snake crawling across front yard.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2422940021; Occurrence Remarks: Mating pair - different colors!;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 2422971804; Occurrence Remarks: A large southern Pacific rattlesnake came up to the trail as I approached, but was disturbed by my presence. It did not cross the trail, but backed into the bush. One half hour later, I found this trail at the same exact location. The direction of travel was consistent with the last position of the snake in the bush. I cannot confirm that the same snake made this trail, but highly-likely. Belly scales / scutes are visible in the 2nd photo. Travel direction in the photos is to the right.;; Coordinate Uncertainty in Meters: 671.00000.

GBIFID: 2423049055; Occurrence Remarks: Roughly 5 feet long with at least 5 rattles.;; Coordinate Uncertainty in Meters: 1768.00000.

San Diego, California: 32.960309, -116.583028: : 9/20/2019: Larry Hendrickson, California State Parks: 20 Sep 2019 :

GBIFID: 2447985134; Occurrence Remarks: Small snake, perhaps 14 inches long. Definitely not in any dormant/hibernation mode;; Coordinate Uncertainty in Meters: 157.00000.

GBIFID: 2451711399; Occurrence Remarks: According to the sign at the entrance of the park, the rattlesnakes are Red Diamond... This one was about 3 feet long;; Coordinate Uncertainty in Meters: 57.00000.

GBIFID: 2563569328; Occurrence Remarks: Deceased. Close to 12 inches long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2576349535; Occurrence Remarks: Rattlesnake eating a lizard;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2576268880; Occurrence Remarks: Temp: 54F;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1315060803; Occurrence Remarks: Turkey Vulture and Yellow Jackets competing for a squished rattlesnake;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2603467950; Occurrence Remarks: Seen on trail in Daley Ranch. I have a video to add later, also need to refine location;; Coordinate Uncertainty in Meters: 2751.00000.

GBIFID: 2611179800; Occurrence Remarks: The snake was on the trail to Garnet Peak, Cleveland National Forest, CA, near Mt. Laguna, off the PCT.;; Coordinate Uncertainty in Meters: 150.00000.

GBIFID: 2611043947; Occurrence Remarks: baby found outside of garage;; Coordinate Uncertainty in Meters: 6216.00000.

GBIFID: 2611063066; Occurrence Remarks: Juvenile rattlesnake in the back patio under the hose. Location slightly obscured.;; Coordinate Uncertainty in Meters: 1319.00000.

GBIFID: 1453182697; Occurrence Remarks: About 14 long, in the underbrush beside the trail. I debated between Western and Southern Pacific (as its tail tip was yellow). This is obviously a young snake.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2620027521; Occurrence Remarks: Rattlesnake eating a bunny.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3079710774; Occurrence Remarks: Difficult to see in the shade in the photos. Tail clearly visible in the field.;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 2626626667; Occurrence Remarks: Found on front doorstep. (S)he was caught and transported to a new home by our neighborhood reptile man.;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 3090615332; Occurrence Remarks: Courtesy of mountain biker Jeff Campagana;; Coordinate Uncertainty in Meters: 42.00000.

GBIFID: 2626302873; Occurrence Remarks: At first I thought it was a gopher snake, then took note of head & tail (fortunately) and backed off.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2634535591; Occurrence Remarks: Boulder Creek Rd going south towards Descanso. A medium size snake, about 3 ft.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2641381636; Occurrence Remarks: October 2013.;; Coordinate Uncertainty in Meters: 182.00000.

GBIFID: 2802788438; Occurrence Remarks: Heard the rattle before we saw it. It was way off the hiking trail, and this is the pics I could get of it with my phone from the trail...didnΓÇÖt want to get much closer due to lots of vegetation and it looked scared. Felt lucky to see one. I love rattlesnakes! I would say low 80ΓÇÖs temperature wise. 2:45pm.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2802735541; Occurrence Remarks: Juvenile Southern Pacific rescued and relocated away from a neighbors pool.;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 2803018862; Occurrence Remarks: Estimated length 2.5 - 3 had just crossed a broad, well travelled dirt trail. Overcast morning;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453429400; Occurrence Remarks: Juvenile moving quickly into the brush.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453491447; Occurrence Remarks: Juvenile about 14 long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2850773056; Occurrence Remarks: More aggressive than most rattlesnakes Ive seen, started rattling when I was at quite a distance so I gave it space as it crossed the road.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 2859978512; Occurrence Remarks: Track across trail we had passed recently. Searched w/binoculars, heard the rattle. Did not see the originator. Based upon past sightings at this location, this is likely C. origanus. My thanks to reviewer.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2851034087; Occurrence Remarks: San Elijo Lagoon from Orilla trailhead;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2864878504; Occurrence Remarks: I was hoping to see a rattlesnake in the canyon and we were very lucky to see this!;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 2868086129; Occurrence Remarks: Very young and small, just a few rattles. The caretakers of Whelan found it in their garage and were going to relocate this away from their home. Earlier it had eaten a mouse in one of their mouse traps.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 2873966279; Occurrence Remarks: Young rattlesnake found in backyard. Relocated back into canyon open space;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 2883207512; Occurrence Remarks: Notice this specimen was completely missing itΓÇÖs rattle.;; Coordinate Uncertainty in Meters: 937.00000.

GBIFID: 3070472355; Occurrence Remarks: next to riparian zone;; Coordinate Uncertainty in Meters: 115.00000.

GBIFID: 3079801976; Occurrence Remarks: Neonate. Bulge in the stomach implies it recently ate.;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 2901823674; Occurrence Remarks: Found in patio by cat.;; Coordinate Uncertainty in Meters: 1819.00000.

GBIFID: 1571092119; Occurrence Remarks: This small snake was coiled up right off Annes trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 910498209; Occurrence Remarks: On our way back to parking lot for lunch break I walked up a burned hillside and found this nice looking helleri on the crawl and called the group up to see and take pics of. 3rd snake of the day.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 910498271; Occurrence Remarks: After I found the first helleri and was waiting for Jeff Nordland and others to come up to see it, they ended up finding a 2nd one, possibly the first ones mate since they were pretty close together. Took some voucher pics of this one as well.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572349704; Occurrence Remarks: Young adult, 2-3ft log;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 3079821795; Occurrence Remarks: Rattle visible in low center of 2nd photo;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3079758893; Occurrence Remarks: First time ever finding a mating pair of C. Helleri in the wild.;; Coordinate Uncertainty in Meters: 669.00000.

GBIFID: 3079906878; Occurrence Remarks: Little guy, wouldve just filled a half pint deli container. Had at least 1 rattle segment plus button. Catching some morning sun.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 3090671318; Occurrence Remarks: Hanging by the house. Relocated to preserve;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3097212575; Occurrence Remarks: Close to parking lot;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 3113313694; Occurrence Remarks: Carlsbad, CA OLYMPUS DIGITAL CAMERA P5060007;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3118214766; Occurrence Remarks: Laying out across the dirt trail in dappled shade--very well camouflaged. Seen here crossing back along side itself.;; Coordinate Uncertainty in Meters: 255.00000.

GBIFID: 1668825694; Occurrence Remarks: Did not seem very big - wasnt sure if lizard or snake, but appears to have rattle and outsized head in photo. Poor focus as I was trying to keep the dog from rolling in it as we dodged traffic. :(;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.972181, -117.245711: : 10/5/2010: Bradford Hollingsworth: 5 Oct 2010 :
GBIFID: 1024200633; Occurrence Remarks: San Dieguito Lagoon;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1668884707; Occurrence Remarks: Baby rattlesnake;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3314497866; Occurrence Remarks: Crossing the hiking trail and moving fast. Angles of the pictures make it look big, but it was a little guy, a little over a foot long. The high was forecasted to be 88 degrees here today.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 3320910947; Occurrence Remarks: 86 degrees at 4pm when we left the parking lot, saw the snake at 4:26pm on hike. Angle of photos make it look big; it was a juvenile with a small button or two on tail.;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 1024217638; Occurrence Remarks: A baby, right by the green valley falls trail.;; Coordinate Uncertainty in Meters: 862.00000.

GBIFID: 3325637375; Occurrence Remarks: Relocated from Santa Ysabel Nature Center childrenΓÇÖs play area.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3325597544; Occurrence Remarks: Second snake in two days relocated from Santa Ysabel Nature Center childrenΓÇÖs play area.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2557881001; Occurrence Remarks: This rattler was devouring a rabbit in Torrey Pines State Reserve on the Marsh Trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3384161632; Occurrence Remarks: An aberrant morph juvenile C. Helleri.;; Coordinate Uncertainty in Meters: 643.00000.

San Diego, California: 32.988453, -117.130805: : 4/1/2026: mathel: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 139.00000.

San Diego, California: 33.229217, -117.354088: : 7/3/2026: scassman: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.075476, -117.285244: : 8/23/2025: David Newman: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

Occurrence Remarks: Relocated from Solterra Vista Parkway on the sidewalk across from the school near 32.9642 -117.1757; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.016108, -116.626607: : 8/11/2025: Doug Andrews: 11 Aug 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.02897, -117.244022: : 8/31/2025: niko_traubman: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.123049, -117.038742: : 8/31/2025: David Newman: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.005015, -117.154134: : 8/31/2025: David Newman: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.119744, -117.180507: : 7/8/2026: toyonfinder: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.139911, -117.267499: : 10/23/2025: Samantha Court: 23 Oct 2025 ; Coordinate Uncertainty in Meters: 96.00000.

San Diego, California: 33.151584, -117.386158: : 9/1/2025: David Newman: 1 Sep 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.048395, -117.083083: : 7/9/2026: kiwithechameleon: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 20.00000.

San Diego, California: 32.961525, -116.576483: : 8/30/2025: ackowert: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 2102.00000.

Occurrence Remarks: Stonewall Peak trail; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.925559, -117.174551: : 6/30/2026: TJ Woodard: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 5759.00000.

San Diego, California: 32.937725, -117.150772: : 8/26/2025: Nikk: 26 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.034542, -117.125948: : 9/7/2025: David Newman: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.043445, -116.65343: : 9/6/2025: Glenn Perelson: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 74.00000.

San Diego, California: 33.178207, -117.368956: : 9/7/2025: David Newman: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.924867, -117.179138: : 9/9/2025: hope2022: 9 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.048939, -117.078833: : 10/9/2025: Paulavr56: 9 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.928372, -117.256508: : 7/11/2026: Michael Zelun Lee: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.177357, -116.709925: : 9/5/2025: california_every_reptile: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.105258, -116.59948: : 7/13/2026: Alex Barone: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 32.950792, -117.033133: : 10/25/2025: ratling: 25 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Relocated from: 10540 Mathieson St, San Diego, CA 92129; Coordinate Uncertainty in Meters: 28.00000.

Occurrence Remarks: Occurrence Remarks: Big, healthy; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.602314, -116.439864: : 3/18/2026: dalemeister: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.312387, -117.477517: : 10/26/2025: Jason McFarland: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.58105, -117.781662: : 10/28/2025: devdogz: 28 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 33.46655, -118.51378: : 10/16/2025: Amy Pace: 16 Oct 2025 ; Coordinate Uncertainty in Meters: 28957.00000.

San Diego, California: 33.348125, -116.87092: : 10/19/2025: Jess Mullins: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.660075, -117.653061: : 10/20/2025: cynbiosis: 20 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 33.451449, -118.507574: : 7/15/2026: ghorning: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 48.00000.

Orange, California: 33.452457, -117.698029: : 2/16/2024: Sabina Lucke Lawrence: 16 Feb 2024 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.415444, -117.676395: : 5/21/2024: cesarlanda00: 21 May 2024 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.668425, -117.618531: : 9/20/2024: Noah Le: 20 Sep 2024 ; Coordinate Uncertainty in Meters: 68.00000.

Los Angeles, California: 33.388402, -118.417082: : 4/14/2024: Hailey Dunahoo: 14 Apr 2024 ; Coordinate Uncertainty in Meters: 28984.00000.

Riverside, California: 33.503483, -116.591637: : 6/6/2024: Chris Jackson: 6 Jun 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.571428, -117.800163: : 9/7/2025: tristamovius: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 33.406325, -117.230758: : 3/16/2026: pavelbykau: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4096722706; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 1.11000.

Orange, California: 33.705058, -118.050955: : 4/4/2026: scincoides: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Orange, California: 33.576408, -117.812508: : 2/9/2026: Daniel: 9 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.269369, -116.63995: : 5/18/2026: bdog: 18 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Occurrence Remarks: was dead; has been ran over by vehicle; Coordinate Uncertainty in Meters: 8.00000.

Orange, California: 33.643662, -117.611328: : 5/15/2026: Daniel Deubler: 15 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.560325, -117.812728: : 5/24/2026: Daniel: 24 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Unfazed by my presence, it hung here for 10 minutes until it suddenly exited to the bushes; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.312415, -117.039251: : 4/5/2026: Barb McMurdo: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 33.312418, -117.039181: : 4/5/2026: Barb McMurdo: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Orange, California: 33.705272, -118.050644: : 4/18/2026: socalviolinguy: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.385663, -117.464881: : 4/19/2026: Jon Arnette: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 103.00000.

Orange, California: 33.694658, -117.65212: : 4/18/2026: Elijah S.: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.551158, -117.742683: : 4/19/2026: crittercatch: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 33.327462, -118.345262: : 4/19/2026: awendtii: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.596763, -117.804863: : 4/20/2026: cadenlee: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 129.00000.

Riverside, California: 33.614948, -116.427212: : 4/22/2026: dalemeister: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 33.377547, -116.745637: : 4/23/2026: Neil Balchan: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Orange, California: 33.656158, -117.812033: : 4/24/2026: morganmannon: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Riverside, California: 33.507259, -117.283362: : 4/25/2026: Vasily Reinkymov: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.660344, -117.938811: : 5/19/2026: Diana Terreros: 19 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.56378, -116.930563: : 4/12/2026: rgpress: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.550892, -117.727623: : 5/22/2026: Patricia Brandom: 22 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Staring at each other, but separated by glass; Coordinate Uncertainty in Meters: 12.00000.

Riverside, California: 33.50077, -117.117325: : 5/27/2026: Luca Cinus: 27 May 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Riverside, California: 33.493533, -117.190972: : 3/18/2026: Joshua Williams: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.482082, -117.675317: : 5/26/2026: vcl_herping: 26 May 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.619922, -117.802322: : 5/30/2026: Michael San Miguel: 30 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.70368, -118.05287: : 3/21/2026: Robert Winter: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 3760334612; Occurrence Remarks: Eating lizard;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4130114642; Occurrence Remarks: One of the most impressive Helleri IΓÇÖve seen in a while. Found at a horse farm in Bonsall CA. Safely relocated within a mile from capture site. Photo credit: Michael Svoboda;; Coordinate Uncertainty in Meters: 746.00000.

Orange, California: 33.628282, -117.805955: : 11/13/2025: Melissa Pearson: 13 Nov 2025 ; Coordinate Uncertainty in Meters: 202.00000.

GBIFID: 4063027550; Occurrence Remarks: Relocated from stables tack room.;; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 33.417108, -118.480209: : 6/17/2025: zaraberry: 17 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.621772, -116.675208: : 6/6/2025: evanjoe2000: 6 Jun 2025 ; Coordinate Uncertainty in Meters: 21.00000.

Riverside, California: 33.621978, -116.675025: : 6/6/2025: evanjoe2000: 6 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.704892, -118.05355: : 10/4/2025: aelston12: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.699149, -118.049109: : 2/15/2026: jsjt: 15 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.637087, -117.772453: : 2/22/2026: rstottlemyer: 22 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.4052, -117.641654: : 2/24/2026: Sabina Lucke Lawrence: 24 Feb 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.445225, -117.589578: : 2/25/2026: tania_morkel: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 33.432913, -118.474997: : 2/27/2026: awendtii: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Orange, California: 33.636857, -117.63203: : 2/27/2026: Caleb Martinez: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Occurrence Remarks: Definitely heard a distinct rattle! Kind of high ish pitched and only lasted 2 full seconds.; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.555832, -117.563562: : 3/1/2026: mickeyb: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 33.444838, -118.499288: : 2/25/2026: nathantay: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.473577, -117.645463: : 3/2/2026: Luke Feilberg: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Rattled from under metal; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.652442, -117.596467: : 3/8/2026: jalopy: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.51187, -117.68847: : 6/2/2025: averyyclarke: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 17.00000.

Orange, California: 33.522794, -117.74575: : 3/8/2026: E. Merkt: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.638203, -117.553486: : 3/9/2026: Kevin Castelluccio: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.615107, -117.800939: : 3/8/2026: Enrique Brenes: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 50.00000.

Riverside, California: 33.586473, -117.238522: : 3/14/2026: Missy Cohen: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.675525, -116.681787: : 3/15/2026: josh830: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.6277, -117.8047: : 3/21/2026: Collin Dennis: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Riverside, California: 33.48563, -117.200312: : 4/23/2026: c_merrylees: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 5349.00000.

Los Angeles, California: 33.43274, -118.502329: : 4/2/2026: Jack Bailey: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Orange, California: 33.61222, -117.760266: : 4/27/2026: mooseandsquirrel: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Orange, California: 33.638822, -117.616692: : 5/3/2026: archer_556: 3 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.611593, -116.442178: : 5/3/2026: dalemeister: 3 May 2026 ; Coordinate Uncertainty in Meters: 30.00000.

Occurrence Remarks: Found dead on road; Coordinate Uncertainty in Meters: 6.00000.

Riverside, California: 33.478461, -116.990575: : 5/3/2026: mountaingulo: 3 May 2026 ; Coordinate Uncertainty in Meters: 497.00000.

Orange, California: 33.575263, -117.841072: : 5/7/2026: Randall English: 7 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.647922, -117.606688: : 5/7/2026: Ron Vanderhoff: 7 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.519135, -117.680379: : 5/7/2026: Grace duPont Moore: 7 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Orange, California: 33.510078, -117.741937: : 5/7/2026: chris_gort: 7 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 33.357746, -118.482961: : 5/8/2026: Sarah Williams: 8 May 2026 ; Coordinate Uncertainty in Meters: 1442.00000.

Orange, California: 33.573937, -117.839447: : 5/10/2026: frizzywitch: 10 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.654224, -117.783276: : 5/10/2026: unclediya: 10 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Orange, California: 33.45822, -117.563605: : 1/7/2026: curse_tin: 7 Jan 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.405287, -117.206138: : 1/16/2026: Tod Reeder: 16 Jan 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 33.347303, -118.328939: : 1/22/2026: Aaron Kreisberg: 22 Jan 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.574579, -117.81075: : 1/30/2026: Angela Sarunchartinonth: 30 Jan 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.574544, -117.810734: : 1/30/2026: Randall English: 30 Jan 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.293663, -117.389092: : 1/27/2026: Jason McFarland: 27 Jan 2026 ; Coordinate Uncertainty in Meters: 30.00000.

Occurrence Remarks: This baby rattlesnake was run over by a car.; Coordinate Uncertainty in Meters: 195.00000.

Orange, California: 33.573136, -117.809608: : 2/8/2026: martinup: 8 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.446778, -117.602425: : 2/8/2026: jman66: 8 Feb 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.58203, -117.75222: : 5/8/2026: Connor Wehner: 8 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.565819, -117.764544: : 5/3/2026: brettheili: 3 May 2026 ; Coordinate Uncertainty in Meters: 36.00000.

Los Angeles, California: 33.394458, -118.477692: : 3/20/2026: Grigory Heaton: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: 68┬░F, sunny, no clouds; Coordinate Uncertainty in Meters: 65.00000.

Occurrence Remarks: 68┬░F, sunny, no clouds, skittish; Coordinate Uncertainty in Meters: 65.00000.

Riverside, California: 33.576342, -116.502645: : 5/28/2025: macjones1014: 28 May 2025 ; Coordinate Uncertainty in Meters: 30.00000.

Occurrence Remarks: This was a little guy. It was a good thing it was noticed since it was resting on a hand hold spot.; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.663132, -117.620092: : 9/19/2025: benewing: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Orange, California: 33.622166, -117.64787: : 9/19/2025: benewing: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Orange, California: 33.402709, -117.597611: : 9/23/2025: Jerry Addison: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.620122, -116.546111: : 3/31/2026: James Fowler: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.401913, -117.59217: : 5/11/2026: Randall English: 11 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.705679, -118.045257: : 5/11/2026: Robert Winter: 11 May 2026 ; Coordinate Uncertainty in Meters: 196.00000.

Orange, California: 33.622083, -117.805214: : 4/17/2026: Michael Heiman: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.563988, -117.815513: : 5/14/2026: tristamovius: 14 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.705616, -118.047087: : 5/16/2026: Robert Winter: 16 May 2026 ; Coordinate Uncertainty in Meters: 577.00000.

Orange, California: 33.706759, -118.054469: : 5/16/2026: Robert Winter: 16 May 2026 ; Coordinate Uncertainty in Meters: 196.00000.

Orange, California: 33.655853, -117.781237: : 5/17/2026: abmccull: 17 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.701722, -118.052528: : 5/13/2026: Mbugs: 13 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 33.406028, -117.249855: : 5/16/2026: Dora: 16 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.675525, -116.681787: : 3/15/2026: Amber Reece: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.564285, -117.51563: : 3/20/2026: Caleb Martinez: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 37.00000.

Los Angeles, California: 33.32918, -118.342597: : 3/22/2026: nbeyer: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.50895, -117.292304: : 3/15/2026: erinlikeshiking: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 186.00000.

Orange, California: 33.543963, -117.73168: : 3/25/2026: Paolo Pietropaolo: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 18.00000.

Riverside, California: 33.48725, -117.146854: : 3/25/2026: natalia-bayon: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: Screenshot; Coordinate Uncertainty in Meters: 11.10000.

Occurrence Remarks: Riverside County, CA; Coordinate Uncertainty in Meters: 28930.00000.

Orange, California: 33.612873, -117.751909: : 3/29/2026: bcolter: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.612901, -117.751906: : 3/29/2026: bcolter: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.630274, -117.802628: : 3/30/2026: gaviastellata: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 4690.00000.

San Diego, California: 33.348878, -117.026786: : 3/29/2026: davetheo: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.698514, -118.043649: : 3/30/2026: echubbi: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 196.00000.

San Diego, California: 33.410538, -117.215758: : 3/21/2026: nathantay: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.565142, -117.241637: : 4/1/2026: balakay2765: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.616913, -117.622953: : 4/1/2026: thecrustyhobo: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 501.00000.

Los Angeles, California: 33.43272, -118.502328: : 4/2/2026: Q: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 33.432703, -118.502337: : 4/2/2026: Q: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.55702, -117.25438: : 4/4/2026: Maverick Grant: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.293748, -116.646781: : 4/5/2026: W. Terry Hunefeld: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 108.00000.

Orange, California: 33.556906, -117.563411: : 4/5/2026: Sergey: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.576783, -117.813142: : 4/6/2026: Randall English: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.517176, -117.577258: : 4/7/2026: Antonio Moreno: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.622314, -117.804975: : 4/9/2026: Melissa Pearson: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.628282, -117.805955: : 4/9/2026: Melissa Pearson: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 202.00000.

Riverside, California: 33.491085, -117.204052: : 3/21/2026: Ella Horvath: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.707113, -118.047797: : 3/25/2026: Sam Wilson: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.411228, -117.590788: : 3/29/2026: larlef: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 33.689528, -118.295826: : 12/7/2025: herphendrie: 7 Dec 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.690686, -117.104973: : 12/22/2025: herphendrie: 22 Dec 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

San Diego, California: 33.343392, -116.90152: : 7/15/2025: Lucas Ramirez: 15 Jul 2025 ; Coordinate Uncertainty in Meters: 56.00000.

San Diego, California: 33.342963, -116.901017: : 6/28/2025: Lucas Ramirez: 28 Jun 2025 ; Coordinate Uncertainty in Meters: 12.00000.

Orange, California: 33.50507, -117.735467: : 6/1/2026: notacop: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: 1 ft., used a stick to get him off the road. Beautiful.

Occurrence Remarks: Was captured in a populated area. Relocated deep in the canyon.; Coordinate Uncertainty in Meters: 35.00000.

San Diego, California: 33.299143, -117.370875: : 6/8/2026: Kyle Otterbine: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 1544.00000.

Occurrence Remarks: Morris Ranch Road

San Diego, California: 33.296817, -117.022894: : 6/8/2026: biffedthatone: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.709412, -118.057878: : 6/11/2026: rowancalpoly: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 33.332116, -116.907145: : 6/11/2026: petegordon: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.594195, -117.633628: : 3/18/2026: vcl_herping: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.706802, -118.045322: : 6/14/2026: cschultz44: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 648.00000.

San Diego, California: 33.291738, -117.45163: : 6/15/2026: Cneoridium: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.575297, -117.813087: : 6/17/2026: Daniel: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.601372, -116.431084: : 6/20/2026: dalemeister: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Occurrence Remarks: Found dead; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.654247, -117.783324: : 7/13/2026: penelopeman: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.544322, -117.726405: : 6/28/2026: Andrew Hein: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Service road to the water tower; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.35903, -116.86773: : 9/22/2025: Kyle Mellon: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.544155, -117.755363: : 9/26/2025: chris_gort: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Safely relocated to wilderness park; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.590538, -117.009389: : 10/29/2025: Hannah Comstock: 29 Oct 2025 ; Coordinate Uncertainty in Meters: 28957.00000.

San Diego, California: 33.332472, -117.33193: : 9/23/2025: rbesser: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 9.00000.

San Diego, California: 33.262634, -117.105804: : 10/1/2025: toadcrawlquick: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Orange, California: 33.615728, -117.798542: : 6/8/2025: Andrea Carpio: 8 Jun 2025 ; Coordinate Uncertainty in Meters: 416.00000.

Orange, California: 33.547583, -117.722847: : 3/31/2026: megkesch: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3455659883; Occurrence Remarks: Adult female Southern Pacific Rattlesnake (Crotalus oreganus helleri) discovered under a piece of corrugated metal and photographed as she lay, northern San Diego County, California;; Coordinate Uncertainty in Meters: 350.00000.

Riverside, California: 33.507519, -117.282504: : 3/15/2026: biophil150: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3456771332; Occurrence Remarks: OΓÇÖNeil Wilderness Park, caught & relocated Southern Pacific Rattlesnake from campground to remote dry creek bed.;; Coordinate Uncertainty in Meters: 697.00000.

GBIFID: 3457178703; Occurrence Remarks: Relocated angry rattlesnake stuck in the road by playground. Re-released in more remote area.;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 1838017165; Occurrence Remarks: Small, young rattlesnake with only a nub for a rattle along French Valley Trail.;; Coordinate Uncertainty in Meters: 1305.00000.

GBIFID: 3705747081; Occurrence Remarks: under a coverboard. This individual was perhaps one of the weirdest behaving rattlesnakes I have ever seen. It never hissed or rattled, even when being moved. It allowed me to position it gently with a snake hook and only flicked its tongue in response. It was definitely warmed up too, because as soon as it was put by its board, it slithered under really fast.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 3747186661; Occurrence Remarks: No idea how the jaw was injured, though it seemed not to be too fresh & the snake still appeared healthy!;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4028724680; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3759678723; Occurrence Remarks: Baby rattlesnake chilling in the rocks.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3070602474; Occurrence Remarks: partner found him in my foot print. I must have accidentally stepped on him, but he was just fine;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.305195, -117.20195: : 4/6/2026: langooney: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1839250248; Occurrence Remarks: Love snakes;; Coordinate Uncertainty in Meters: 207.00000.

GBIFID: 3784953440; Occurrence Remarks: Observed a short (3-4ΓÇ¥) section of what appeared to be a severed portion of an unidentified snake in a section of recently mowed vegetation along the roadside.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3802671567; Occurrence Remarks: Very young one;; Coordinate Uncertainty in Meters: 116.00000.

GBIFID: 3858866631; Occurrence Remarks: Thanks to my neighbor for finding this lil one on his property, capturing it in a bucket, bringing it to me in case I wanted it (I wish but Im not an experienced snake handler), and then setting it free a good bit away from the neighborhood.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3859302855; Occurrence Remarks: little danger noodle;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3873445671; Occurrence Remarks: Cute baby;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3881701221; Occurrence Remarks: Startled a Southern Pacific Rattlesnake moving along the trail that immediately coiled into a defensive position and began to vigorously rattle.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3889252418; Occurrence Remarks: One bulb, basking in the dark on a warm gravel driveway. Relocated to a grassy field.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3888789249; Occurrence Remarks: Accidentally caught this snake when I nearly stepped on it while filming my dog playing with the tadpoles at the pond. This was the best screen cap I could get. Head is at top of frame, tail bottom;; Coordinate Uncertainty in Meters: 199.00000.

GBIFID: 3915533248; Occurrence Remarks: Southern Pacific Rattlesnake (Crotalus oreganus ssp. helleri) Crotalus helleri is a pit viper subspecies found in southwestern California and south into Baja California, Mexico. Rattlesnakes are typically described as poisonous, but they are actually venomous. A poisonous snake is one that is harmful to eat. A venomous snake injects dangerous venom into its victim. Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. Leslie Anthony. Snakebit: Confessions of a Herpetologist. Greystone Books, 2008. Guide to the Amphibians and Reptiles of California Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3925066892; Occurrence Remarks: My dad saw a rattlesnake today at the house! I think it was 82 degrees at 2:40pm.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 1883959215; Occurrence Remarks: Juvenile in wash at night.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4080922557; Occurrence Remarks: Found around the chicken coop. Warm day.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 3079665488; Occurrence Remarks: With a fresh meal;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1802601669; Occurrence Remarks: This is the Rattlesnake common on Catalina Island, thought to be C. viridis, however research is ongoing because it is more venomous than mainland snakes. Eating a Rat, which both were in my house.;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 4129856681; Occurrence Remarks: Small juvenile coiled amidst the decaying wood against the cliffbanks along the trail in Dripping Springs;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4134227678; Occurrence Remarks: Photo credit: Michael Svoboda Photography;; Coordinate Uncertainty in Meters: 605.00000.

GBIFID: 4138189880; Occurrence Remarks: Deceased, covered in ants;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1931497205; Occurrence Remarks: Adolescent, Healthy, 12 in.;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 4407483421; Occurrence Remarks: Some hateful creature bashed this poor rattlesnake to death at the stables. I highly doubt this is simply accidental roadkill. Some people would rather kill whatever scares them than act rationally. Everyone knows I do minor relocations on a regular basis and I am not a stranger here. Deeply disappointed. Gore warning for last three slides.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 4416761547; Occurrence Remarks: Found dead on dirt road.;; Coordinate Uncertainty in Meters: 239.00000.

GBIFID: 4424309533; Occurrence Remarks: Very young, approximately 10 inches long;; Coordinate Uncertainty in Meters: 45.00000.

GBIFID: 4438985549; Occurrence Remarks: About 12 inches long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4440995671; Occurrence Remarks: Five or six hatchlings;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4453851266; Occurrence Remarks: Juvenile.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4458424631; Occurrence Remarks: Baby rattlesnake, ate too much for Thanksgiving. 9 inches long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4465443912; Occurrence Remarks: Found this guy on a hike, it was in by some bushes, around 10:00am. It was sunny with a slight breeze.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4522675016; Occurrence Remarks: Surprisingly, found it in a field near my house! Was poking around and decided to flip a rock for no reason, and wah-laa, baby southern pacific :) Made my day. Im from the Pomona valley so Im not used to the plentiful snakes around here. Especially, in February. Being, in Riverside county is gonna be great for me this year...;; Coordinate Uncertainty in Meters: 11.10000.

Riverside, California: 33.578266, -117.093945: : 7/13/2023: Beren Erkan (herper/photographer): 13 Jul 2023 :
GBIFID: 4522836974; Occurrence Remarks: Insitu (as found);; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4597132719; Occurrence Remarks: Coiled under an Eriogonum fasciculatum. Chiquita Ridge Trail;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4597065242; Occurrence Remarks: Observed a Southern Pacific Rattlesnake napping in the middle of the trail with a previous visitorΓÇÖs sunglasses (Images 11-14) lying right next to the snakeΓÇÖs rattle. The snake soon awoke and slithered off the trail into the brush.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4597625625; Occurrence Remarks: Observed a Southern Pacific Rattlesnake crossing the trail.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4600074925; Occurrence Remarks: 2-3 ft long;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 4599852365; Occurrence Remarks: Dead on road.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4607530716; Occurrence Remarks: A dark individual.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4607396508; Occurrence Remarks: Walked up to a rock pile to rest, looked to my right and noticed a 4 ft. Southern Pacific, sunning on the rocks. He started rattling very loudly and then took cover under the rocks rather quickly. Couldnt get a picture..;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4846832164; Occurrence Remarks: Deceased baby :(;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 4851802062; Occurrence Remarks: Seemed small, no penny for scale but there is viable footprints.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4852302497; Occurrence Remarks: My first of season at Quail Hill, just off the asphalt bikeway. Looking at a Bells Vireo and the snake started rattling. Backed away quick.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4852823248; Occurrence Remarks: Santa Rosa plateau, transpreserve trail. 1:00 pm;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4852046364; Occurrence Remarks: Baby, about a foot long. At the trail behind HarrahΓÇÖs.;; Coordinate Uncertainty in Meters: 117.00000.

GBIFID: 4853153221; Occurrence Remarks: juvenile;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4863521668; Occurrence Remarks: Two Southern Pacific Rattlesnakes coiled up together. Possibly a mating pair.;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 4867875665; Occurrence Remarks: Quickly photographed, then moved off this well traveled dirt road with a stick.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 4872541901; Occurrence Remarks: very large. tail in burrow.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4875352972; Occurrence Remarks: Speckeld rattle snake;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4892089275; Occurrence Remarks: #dark_I0rd2;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070251556; Occurrence Remarks: Neonate hit within the last hour. We drove this road about an hour prior and would have seen it if it had been hit on the first pass. Very fresh. GPS approximate, found on the eastern half of middle ranch road;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 3070290614; Occurrence Remarks: 21.5┬░C air temp, 100┬░F ground temp. Crossing road during sol-lunar peak activity period;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070528611; Occurrence Remarks: 20*C air temp, 20.2*C ground temp;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4900932012; Occurrence Remarks: Observed a juvenile warming up on the trail.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4903808795; Occurrence Remarks: DidnΓÇÖt rattle but a nearby squirrel was chirping a very load screech.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4904303191; Occurrence Remarks: Observed dead.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4904274083; Occurrence Remarks: Observed two (2) Southern Pacific Rattlesnakes next to each other on the side of Pheasant Run trail. The second Rattlesnake (to the rear) quickly retreated into the brush.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2237477637; Occurrence Remarks: Baby Southern Pacific, about the size of a palm.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2237520375; Occurrence Remarks: On red rock canyon trail;; Coordinate Uncertainty in Meters: 1250.00000.

GBIFID: 2238799067; Occurrence Remarks: Apple Creek area. This area burned in June 2018. Our survey was to look at what was coming back, but I saw this little guy sunning itself by the creek. It seemed completely unaware of my presence.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4923874862; Occurrence Remarks: 66-69 degrees air temperature wise at 12:06am. Appears to be a juvenile-like size. I let it be and didnΓÇÖt touch or move it. When I woke up about 7 hours later at 7am, I checked for it and it was still down there. I used my snake hook to get it into the bucket and moved it down by a creek away from people.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4935756045; Occurrence Remarks: Super green SoPac. At first thought it was possibly a Scoot;; Coordinate Uncertainty in Meters: 1007.00000.

GBIFID: 4936421427; Occurrence Remarks: Rattling;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4937055482; Occurrence Remarks: Roadkill and missing rattle;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4936095689; Occurrence Remarks: Im sorry to post this snake like this. My neighbors dog was bit by it and now possibly has brain damage. I really need an ID. I think its a Southern Pacific?;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 4936912073; Occurrence Remarks: Need Species ID;; Coordinate Uncertainty in Meters: 38.00000.

GBIFID: 4945852870; Occurrence Remarks: Photographed as found in Willow Road, Laguna Canyon Wilderness Park. Uploaded as a separate observation for Kangaroo Rat;; Coordinate Uncertainty in Meters: 77.00000.

GBIFID: 4946672209; Occurrence Remarks: Successfully relocated from a neighbors driveway with pets, to a nearby area away from homes. This particular species is extra venomous to dogs.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 4952932979; Occurrence Remarks: Laguna Coast Wilderness;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4952380944; Occurrence Remarks: Dead. Run over by maintenance truck?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2242872257; Occurrence Remarks: Found upturned under a stick. Looked like it just died.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4954755949; Occurrence Remarks: Really not sure if this is a rattlesnake. It was dark and I couldnt see much. It did not rattle even though I was within 15 feet.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4982267290; Occurrence Remarks: Found beneath the OC Parks rattlesnake warning sign, of all places... Intersection of Bommer Ridge and Moro Ridge trails, Laguna Coast Wilderness;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4981988732; Occurrence Remarks: Juvenile found resting motionless near middle of a fire road. Slithered away slowly when approached. Willow Canyon Road, Laguna Coast Wilderness;; Coordinate Uncertainty in Meters: 113.00000.

GBIFID: 4993832189; Occurrence Remarks: This was a young snake - maybe 12 long and tiny little rattle button. It was laying in the middle of the trail and struck towards my foot, with no sound or warning. Scared me half dead, but thankful it missed my foot/leg! Half of Irvine may have heard my scream. ≡ƒÿé;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2244302506; Occurrence Remarks: Found under wheelbarrow;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5008149526; Occurrence Remarks: Not sure on ID;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2251913464; Occurrence Remarks: fighting for hunting grounds;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2252011094; Occurrence Remarks: Caspers Wilderness Park;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5087382210; Occurrence Remarks: Tail is different from Kingsnake;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5108517266; Occurrence Remarks: Fast little bugger! About 10ΓÇ¥ long;; Coordinate Uncertainty in Meters: 2515.00000.

GBIFID: 5134072602; Occurrence Remarks: Juvenile. High of 57 degrees today 4/2/25. Photo taken by my dad.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 5133206043; Occurrence Remarks: 80F 2ΓÇÖ approx;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5133646012; Occurrence Remarks: Very small (like 12-16ΓÇ¥ in length) for a rattlesnake and tiny rattle at end of the tail but most definitely looked like a Western Rattlesnake. Likely young. Moved quickly from the sunny trail to the bushes as we approached on the trail.;; Coordinate Uncertainty in Meters: 91.00000.

GBIFID: 5133731682; Occurrence Remarks: When I stepped away from it, it fled and rattled;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5141119888; Occurrence Remarks: While on a hike at the bottom of Santa Rosa Plateau, I spotted this rattlesnake. The weather was crisp at about 65 degrees, which made it odd to see the rattlesnake out on the path. It was the biggest rattlesnake I have seen in this area, which is loaded with different snake species. Usually red racer snakes will appear on the trail as well as lizards. I assume the population is very healthy. I watched this snake sit there for a while before noticing me, then took off into the shrubs. It was about 5 feet long and 4 inches thick.;; Coordinate Uncertainty in Meters: 12377.00000.

GBIFID: 5154069135; Occurrence Remarks: Sunny and hot day, found in a hole right next to the path.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572328977; Occurrence Remarks: It is some sort of snake probably a western king or a common rattlesnake. Any one who thinks that they know what it is please confirm what you think in the comments. Thanks;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 2283091790; Occurrence Remarks: A very dead little rattlesnake. About a foot long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168119291; Occurrence Remarks: After rattling off the trail, it hid behind the fence post.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5167289069; Occurrence Remarks: Young specimen. Photo of tail section only.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5167562664; Occurrence Remarks: ~2 / 2.5 foot cutie;; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.638911, -116.7356: : 5/20/2025: california_every_reptile: 20 May 2025 :

GBIFID: 5199008966; Occurrence Remarks: Nice little guy, I saw on my first night back in Murrieta,Ca..was very happy. About 1-1/2 ft.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5198864168; Occurrence Remarks: Successfully relocated away from neighbors patio.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2294568451; Occurrence Remarks: Probably C. o. helleri.;; Coordinate Uncertainty in Meters: 2914.00000.

GBIFID: 2294570448; Occurrence Remarks: Juvenile seen stuck in drainage ditch. Safely removed and relocated a hundred or so feet into a rock outcropping. Had full rattle, with 3 beads total;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 3067628594; Occurrence Remarks: Spotted crossing the road. Pulled over, and it proceeded to curl up near opening to storm drain. Watched it for a few minutes in the same spot.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5231772812; Occurrence Remarks: Is this the southern Pacific Rattlesnake?;; Coordinate Uncertainty in Meters: 3148.00000.

GBIFID: 1269559136; Occurrence Remarks: Rattlesnake seen on Hillview Park trail, Aliso Viejo.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2444963088; Occurrence Remarks: Rattlesnake observed in Niguel Botanical Preserve;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 2447928195; Occurrence Remarks: Observed rattlesnake remains on side of San Diego Creek trail.;; Coordinate Uncertainty in Meters: 130.00000.

GBIFID: 2456527529; Occurrence Remarks: Observed Rattlesnake crossing Aliso Canyon Road from Aliso Creek side toward Meadows trail. Unfortunately unable to obtain better quality close-up images to support identification.;; Coordinate Uncertainty in Meters: 126.00000.

GBIFID: 2465242275; Occurrence Remarks: On this day was 95 F (35C). The snake took a bath under leaking water connection...;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 2579326026; Occurrence Remarks: A baby rattlesnake relocated from homes.;; Coordinate Uncertainty in Meters: 199.00000.

GBIFID: 2611342768; Occurrence Remarks: I was about to take a picture of a bee plant when I hear his rattle. I jumped back and took a few pictures of it before it disappeared in the foliage.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 2626338846; Occurrence Remarks: She was a beautiful smaller specimen under a rock in a dry stream bed. A little on the small side in length and girth, with dark brown blackish scales and sandy rings. Slid slowly away to another bush to watch us pass.;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 4846780490; Occurrence Remarks: Bad picture, but i think it should be this one;; Coordinate Uncertainty in Meters: 1904.00000.

GBIFID: 2634104339; Occurrence Remarks: Found inside a rodent bait box. Stomach seemed to be empty. Relocated into a grassy field nearby away from people.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 1453324767; Occurrence Remarks: Dead neonate so pac found in drainage canal. Signs of trauma to the mouth.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2802642120; Occurrence Remarks: In Blue;; Coordinate Uncertainty in Meters: 240.00000.

GBIFID: 2803123060; Occurrence Remarks: Tiny rattle. Found just next to the trail.;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2802766121; Occurrence Remarks: Big Green. Crossed the trail. Parking lot was still visible.;; Coordinate Uncertainty in Meters: 108.00000.

GBIFID: 2826347133; Occurrence Remarks: Bolsa Chica;; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.535525, -117.146907: : 4/2/2017: NHMLA Community Science Program: 2 Apr 2017 :
GBIFID: 1457603724; Occurrence Remarks: Observation and photo by Wendy Miller, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 2851200296; Occurrence Remarks: Definitely either a large southern pacific or a red diamond rattlesnake;; Coordinate Uncertainty in Meters: 2915.00000.

GBIFID: 3455205789; Occurrence Remarks: Either sopac or red diamond;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4424140354; Occurrence Remarks: Relaxing in its burrow during the hot part of the day;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 1457640457; Occurrence Remarks: Weather was sunny and about 70 degrees. This was my first hike in this area. This is the only snake we saw during our 8 hour hike. It was in a riparian area.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500240108; Occurrence Remarks: On bicycle route through Camp Pendleton.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2856866536; Occurrence Remarks: GoPro photo from morning bike ride.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 2860155274; Occurrence Remarks: Shiny snake;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2860055326; Occurrence Remarks: First saw specimen mating. Wasnt able to get a photo of that and did not want to disturb them. Photos taken after the couple parted ways.;; Coordinate Uncertainty in Meters: 108.00000.

GBIFID: 2859990407; Occurrence Remarks: Audio included;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 2868164814; Occurrence Remarks: Little rattler found walking down the trail of Santa Rosa plateau.;; Coordinate Uncertainty in Meters: 338.00000.

GBIFID: 2883011194; Occurrence Remarks: time adjusted +1hr to correct time from camera for DST;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 2988697845; Occurrence Remarks: Observed Southern Pacific Rattlesnake on trailside.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 2992814066; Occurrence Remarks: Observed Southern Pacific Rattlesnake cross Bommer Pass trail.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 2992777089; Occurrence Remarks: Observation of track left by Southern Pacific Rattlesnake observed crossing Bommer Pass trail.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1571144324; Occurrence Remarks: Snake was in the road and I moved it to the side where it was headed...;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1572363504; Occurrence Remarks: The snake was medium-sized, but only the end was seen. The scale patterns were dark, with alternating brown and dark brown blotches. The rattle at the end defined this to be a rattler. It slithered its way through the dry, barren Seasonal Grassland.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1580512166; Occurrence Remarks: Souther Pacific Western Rattlesnake, Crotalus viridis helleri, 042713, Starr Ranch;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 3068103915; Occurrence Remarks: was under a coverboard. flicked its tongue, but did not move until the board was placed down. clearly had a meal in it. duplicate of https://www.inaturalist.org/observations/71774891;; Coordinate Uncertainty in Meters: 28957.00000.

Los Angeles, California: 33.438585, -118.498053: : 4/3/2021: Christy Pattengill-Semmens: 3 Apr 2021 :

GBIFID: 3079752717; Occurrence Remarks: Saw the California Ground Squirrel, then realized there should be a rattler.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3090817123; Occurrence Remarks: On trail to eagle rock within 1/2 mile of trailhead;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3096993743; Occurrence Remarks: It was no more than 16 inches.;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 4937085669; Occurrence Remarks: Big oneΓÇöpossible 4-footer!;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3109163627; Occurrence Remarks: Finally overcame my fears and got close to a rattlesnake. It rattled super loud when i got close. It was fat and long, seemed like it had just eaten itΓÇÖs prey.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 1024184050; Occurrence Remarks: Southern Pacific Rattlesnake seen while mountain biking in Laguna Wilderness Park.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1024184229; Occurrence Remarks: Southern Pacific Rattlesnake in the middle of the trail while mountain biking. I safely got him off the trail.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3112806049; Occurrence Remarks: White rattle was visible.;; Coordinate Uncertainty in Meters: 227.00000.

GBIFID: 3112916436; Occurrence Remarks: Dead by the side of the trail. Maybe a PCT hiker over-reacted and squished it...;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3112429737; Occurrence Remarks: Did not rattle;; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.576579, -116.570947: : 5/3/2021: Sendy Hern├índez Orellana Barrows: 3 May 2021 :

GBIFID: 1671726403; Occurrence Remarks: Sunning itself next to curb at a gas pump.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1024217963; Occurrence Remarks: Juvenile.;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 3333082106; Occurrence Remarks: One of two large rattlesnakes within a few hundred feet of one another.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3333153110; Occurrence Remarks: One of two large rattlesnakes within a few hundred feet of one another.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1806361850; Occurrence Remarks: Crotalus helleri is treated as a distinct species, occasionally;; Coordinate Uncertainty in Meters: 7200.00000.

GBIFID: 3391315873; Occurrence Remarks: Hiking in a dry riverbed near Vail Lake with lots of brush. Not smart! This poor snake almost got stepped on. The adrenaline rush of hearing the rattling was unforgettable. Now they call me Snakegirl. Counted 8 rattles on tail. Southern Pacific Rattlesnake (Crotalus oreganus ssp. helleri) Crotalus helleri is a pit viper subspecies found in southwestern California and south into Baja California, Mexico. Rattlesnakes are typically described as poisonous, but they are actually venomous. A poisonous snake is one that is harmful to eat. A venomous snake injects dangerous venom into its victim. Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. Leslie Anthony. Snakebit: Confessions of a Herpetologist. Greystone Books, 2008. Guide to the Amphibians and Reptiles of California Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3408227744; Occurrence Remarks: Juvenile, probably run over by a bike on a paved trail.;; Coordinate Uncertainty in Meters: 122.00000.

San Diego, California: 33.410882, -117.202612: : 3/26/2026: christiane201: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.568275, -117.801222: : 8/25/2025: mudd: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.420886, -116.678913: : 7/5/2026: Jody Cope: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 557.00000.

Orange, California: 33.556733, -117.797325: : 8/31/2025: Aimee Halligan: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.600496, -116.616179: : 8/24/2025: california_every_reptile: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Orange, California: 33.571453, -117.762283: : 3/29/2026: iluvnudis: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 19.00000.

San Diego, California: 33.404603, -117.58442: : 8/2/2025: Ruby: 2 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.606492, -117.758163: : 9/6/2025: autumnismeh: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Orange, California: 33.6167, -117.622733: : 7/14/2026: sirforthwind: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.36684, -117.171709: : 7/15/2026: Stephanie Crawford: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Orange, California: 33.703067, -117.647864: : 12/17/2025: Elijah S.: 17 Dec 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.402672, -117.59063: : 7/22/2026: Daniel: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: DOR just minutes prior to my arrival on the road. Picture shown moved off to the shoulder. 20-22 in length.; Coordinate Uncertainty in Meters: 28957.00000.

Orange, California: 33.767117, -117.678633: : 4/2/2026: Jason Cerulli: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 192.00000.

Occurrence Remarks: Occurrence Remarks: Two male southern pacific rattlesnakes performing a mating dance; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.022453, -116.988875: : 11/23/2025: epfodeb: 23 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.886468, -117.727662: : 7/19/2026: juliamarkey: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 109.00000.

Riverside, California: 33.9009, -117.196198: : 6/8/2025: Lucas Ramirez: 8 Jun 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: Two feet off the trail, watch your step, folks, and stay on the trails!; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 33.963597, -118.453797: : 8/3/2024: ritchiemeza: 3 Aug 2024 ; Coordinate Uncertainty in Meters: 12.00000.

San Bernardino, California: 34.040665, -117.044546: : 5/3/2024: applepi0: 3 May 2024 ; Coordinate Uncertainty in Meters: 4132.00000.

Orange, California: 33.917224, -117.838838: : 5/24/2024: breckencreatures: 24 May 2024 ; Coordinate Uncertainty in Meters: 179.00000.

Occurrence Remarks: 8/12/2024. Found on a hike with my good friend kb :); Coordinate Uncertainty in Meters: 415.00000.

Los Angeles, California: 34.019939, -118.933745: : 5/10/2024: Liam Bertrand: 10 May 2024 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 33.785723, -118.408184: : 9/12/2025: Drew: 12 Sep 2025 ; Coordinate Uncertainty in Meters: 149.00000.

Riverside, California: 33.967917, -117.010285: : 9/14/2025: Lucas Ramirez: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.790058, -116.742274: : 9/13/2025: herphendrie: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.758714, -116.720314: : 3/27/2026: Alison Kreager: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.895177, -116.876263: : 11/23/2025: Logan Barrios: 23 Nov 2025 ; Coordinate Uncertainty in Meters: 132.00000.

GBIFID: 3903133526; Occurrence Remarks: Alive in road;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 33.732086, -118.32109: : 3/22/2026: jsoria: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 30.00000.

Orange, California: 33.824928, -117.75443: : 5/31/2026: Rylee Cendejas: 31 May 2026 ; Coordinate Uncertainty in Meters: 245.00000.

Orange, California: 33.915713, -117.838403: : 4/15/2026: Kate W.: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.802133, -117.751543: : 4/14/2026: maddy_wilkens: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 41.00000.

Orange, California: 33.794395, -117.745202: : 4/17/2026: sgibbard: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Riverside, California: 33.89928, -116.673072: : 4/19/2026: Michael Zelun Lee: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Sorry for the slight blur, the snake was moving quickly; Coordinate Uncertainty in Meters: 1.00000.

Orange, California: 33.827758, -117.757283: : 4/24/2026: yuccabomberian: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: While walking to the Marina Del Rey, CA jetty, saw this snake. Is it a rattlesnake?; Coordinate Uncertainty in Meters: 985.00000.

San Bernardino, California: 34.020424, -116.997054: : 5/22/2026: Andreas Bita: 22 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.020419, -116.997263: : 5/22/2026: jim_blauth: 22 May 2026 ; Coordinate Uncertainty in Meters: 115.00000.

Occurrence Remarks: Revisit ; in June of 2025 , one was observed at this site .; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.038147, -116.93651: : 5/18/2026: Logan Barrios: 18 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.817212, -117.76908: : 5/23/2026: jakefnorman: 23 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.041197, -118.754143: : 5/25/2026: Heather Dawnstar Sabin: 25 May 2026 :
Occurrence Remarks: Looked young. Maybe 3 long.; Coordinate Uncertainty in Meters: 61.00000.

Orange, California: 33.797432, -117.720255: : 5/22/2026: aquaticmarlon: 22 May 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 33.743845, -118.386041: : 5/29/2026: lexibakos: 29 May 2026 ; Coordinate Uncertainty in Meters: 280.00000.

Riverside, California: 33.776678, -116.67827: : 5/26/2026: David: 26 May 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Orange, California: 33.920189, -117.835152: : 7/1/2026: ppepprerde: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 182.00000.

Riverside, California: 34.018989, -116.160811: : 4/8/2025: johngilardi: 8 Apr 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.835037, -117.738663: : 2/9/2026: Max Watkins: 9 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: First of 2026; Coordinate Uncertainty in Meters: 28902.00000.

Orange, California: 33.71844, -117.671693: : 2/7/2026: Collin Dennis: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Riverside, California: 33.860298, -117.182678: : 2/12/2026: Lucas Ramirez: 12 Feb 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

San Bernardino, California: 34.033606, -117.043087: : 2/13/2026: swafford: 13 Feb 2026 ; Coordinate Uncertainty in Meters: 8879.00000.

Riverside, California: 33.970621, -117.064516: : 2/15/2026: Lucas Ramirez: 15 Feb 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.980619, -117.137946: : 2/16/2026: Lucas Ramirez: 16 Feb 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Orange, California: 33.76113, -117.67392: : 2/27/2026: sagevinje: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.8292, -117.7599: : 2/27/2026: Paul Carter: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 30.00000.

San Bernardino, California: 34.041702, -117.094713: : 3/1/2026: Eric Schniter: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.04291, -117.09479: : 3/1/2026: Eric Schniter: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Orange, California: 33.723195, -117.661686: : 3/1/2026: Melissa Pearson: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: D.O.R.; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.843538, -117.73362: : 3/4/2026: Max Watkins: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.925798, -116.895267: : 2/27/2025: Logan Barrios: 27 Feb 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.811748, -117.767983: : 3/5/2026: yessicuhhh: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Riverside, California: 33.887655, -117.175869: : 3/6/2026: Lucas Ramirez: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.997732, -117.024714: : 3/6/2026: Lucas Ramirez: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.874775, -117.088021: : 3/10/2026: markc666: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Los Angeles, California: 34.039788, -118.704075: : 3/11/2026: adrianna_pohlhaus: 11 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.887098, -117.169106: : 3/13/2026: Lucas Ramirez: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: saw 3 different rattlesnakes today; Coordinate Uncertainty in Meters: 1103.00000.

Los Angeles, California: 34.038836, -118.801888: : 2/6/2026: dvanrhee: 6 Feb 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.003442, -118.048924: : 5/11/2026: brooks77: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.709575, -118.058525: : 10/29/2025: William Walker: 29 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.861653, -117.152702: : 5/25/2025: Lucas Ramirez: 25 May 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 3773400165; Occurrence Remarks: Baby at the nature center;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 33.732455, -118.317308: : 4/26/2026: jsoria: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 58.00000.

Los Angeles, California: 33.730637, -118.31672: : 4/29/2026: CJ Reese: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Orange, California: 33.709575, -117.620955: : 4/30/2026: Ron Vanderhoff: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 33.739012, -118.349167: : 5/1/2026: laharborfarmer: 1 May 2026 ; Coordinate Uncertainty in Meters: 52.00000.

Los Angeles, California: 33.971595, -118.43943: : 5/2/2026: fonxo: 2 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 33.923214, -117.706188: : 4/30/2026: jackiebaum: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.920257, -117.827111: : 4/9/2026: jackiebaum: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: slithered across the path and quickly found a sunny patch under a lemonade berry ≡ƒÑ░; Coordinate Uncertainty in Meters: 2792.00000.

Riverside, California: 33.893666, -117.113852: : 5/8/2026: Logan Barrios: 8 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 34.011574, -116.882232: : 5/1/2026: Lucas Ramirez: 1 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.043394, -118.865742: : 5/7/2026: phoebep: 7 May 2026 ; Coordinate Uncertainty in Meters: 8761.00000.

Los Angeles, California: 34.034111, -118.810495: : 5/9/2026: blomenick: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 33.9706, -118.438004: : 5/10/2026: xochil (they/elle): 10 May 2026 ; Coordinate Uncertainty in Meters: 11.10000.

Occurrence Remarks: almost cost us 5,000$ and 2 months in jail, a warning to other herpers when poking around lake Mathews; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.790355, -117.565609: : 2/7/2026: jalopy: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 33.779329, -118.337248: : 3/31/2026: Jiovanny Celis: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Riverside, California: 33.77496, -116.708488: : 3/27/2026: Cameron W Barrows: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Orange, California: 33.821795, -117.775596: : 3/24/2026: Aidong X Wetherington: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Riverside, California: 33.999878, -116.145997: : 4/2/2026: lotsaplants: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Riverside, California: 33.758713, -116.720245: : 3/27/2026: Cameron W Barrows: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.726728, -118.113322: : 4/7/2025: nlimon: 7 Apr 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 34.016416, -118.712377: : 5/15/2025: nemoreader: 15 May 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.037793, -118.670551: : 5/31/2025: nemoreader: 31 May 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 33.937725, -117.69767: : 5/2/2025: Lucas Ramirez: 2 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.851938, -117.000263: : 4/12/2025: Lucas Ramirez: 12 Apr 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Orange, California: 33.802619, -117.754571: : 9/18/2025: maddy_wilkens: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 43.00000.

Occurrence Remarks: Saw it crossing the trail of a preserve.; Coordinate Uncertainty in Meters: 6.00000.

Orange, California: 33.920636, -117.833622: : 9/21/2025: sgibbard: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 44.00000.

Riverside, California: 33.860284, -117.000315: : 9/22/2025: Lucas Ramirez: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: She was behaving like a BoaΓÇª turning into a ball even after I disturbed her refusing to show head or tail≡ƒÿé I have never seen that; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: It was all coiled up in an old burrow. It was very young and about the size of my fist when coiled.; Coordinate Uncertainty in Meters: 90.00000.

Occurrence Remarks: It was laying still flicking its tongue in the middle of the trail.; Coordinate Uncertainty in Meters: 88.00000.

Riverside, California: 33.899292, -116.679537: : 9/27/2025: Lucas Ramirez: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.843012, -117.738358: : 5/11/2026: vcl_herping: 11 May 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Riverside, California: 33.808955, -116.775048: : 5/12/2026: Isaiah Woodard: 12 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.748413, -117.702767: : 5/13/2026: gingey: 13 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.885523, -117.70781: : 4/4/2026: Dayne: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 34.000518, -116.147224: : 3/16/2026: Michelle: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 238.00000.

Orange, California: 33.723372, -117.651754: : 3/18/2026: maddy_wilkens: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 33.737318, -118.348847: : 3/15/2026: Thomas Lacy: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Orange, California: 33.802621, -117.752201: : 3/23/2026: maddy_wilkens: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Juvenile; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.801827, -117.755105: : 3/24/2026: maddy_wilkens: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 66.00000.

Riverside, California: 34.023438, -116.14881: : 3/25/2026: ebrandon: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 803.00000.

Occurrence Remarks: Slithered back into bushes as other hikers approached and made a loud rattling noise as they passed by.; Coordinate Uncertainty in Meters: 1049.00000.

Los Angeles, California: 33.743838, -118.380883: : 3/23/2026: lexibakos: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.758675, -116.720344: : 3/27/2026: Pete Schwartz: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.77499, -116.708482: : 3/27/2026: quandary: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

San Bernardino, California: 34.011673, -117.123689: : 3/29/2026: audreymaier: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 60.00000.

Los Angeles, California: 33.779077, -118.337198: : 3/31/2026: Thomas Lacy: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 48.00000.

Riverside, California: 33.768025, -116.710037: : 4/2/2026: pavelbykau: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.725323, -116.706496: : 4/3/2026: Aaron Tupac: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.751812, -116.759262: : 4/5/2026: sambreggie: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: MY FIRST WILD SNAKE. I AM SO HAPPY. and what a great first snake it is; Coordinate Uncertainty in Meters: 555.00000.

San Bernardino, California: 33.936575, -117.645811: : 4/6/2026: Jenna Carpenter: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Baby; Coordinate Uncertainty in Meters: 57.00000.

Orange, California: 33.802793, -117.754172: : 4/7/2026: maddy_wilkens: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Los Angeles, California: 33.985042, -117.929597: : 4/7/2026: Maria Coy: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 33.933245, -117.634758: : 4/8/2026: pajricha: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Riverside, California: 33.989772, -116.164092: : 4/1/2026: mshoberg: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Riverside, California: 33.921836, -117.650558: : 4/9/2026: Jenna Carpenter: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.803906, -117.753781: : 4/8/2026: maddy_wilkens: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.793445, -117.741212: : 4/11/2026: gingey: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 19.00000.

San Bernardino, California: 34.043117, -117.05838: : 10/10/2023: jenner42: 10 Oct 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.877787, -117.090711: : 10/5/2025: packardr90: 5 Oct 2025 ; Coordinate Uncertainty in Meters: 31.00000.

Los Angeles, California: 33.744153, -118.380642: : 9/6/2025: Nicholas Rocha: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 23.00000.

Riverside, California: 33.925197, -116.892322: : 3/19/2025: Logan Barrios: 19 Mar 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 33.9472, -117.728712: : 11/13/2025: pand: 13 Nov 2025 ; Coordinate Uncertainty in Meters: 5232.00000.

Los Angeles, California: 33.73588, -118.224426: : 12/7/2025: herphendrie: 7 Dec 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 33.738092, -118.35038: : 6/18/2025: jluc10: 18 Jun 2025 ; Coordinate Uncertainty in Meters: 18.00000.

San Bernardino, California: 34.029571, -117.705193: : 11/13/2025: pand: 13 Nov 2025 ; Coordinate Uncertainty in Meters: 4478.00000.

Los Angeles, California: 34.039887, -117.896095: : 10/13/2025: pand: 13 Oct 2025 ; Coordinate Uncertainty in Meters: 3431.00000.

Orange, California: 33.869437, -117.798534: : 3/25/2025: Pamela Taylor: 25 Mar 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: Cool to see out here, would have expected Ruber; Coordinate Uncertainty in Meters: 28930.00000.

San Bernardino, California: 34.035976, -116.948047: : 10/12/2025: hummingbirdpirate: 12 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.762235, -117.755769: : 7/30/2025: wyattjbedard: 30 Jul 2025 ; Coordinate Uncertainty in Meters: 191.00000.

Occurrence Remarks: SohPack.; Coordinate Uncertainty in Meters: 28902.00000.

Los Angeles, California: 33.969566, -118.448085: : 3/1/2025: azuwu: 1 Mar 2025 ; Coordinate Uncertainty in Meters: 3206.00000.

Riverside, California: 33.967355, -117.110895: : 7/31/2025: Lucas Ramirez: 31 Jul 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.882694, -117.190506: : 7/4/2025: Lucas Ramirez: 4 Jul 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.816216, -117.052607: : 7/4/2025: Lucas Ramirez: 4 Jul 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Los Angeles, California: 33.968195, -118.443442: : 6/6/2026: Roberto Daniel Avila: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Los Angeles, California: 33.969307, -118.441322: : 6/6/2026: Roberto Daniel Avila: 6 Jun 2026

Los Angeles, California: 33.965378, -118.448254: : 6/6/2026: Roberto Daniel Avila: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Riverside, California: 33.826144, -116.778885: : 6/7/2026: klenkes: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 334.00000.

Los Angeles, California: 34.046084, -118.930233: : 6/11/2026: jasmine_sees: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Riverside, California: 33.808544, -116.776053: : 6/3/2026: Juliana Granados: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 247505.00000.

Occurrence Remarks: Prado Basin, Chino; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.775008, -116.67619: : 6/12/2026: Rod: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.802083, -116.772245: : 6/4/2026: aviriri: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 1408.00000.

Riverside, California: 33.774988, -116.676138: : 6/12/2026: desertjules: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Riverside, California: 33.912788, -117.652726: : 7/20/2026: trailherper: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

San Bernardino, California: 33.97468, -117.655043: : 7/20/2026: trailherper: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.775058, -116.67623: : 6/12/2026: Sue Shigenaga: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.04385, -118.753045: : 3/19/2026: gmilldq: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 33.945584, -117.760979: : 7/9/2026: trailherper: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

San Bernardino, California: 33.910749, -117.660391: : 7/9/2026: trailherper: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.838357, -116.763754: : 6/16/2026: Christian Schwarz: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.806006, -116.73236: : 6/16/2026: Dean Lyons: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 93.00000.

Los Angeles, California: 34.044589, -118.934277: : 6/11/2026: johnnyab: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Occurrence Remarks: Chino Hills, CA; Coordinate Uncertainty in Meters: 28902.00000.

Los Angeles, California: 33.97443, -118.434412: : 6/25/2026: rick_p: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Riverside, California: 33.809001, -116.77495: : 6/14/2026: n8trgirl: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 76.00000.

Los Angeles, California: 33.7312, -118.354677: : 6/28/2026: ilan_: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

San Bernardino, California: 33.953675, -117.737822: : 9/27/2025: alissa rivas: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.829312, -117.638925: : 10/11/2025: Michael Zelun Lee: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 33.951153, -117.703652: : 4/12/2025: cherithebee: 12 Apr 2025 ; Coordinate Uncertainty in Meters: 1048.00000.

San Bernardino, California: 33.917883, -117.700242: : 3/31/2026: bibmik: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 33.711023, -118.137587: : 4/7/2025: nlimon: 7 Apr 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3455388117; Occurrence Remarks: Must have been a young snake since it looked small. Diamond pattern on back. Found in a cool, rocky setting.;; Coordinate Uncertainty in Meters: 6532.00000.

GBIFID: 3759840924; Occurrence Remarks: Huge black rattlesnake in the bushes at the schabarum trail.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3759205915; Occurrence Remarks: Juvenile, about 35 cm long, one rattle;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3759182064; Occurrence Remarks: First snake of the night and the first snake of 2022;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1838353044; Occurrence Remarks: DOR on the main entrance road.;; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.018634, -118.047718: : 4/4/2022: Boaz Benaiah Solorio: 4 Apr 2022 :

San Bernardino, California: 34.041478, -116.942322: : 4/26/2022: Jacqui Ver Loren van Themaat: 26 Apr 2022 :
GBIFID: 3764341131; Occurrence Remarks: About 12inches long.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3764106191; Occurrence Remarks: Unsure about the ID, IΓÇÖm not a local. This is my best guess, any help would be appreciated!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1839270053; Occurrence Remarks: Southern Pacific Rattlesnake on Fuller Ridge of San Jacinto.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 1839270060; Occurrence Remarks: Southern Pacific Rattlesnake on the trail near the trailhead of Fuller Ridge of San Jacinto approach.;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 3773414033; Occurrence Remarks: juvenile;; Coordinate Uncertainty in Meters: 6000.00000.

GBIFID: 3802479493; Occurrence Remarks: DOR :(;; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.80985, -116.766678: : 7/2/2026: jmenzie: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1065599974; Occurrence Remarks: I found this large rattler in the middle of the road that led through the park, it was relocated by park staff to a less people-dense area shortly afterwards(hence the trash bin). Specimen was between roughly 3-4.5 ft and appeared to be female due to tail size. Rattle had a decent collection of segments.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1841316838; Occurrence Remarks: Partially eaten remains.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3860507825; Occurrence Remarks: Observed sunning itself on the dirt road around 5:55 pm;; Coordinate Uncertainty in Meters: 49.00000.

GBIFID: 1847515452; Occurrence Remarks: Small snake about 0.40 M, in late afternoon, not moving on the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3873470900; Occurrence Remarks: DOR. Appears to have been purposefully killed.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3873656310; Occurrence Remarks: Photo from a friend.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3873121468; Occurrence Remarks: Deb Nelson saved me from sitting down just a foot away from this young rattlesnake! This is my usual lunch boulder at Saddle Junction. I had placed my pack and two water bottles there, and was getting ready to sit down when Deb called out STOP!!!, and then Move back!. I always obey when people give me commands like that. (:-) My blue water bottle is 24 cm (9.5 inches) tall, so my hand was just 32 cm (12 inches) away from the rattlesnake when I put it down. Debs post has better pix of the rattlesnake: https://www.inaturalist.org/observations/127223392 We quickly decided to go to the alternate boulder lunch spot on the other side of Saddle Junction. (:-) We checked 30 minutes later, as we left, and the rattlesnake was gone. I think Ill change my default lunch spot for a while there, since there are too many nooks and crannies at my first choice.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3892429999; Occurrence Remarks: Very dark, next to the trail. I have only seen one other rattlesnake this dark and it was in 2013 on the Marion Mountain trail on the other side of San Jacinto.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3902704555; Occurrence Remarks: On the crawl, 77F and overcast;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 1088927480; Occurrence Remarks: Small size snake;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3903002745; Occurrence Remarks: First photo is the one from 10:14pm. The next two were from 8:58pm and about 20 m down trail. Appear to me to be the same snake.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3947424565; Occurrence Remarks: Best looking helleri IΓÇÖve ever seen. It looked even more blue in person;; Coordinate Uncertainty in Meters: 398.00000.

GBIFID: 3947640159; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1880633620; Occurrence Remarks: Three feet away from me, I see the leaf litter beside me moving. And shoot, my legs trembled, but thankfully my head was sharp and clear, so I stayed clear of any threats. Phew! The scale patterns were dark, with alternating brown and dark brown blotches. The head had the classic diamond shape, seen as it slithered in the Riparian Forest.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4067646024; Occurrence Remarks: Date might be slightly off, but it was within a week of that date. It was found at a gorge in/near Arizona but it was not Grand Canyon. Unfortunately, I do not remember the name of the location;; Coordinate Uncertainty in Meters: 377273.00000.

GBIFID: 4076398612; Occurrence Remarks: No idea what type of rattlesnake this is. I might not have gotten enough in the photo to tell. I was so busy with a green butterfly that I almost missed it. It was pretty much in the brush before I saw it. Still, super happy to find the rattlesnakes are waking up!;; Coordinate Uncertainty in Meters: 110.00000.

Los Angeles, California: 34.026896, -118.422068: : 4/10/2023: Holly Crawford Thompson: 10 Apr 2023 :

GBIFID: 4096605719; Occurrence Remarks: IΓÇÖm leaning gopher as the eyes were round.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4102593944; Occurrence Remarks: Maybe a Southern Pacific? Love to see rattlesnakes, but just canΓÇÖt identify them!;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1092906235; Occurrence Remarks: This snake was found apparently sleeping in blue, eyes were already a deep opaque blue. After my bumbling around the snake noticed me, gave a little rattle, and retreated further into the de.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4116437074; Occurrence Remarks: Curled up in Weir Canyon. The morning was overcast with temps in the 50s.;; Coordinate Uncertainty in Meters: 258.00000.

GBIFID: 4121124520; Occurrence Remarks: Tiny;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4133981057; Occurrence Remarks: In situ; looked a bit skinny;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4138322371; Occurrence Remarks: Large snake with black and tan pattern. White and black stripe in towards the tail.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4138350682; Occurrence Remarks: I heard a little girl in the distance say rattlesnake! and that is how I came across this individual!;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1099970668; Occurrence Remarks: Originally found in crook of tree about 3 feet up near a dead western fence lizard (ID #1720047), likely its prey item. It fell out of the tree and slithered into branches and poison oak;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4162248145; Occurrence Remarks: Young rattler frantically trying to get away from us, after my companion passed by it without seeing it.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4165366664; Occurrence Remarks: This beauty wasnΓÇÖt inclined to give up his/her spot in the shade, and I wasnΓÇÖt inclined to argue about it. Even though I was almost at the end of the trail, I went all the way back where I came from and hiked around.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1931527102; Occurrence Remarks: ~one year old, found under a large rock. *for Biol 324, I know this snake has already been uploaded, but sharing anyway;; Coordinate Uncertainty in Meters: 195.00000.

San Bernardino, California: 34.048195, -117.007064: : 7/8/2023: Jake Garcia (they/them): 8 Jul 2023 :

GBIFID: 1132409088; Occurrence Remarks: Moving across the trail.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.025922, -118.779757: : 7/1/2015: NHMLA Community Science Program: 1 Jul 2015 :
GBIFID: 1132409392; Occurrence Remarks: Observation and photo by Kali Malone.;; Coordinate Uncertainty in Meters: 18586.00000.

GBIFID: 4400248639; Occurrence Remarks: I was moving down the Devils Slide Trail at a fast pace, so just barely avoided stepping on this snake, screeching to a halt just two steps away. This caused the snake to immediately go up into the bushes. I was then only able to photograph the last half or so of the snake as it slithered away.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4407279660; Occurrence Remarks: This snake was about 3 ft. in length. Can any snake experts tell us approx. how old such a snake might be? How quickly do snakes grow to full size?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4407242122; Occurrence Remarks: Same snake as in Dons observation: https://www.inaturalist.org/observations/180845037 This appears to be the same snake I saw on 8/17/23, 300 m away, since it was the same size, with the same number of rattles: https://www.inaturalist.org/observations/179091776 This snake has been sighted in at least four other iNat posts in 2023 from this area! In addition, a runner who also saw this snake with us said he saw it in the upper Devils Slide Trail 10 days ago or so.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4414287414; Occurrence Remarks: Seen on the spring season Joshua Tree NABA butterfly count.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4424688764; Occurrence Remarks: The remains of a snake. Not sure what happened to it. The carcass smelled fresh, but several bones had already been exposed from creatures eating it.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4430693591; Occurrence Remarks: I dont know my snakes, so when I saw an unusually-patterned reptile in a hole alongside the trail, I thought Id encountered a new lizard. (It was probably the diameter of my thumb, so definitely a juvenile.) When I saw the head, I knew it was a snake. I thought snakes had poor sight, but as soon as this one saw/felt my presence, it absolutely dissolved into the hole--Ive never seen a snake move so quickly.;; Coordinate Uncertainty in Meters: 91.00000.

GBIFID: 4431287343; Occurrence Remarks: Hiding head;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 1143528285; Occurrence Remarks: About 1 meter long, sunning on trail in morning. Conqueror Trail in Forestal Reserve, near start of Portuguese Bend Reserve.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1143541238; Occurrence Remarks: Rattlesnake moving across an open area between the sage brush. About 1 meter long, and looks healthy. I hike in this area often, in the late afternoon, early evening. Best time to see snakes in this area is just before sunset.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1143542238; Occurrence Remarks: At neighbors house.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 1143542394; Occurrence Remarks: At neighbors house.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 1143548172; Occurrence Remarks: Small, about 35 cm long, came about 2 inches to being stepped on by partner on trail.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4528088575; Occurrence Remarks: Sunning on trail;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4596895502; Occurrence Remarks: Actual location within a few miles.;; Coordinate Uncertainty in Meters: 1270.00000.

GBIFID: 4597366397; Occurrence Remarks: Actual location within a few miles.;; Coordinate Uncertainty in Meters: 784.00000.

GBIFID: 4596905564; Occurrence Remarks: Actual location within a few miles.;; Coordinate Uncertainty in Meters: 287.00000.

San Bernardino, California: 34.011794, -117.122139: : 6/9/2013: Ross Massimiano, DVM: 9 Jun 2013 :

GBIFID: 4599999111; Occurrence Remarks: Heard hissing and rattling as well!;; Coordinate Uncertainty in Meters: 226.00000.

GBIFID: 4607082074; Occurrence Remarks: Male-male combat observed;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 2012963475; Occurrence Remarks: Baby snake along edge of trail. Shade, getting dark. Was a sunny day earlier. 6 ft from stream. Only 1.5ft long.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4851966994; Occurrence Remarks: Almost stepped on them while watching birds.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4855376526; Occurrence Remarks: This poor guy was deceased. Found on the road. Not sure if it was hit by a car or dropped by a bird. There are several marks that might be peck marks. When I rode my bike past a second time, it was gone. Assuming a scavenger hauled it off.;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 4855362255; Occurrence Remarks: dead juvenile Southern Pacific rattlesnake;; Coordinate Uncertainty in Meters: 195.00000.

San Bernardino, California: 34.022158, -117.186355: : 5/5/2024: Michael Zelun Lee: 5 May 2024 :

GBIFID: 4863793237; Occurrence Remarks: Snake found on hike around 12 pm on a sunny day;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 4863721916; Occurrence Remarks: An extremely large and very angry snake on the side of the trail this morning. I didnΓÇÖt think I was close enough to be threatening, but I got an earful. Full-on warning rattle (in photos 1 and 2 you can just see the blur from movement of the rattle). Not necessary. I didnΓÇÖt intend to get anywhere near.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 4863834492; Occurrence Remarks: This juvenile Southern Pacific Rattlesnake was in a puddle on the Santiago Creek Trail on a hot day. When it saw us, it slithered into the brush. Its rattle was small. Photo 9 shows its track underwater.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4867741307; Occurrence Remarks: Very well camouflaged. Coal Canyon;; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.758713, -116.720742: : 3/27/2026: quandary: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4872094328; Occurrence Remarks: A juvenile on the side of the trail.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4872590345; Occurrence Remarks: Pipeline Trail, Coal Canyon;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4872345557; Occurrence Remarks: Very chunky neonate. Likely born in fall 2023.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 4892244442; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4900898440; Occurrence Remarks: Limestone Canyon, Irvine Ranch Conservancy;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4901629726; Occurrence Remarks: I saw this deceased snake on the trail. When I flipped it a bit, I realized it was a southern Pacific.;; Coordinate Uncertainty in Meters: 2382.00000.

GBIFID: 4908015732; Occurrence Remarks: About 2 inches across. The front end is somewhere down the gopher hole.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4910655674; Occurrence Remarks: Souther Pacific Rattlesnake located in the Orange Hills proposed project area!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4919224567; Occurrence Remarks: Juvenile found at dusk;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 4919642499; Occurrence Remarks: Rattling at the dogs passing on the trail.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2238837697; Occurrence Remarks: Dead in stream, clearly killed by person;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4921624260; Occurrence Remarks: Adult;; Coordinate Uncertainty in Meters: 28902.00000.

Los Angeles, California: 34.038982, -118.454045: : 7/28/2011: NHMLA Community Science Program: 28 Jul 2011 :
GBIFID: 1211998106; Occurrence Remarks: Observation and photo by Lynn Phillips, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4945967615; Occurrence Remarks: In the tall grass between the trails. Juvenile with soft tail.;; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.952004, -116.641683: : 9/8/2024: california_every_reptile: 8 Sep 2024 :

GBIFID: 4950534318; Occurrence Remarks: rattlesnake of some sort!;; Coordinate Uncertainty in Meters: 284.00000.

GBIFID: 4950596763; Occurrence Remarks: Small baby snake;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4952716441; Occurrence Remarks: juvenile;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2242824245; Occurrence Remarks: This was on Ballona creek bike path near Lincoln. I know above shots miss tail and head but I thought I saw a small rattle on the tail. Are the markings above a sound basis to confirm identification?;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 4952828128; Occurrence Remarks: Joshua Tree National Park. Mojave Green? Or diamondback?;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4954452612; Occurrence Remarks: Juvenile. Approximately 9 inches.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1227748319; Occurrence Remarks: Juvenile with 3 rattles, dead on dirt road;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4954393063; Occurrence Remarks: Baby Sopac;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 4980508045; Occurrence Remarks: Found in mountains near moreno valley.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4980341721; Occurrence Remarks: this is for a CLASS.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4980601709; Occurrence Remarks: Crotalus oreganus spotted through a bush near Idyllwid;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2244244192; Occurrence Remarks: Baby rattlesnake on edge of trail. Curled in a ball and looked flat. Thought a horse stepped on it, but once it woke up it slowly went uphill. First time ever seen a rattlesnake on this trail. (lower trail);; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4994190253; Occurrence Remarks: 6 feet off pavement and completely flattened;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4936854127; Occurrence Remarks: Solstice Canyon;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5063589940; Occurrence Remarks: I wasnt sure if this rattlesnake was alive or not, although there was no sign of obvious injury. Its been in the 60s lately (probably in the 50s this morning when I saw it), so not common for it to be out and about. It was positioned in the middle of the trail much like it would be in warmer weather seeking the sun. Update: I went by the next day (1/31/2025) and it was gone. I looked around the area to see if a passerby removed it from the trail but I didnt see it. Hoping it was fine--if chilly--and headed back to its home.;; Coordinate Uncertainty in Meters: 87.00000.

GBIFID: 5087312776; Occurrence Remarks: Sonome Canyon, Chino Hills State Park;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5104529528; Occurrence Remarks: Either that or a Crotalus oreganus subspecies;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5104544667; Occurrence Remarks: Griffith Park;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5104665850; Occurrence Remarks: Griffith Park;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5108274320; Occurrence Remarks: Baby Rattlesnake;; Coordinate Uncertainty in Meters: 784.00000.

GBIFID: 5108390268; Occurrence Remarks: Griffith Park;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5133188722; Occurrence Remarks: Small rattle on the tail, I think he was ran over by a car :(. Roughly 78 F, sunny, found on the trail.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 5133331800; Occurrence Remarks: Baby found at dusk;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 5133704509; Occurrence Remarks: Did not rattle. Very calm energy. Despite warm temperatures, it stayed in the shadow on moist top soil.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1253304959; Occurrence Remarks: Very small, about 30 cm. Moved to hide at base of palm tree.;; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.935608, -116.8965: : 4/9/2025: jacobanderson-minshall: 9 Apr 2025 :

GBIFID: 5140301208; Occurrence Remarks: Found on a hike just as the sun started to come out in moderate weather. Seen in tall grass field likely warming up in the sun.;; Coordinate Uncertainty in Meters: 28930.00000.

Los Angeles, California: 33.962553, -117.91843: : 3/7/2016: NHMLA Community Science Program: 7 Mar 2016 :
GBIFID: 1262375805; Occurrence Remarks: Observation and photo by Larry Combs, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 193.00000.

Los Angeles, California: 33.961019, -117.919068: : 2/20/2016: NHMLA Community Science Program: 20 Feb 2016 :
GBIFID: 1262375848; Occurrence Remarks: Observation and photo by Larry Combs, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 137.00000.

GBIFID: 2283143747; Occurrence Remarks: Juvenile rattlesnake found dead on the side of Burma Road with at least two puncture wounds, though it wasnt clear if that happened before or after death. Photos and observation by S. Pauly.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2283142869; Occurrence Remarks: Photos and observation by S. Pauly.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5176866102; Occurrence Remarks: Found it dead on the side of the road. Probably a few weeks old.;; Coordinate Uncertainty in Meters: 189.00000.

GBIFID: 5176368734; Occurrence Remarks: baby rattle;; Coordinate Uncertainty in Meters: 112.00000.

GBIFID: 5176929638; Occurrence Remarks: Baby eating lizard;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5188422086; Occurrence Remarks: Rattlesnakes observed at three locations on the DevilΓÇÖs Slide trail today.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5187519954; Occurrence Remarks: Two snakes in the second photo;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5198326818; Occurrence Remarks: Found it inside of a fort. It was around 3 feet and did not rattle.;; Coordinate Uncertainty in Meters: 189.00000.

GBIFID: 5198446401; Occurrence Remarks: Young one ~35cm long;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5206757591; Occurrence Remarks: 65F ambient temperature; 54F was the low earlier;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2311341730; Occurrence Remarks: Dead on road...sorry for the dead snake pictures. I think the colors are just so pretty and I wasnΓÇÖt sure what species it was and was curious.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5231712406; Occurrence Remarks: Low quality photo, saw while bouldering, didnΓÇÖt approach to take better photo for obvious reasons;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1265583619; Occurrence Remarks: Found under the picnic table and on Lauras foot!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5231130914; Occurrence Remarks: Baby :);; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 1269542103; Occurrence Remarks: Neighbors discovered it laying still in the dappled shade of their backyard.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 2429413465; Occurrence Remarks: Kinda blurry image unfortunately;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2429628412; Occurrence Remarks: Very young - just a button on its tail!;; Coordinate Uncertainty in Meters: 20.00000.

Los Angeles, California: 34.025186, -118.475039: : 3/15/2008: NHMLA Community Science Program: 15 Mar 2008 :
GBIFID: 1273847722; Occurrence Remarks: Observation and photo by Eric Cleveland, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 2573803583; Occurrence Remarks: One of two rattlers I saw on the trail this fine early spring day at Schabarum Park.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2579234966; Occurrence Remarks: @gregpauly saw two mating Southern Pacific Rattlesnakes and called us over, but unfortunately by the time we got there theyd gone into a hole. Looks closely and there are two rattles here.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 2596203638; Occurrence Remarks: Observed a few hours ago. Juvenile Western Rattlesnake? Perhaps 6-7 long.;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 1323012870; Occurrence Remarks: OLYMPUS DIGITAL CAMERA;; Coordinate Uncertainty in Meters: 977.00000.

GBIFID: 2611190220; Occurrence Remarks: Now this is what you call a ΓÇ£snake in the grassΓÇ¥.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1453137467; Occurrence Remarks: Very small and lethargic (cool morning).;; Coordinate Uncertainty in Meters: 55.00000.

GBIFID: 2611300495; Occurrence Remarks: Coiled up on the side of hike path. Temperatures were near 80┬░ by early morning.;; Coordinate Uncertainty in Meters: 117.00000.

GBIFID: 891068982; Occurrence Remarks: Rattlesnake (foreground) and our Idyllwild cabin (background).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891068995; Occurrence Remarks: The rattlesnake I found just across the stream from the cabin where we were staying. I came to within about a 1 m of standing on it as it basked in the sun stretched out like a stick.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2634072489; Occurrence Remarks: Coiled in the brush a foot away from the hiking trail. Had walked right past it when we noticed. Did not seem agitated by our close presence. We were 4 feet away from it when this photo was taken.;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 2634466327; Occurrence Remarks: Need subspecies name. This rattler had two rattle pods, so fairly young.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2634586923; Occurrence Remarks: Yearling Helleri - 2 buttons on rattle, on edge of trail;; Coordinate Uncertainty in Meters: 154.00000.

GBIFID: 2641605675; Occurrence Remarks: April 3rd, 2016, on one of the trails in the Irvine Land Conservancy, location is approximate, I forget exactly where I saw it, but it was all grassland around. Sorry the picture quality is bad.;; Coordinate Uncertainty in Meters: 106.00000.

GBIFID: 2802618044; Occurrence Remarks: Overcast morning, 65┬░. Snake went into nearby ground den. Did not rattle at all.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2802570034; Occurrence Remarks: Found him with a full belly;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2814210502; Occurrence Remarks: Approx 60 cm long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2823093063; Occurrence Remarks: Dead on road.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2823322049; Occurrence Remarks: Dead on road. Large adult male.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1453531357; Occurrence Remarks: Small rattlesnake up Weir Canyon trail via Hidden Canyon trailhead.;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 2850588007; Occurrence Remarks: Found basking right in the middle of the trail. Moved it off the trail to save from passing mountain bikers.;; Coordinate Uncertainty in Meters: 101.00000.

GBIFID: 2850740773; Occurrence Remarks: Foggy, overcast morning, 63┬░. Outside of its nearby burrow;; Coordinate Uncertainty in Meters: 86.00000.

GBIFID: 2851314440; Occurrence Remarks: Picture is hard to see. Snake is coiled up, rattle at end of tail was visible. Not rattling though. Just silently judging me.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2851038568; Occurrence Remarks: Found this rattlesnake on a hike;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 2856552956; Occurrence Remarks: Lots of these fellows around our house this year. Hope they eat all the rats!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2856570934; Occurrence Remarks: Lots of these fellows around our house this year. Hope they eat all the rats!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2864638602; Occurrence Remarks: Unique color, dont remember seeing one exactly like this before.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 2868275585; Occurrence Remarks: Observed Southern Pacific Rattlesnake moving through the grass then disappearing under a bush below Roadrunner Loop trail.;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 4936830436; Occurrence Remarks: Malibu Bluffs;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2873907004; Occurrence Remarks: Southern Pacific rattlesnake, Solstice canyon;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2874027734; Occurrence Remarks: This young rattlesnake was run over by a car, revealing what appears to be a mouse it consumed before it was struck.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1562916498; Occurrence Remarks: Snake left paved trail and coiled in plants. Length about 0.7M Deane Dana Friendship Park;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2882975009; Occurrence Remarks: Photo taken with 30x zoom from safe distance, after we hurried away from the rattling sound. Ive had people tell me theyve never seen a rattle snake that didnt rattle at them, but for me this is only the 2nd snake that rattled, out of about 10 rattle snake sightings total.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2898514866; Occurrence Remarks: Was stationary at the edge of the trail with head and about 12inches of body fully exposed on the trail, with the rest of the body/tail largely obscured in the vegetation. It remained still as one couple came up behind me, but when two more people approached, it began rattling (sounded like buzzing) and fairly rapidly backed/coiled into the shrubbery. The thickest part of the body based on glimpses as it backed up was 2-2.5 inches. Best guess on length: 3.5-4 ft. Briefly saw the raised/rattling tail, and my impression was that it was a solid grey rather than striped.;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 899969682; Occurrence Remarks: Saw this snake around 5:30pm hanging out on the side of the trail. It then crossed the trail to get to the other side back into the bushes.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2981003701; Occurrence Remarks: On Devils Slide Trail;; Coordinate Uncertainty in Meters: 5.00000.

Orange, California: 33.80236, -117.654885: : 4/11/2026: Matthew Bokach: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3044804617; Occurrence Remarks: Found on the road leading up to the trails in powder canyon.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1584433665; Occurrence Remarks: Run over just east of skull rock;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079898603; Occurrence Remarks: I was about to go on a nice Sunday hike but first encountered this rattlesnake crossing my path. It had hints of green coming from the underbelly so I assume itΓÇÖs a Mojave Rattlesnake. Weather was low 70s, it was late morning and this was in a chaparral habitat with lots of grass and bushes.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936756442; Occurrence Remarks: Unfortunately found deceased on the side of the road;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3090692698; Occurrence Remarks: Found deceased along road.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1621776544; Occurrence Remarks: Small rattlesnake curled up in the warm gravel on the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3109044290; Occurrence Remarks: Unsure what kind of snake this is, help!;; Coordinate Uncertainty in Meters: 56383.00000.

GBIFID: 3109125552; Occurrence Remarks: I believe that this is Crotalus helleri The southern pacific rattlesnake?;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3112466727; Occurrence Remarks: Rattlesnake (Pacific?), about 5ish feet long, encountered on a trail from Malibu Bluffs Park heading through the open space bluffs west toward ocean. I counted about 3-4 rattles.;; Coordinate Uncertainty in Meters: 1802.00000.

Los Angeles, California: 33.738578, -118.345275: : 8/26/2017: NHMLA Community Science Program: 26 Aug 2017 :
GBIFID: 1640099718; Occurrence Remarks: Observation and photo by Marta Jevenois-Richardson.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3118291199; Occurrence Remarks: Rattlesnake in middle of path on sunny day. Location tentative, as the original location Id set it at was wrong. Found another image thats actually from that location. After a few minutes it slithered into the brush and under an oak tree. Was darting its tongue out smelling at some point. Time approximated as my cameras internal clock was inaccurate. 2nd shot shows the rattle, 4th shot the tongue. An ant was crawling on the snakes head in the 5th shot. The snakes head shape is more visible in shots 6 & 8, while 9 shows the full body and 10 shows the scales.;; Coordinate Uncertainty in Meters: 974.00000.

GBIFID: 3117868238; Occurrence Remarks: Location approximate. Photographed by my mom on a morning hike.;; Coordinate Uncertainty in Meters: 588.00000.

GBIFID: 3302345059; Occurrence Remarks: Originally a video of the snake;; Coordinate Uncertainty in Meters: 744.00000.

GBIFID: 1677311519; Occurrence Remarks: Snake was crossing Forrestal Drive inside the reserve about 9am;; Coordinate Uncertainty in Meters: 195.00000.

Los Angeles, California: 33.967786, -118.00049: : 11/17/2017: elllliiii_bbbaaaaa_belllleeee: 17 Nov 2017 :

GBIFID: 1038295629; Occurrence Remarks: I was riding along a heavy traffic trail at the bottom of the park and saw this juvenile SPR in the middle of the trail. I moved it along off the trail so it wouldnt get stepped on, run over, or picked up by a kid. Beautiful little thing!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3344091407; Occurrence Remarks: Rattlesnake (?) at the edge of the path. Found at a low point between two hills. Pretty sure this is the location, I got this mixed up with another Rattlesnake observation of mine.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3384278718; Occurrence Remarks: Found this specimen attempting to scale a concrete slope in order to hide within a bush. Not far behind it, a probable sibling heading towards the same destination.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3384769835; Occurrence Remarks: This male rattlesnake was first observed Sept 12 about 25 meters N of the plotted location. It was then located Sept 13 by landscapers working in this neighborhood. With permission from CDFW personnel, I relocated this snake a short distance away, west of Lincoln Blvd in an area where this species is known. The photos are from the release location.;; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.905175, -116.674828: : 8/16/2025: kalan714: 16 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 33.969545, -118.443: : 8/19/2025: rick_p: 19 Aug 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.001752, -118.608743: : 6/16/2025: Jacob: 16 Jun 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Riverside, California: 33.887276, -117.057764: : 8/17/2025: Lucas Ramirez: 17 Aug 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.882749, -117.140794: : 8/17/2025: Lucas Ramirez: 17 Aug 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Los Angeles, California: 33.738045, -118.347626: : 8/28/2025: mrbabygiraffe: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.945979, -117.401398: : 8/22/2025: algebrafish: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 6710.00000.

Los Angeles, California: 33.743228, -118.368119: : 8/31/2025: hgray: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.859535, -117.053662: : 8/31/2025: Lucas Ramirez: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.892766, -117.623333: : 8/24/2025: packardr90: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Orange, California: 33.794693, -117.743926: : 3/29/2026: sgibbard: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 58.00000.

Riverside, California: 33.875191, -117.664914: : 7/14/2026: trailherper: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 28902.00000.

Orange, California: 33.909328, -117.780403: : 2/4/2026: Leah Gardner: 4 Feb 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 33.972253, -118.438225: : 9/12/2025: jbrownwa: 12 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Snake; Coordinate Uncertainty in Meters: 4103.00000.

Los Angeles, California: 34.004295, -118.014188: : 9/27/2025: hamarque: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 22.00000.

Riverside, California: 33.760761, -116.719406: : 4/9/2026: jamiecatchfly: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.903863, -116.684282: : 8/30/2025: tbargholz: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 67.00000.

Riverside, California: 33.995882, -117.062622: : 8/10/2025: jmkent: 10 Aug 2025 ; Coordinate Uncertainty in Meters: 65.00000.

Los Angeles, California: 34.019067, -118.863775: : 5/28/2026: Zeev NG: 28 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Occurrence Remarks: Occurrence Remarks: Large Southern Pacific rattlesnake at CPP. We practiced tubing with this specimen under permits; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.091992, -118.612403: : 10/22/2025: Beth Pratt: 22 Oct 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.113698, -117.955022: : 9/12/2025: mxp_outdoors: 12 Sep 2025 ; Coordinate Uncertainty in Meters: 56.00000.

Los Angeles, California: 34.078812, -118.89275: : 10/17/2025: california_every_reptile: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.081517, -118.503141: : 8/13/2025: Daniel Stockel: 13 Aug 2025 ; Coordinate Uncertainty in Meters: 1.00000.

Ventura, California: 34.105633, -118.899513: : 11/29/2025: Noah Brady: 29 Nov 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.098867, -118.813103: : 3/19/2024: Liam Bertrand: 19 Mar 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.099787, -117.793244: : 7/26/2026: awrightiv: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Ventura, California: 34.09846, -118.990655: : 5/10/2024: Liam Bertrand: 10 May 2024 ; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.138894, -119.147484: : 7/9/2024: Liam Bertrand: 9 Jul 2024 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.077761, -116.920252: : 9/13/2024: Lucas Ramirez: 13 Sep 2024 ; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.136277, -119.011986: : 5/9/2024: Liam Bertrand: 9 May 2024 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.058797, -117.82788: : 9/4/2025: beatrizjimenez: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

Ventura, California: 34.125278, -119.164444: : 4/24/2026: erinfrog: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.133019, -118.404228: : 4/9/2026: Jack Smith: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.097364, -116.968763: : 3/23/2026: NICHOLAS KYRISS: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 34.00000.

Los Angeles, California: 34.098331, -118.840449: : 7/7/2025: Brody Musgrove: 7 Jul 2025 ; Coordinate Uncertainty in Meters: 252.00000.

Los Angeles, California: 34.136627, -118.599018: : 6/26/2026: spottedbyanthony: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 169.00000.

GBIFID: 4145518190; Occurrence Remarks: one seen;; Coordinate Uncertainty in Meters: 840.00000.

Los Angeles, California: 34.092352, -118.73461: : 9/2/2025: leiz666: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 2916.00000.

Los Angeles, California: 34.061878, -118.51407: : 8/23/2024: krazekimmy: 23 Aug 2024 ; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 1847439135; Occurrence Remarks: Joshua Tree National Park;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.118378, -118.411745: : 5/28/2026: awlauder1: 28 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: La Sierra Loop, Chino Hills; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.085592, -119.03505: : 4/4/2026: quetzal013: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.074692, -117.800027: : 4/16/2026: brianalanvh: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 1050.00000.

Los Angeles, California: 34.053233, -118.56305: : 4/16/2026: Wes Sechrest: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 107.00000.

San Bernardino, California: 34.105964, -117.146728: : 4/19/2026: salixbio: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.141262, -117.836014: : 4/20/2026: Bradley Rydholm: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 1414.00000.

Occurrence Remarks: This was a juvenile, maybe a foot long. I think the tail is only a segment or so long. I walked right by it on Big Sycamore Canyon Trail on its tail side as it lay in the middle of the trail and noticed it as I passed. So I stopped a few feet away and snapped a pic.; Coordinate Uncertainty in Meters: 42.00000.

Los Angeles, California: 34.11562, -118.755662: : 4/17/2026: its4britt: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 288.00000.

Los Angeles, California: 34.112428, -118.514603: : 4/25/2026: raystachowiak: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 367.00000.

Los Angeles, California: 34.13365, -118.77503: : 5/17/2026: kagy3: 17 May 2026 ; Coordinate Uncertainty in Meters: 24668.00000.

Los Angeles, California: 34.055307, -118.124424: : 5/16/2026: michaelchen36: 16 May 2026 ; Coordinate Uncertainty in Meters: 80.00000.

Los Angeles, California: 34.133027, -118.299387: : 5/20/2026: michaelchen36: 20 May 2026 ; Coordinate Uncertainty in Meters: 2378.00000.

Ventura, California: 34.073608, -119.015167: : 5/24/2026: areallycooldog: 24 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.054146, -116.168351: : 5/26/2026: James Maughn: 26 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3873801631; Occurrence Remarks: IΓÇÖm not used to rattlesnakes being so dark in color;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4121191541; Occurrence Remarks: This photo an hour later, near the same location as the coiled snake, but this one looks larger;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4080690410; Occurrence Remarks: Definitely the most exciting observation of the day. Terrible photos - snake is at the base of the tree.;; Coordinate Uncertainty in Meters: 107.00000.

San Bernardino, California: 34.09357, -116.9609: : 7/23/2022: neidarodriguez: 23 Jul 2022 :

Los Angeles, California: 34.115897, -118.754587: : 5/23/2025: Miroslava Munguia: 23 May 2025 ; Coordinate Uncertainty in Meters: 18.00000.

Los Angeles, California: 34.089042, -118.872497: : 5/24/2025: Miroslava Munguia: 24 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.109096, -119.106083: : 2/11/2026: ruanemartin: 11 Feb 2026 ; Coordinate Uncertainty in Meters: 395.00000.

Los Angeles, California: 34.131896, -118.310816: : 2/14/2026: herphendrie: 14 Feb 2026 ; Coordinate Uncertainty in Meters: 1002.00000.

Occurrence Remarks: Surprised to see it at the top of the dam.; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.102103, -118.792698: : 2/19/2026: nicky_12: 19 Feb 2026 ; Coordinate Uncertainty in Meters: 214.00000.

Los Angeles, California: 34.127903, -118.513772: : 2/28/2026: Max: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.061778, -118.564737: : 2/28/2026: flaipert: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.145655, -117.661036: : 3/1/2026: crote_jordan: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.064188, -117.922167: : 3/2/2026: Andrew Martinez: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.053699, -118.886002: : 3/1/2026: vixendoe: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 10504.00000.

Los Angeles, California: 34.08843, -118.577531: : 3/2/2026: J.J. Hsu: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.121222, -118.287325: : 3/3/2026: Brenton Cooper: 3 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.094581, -118.712137: : 2/26/2026: brookesullivan3131: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Ventura, California: 34.097661, -119.052055: : 3/6/2026: travelswithjeremy: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.095719, -119.05705: : 3/7/2026: jsurwin: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.095735, -119.057071: : 3/7/2026: jsurwin: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Supervisor didnΓÇÖt let me get close≡ƒÖä; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Juvenile rattlesnake climbing an almost vertical rock wall; Coordinate Uncertainty in Meters: 31.00000.

San Bernardino, California: 34.10496, -117.139086: : 3/10/2026: Lyndin Joseph R.: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.052245, -117.158464: : 3/10/2026: Lucas Ramirez: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.142778, -118.966462: : 3/15/2026: illybilly: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Big mommy next to her baby; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.104278, -118.57272: : 5/2/2026: han-hy: 2 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.0499, -118.559638: : 10/5/2025: Marius MacEssen: 5 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.126653, -118.62825: : 4/4/2026: nature_p: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.132908, -116.389173: : 5/6/2026: oilgavart: 6 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Occurrence Remarks: This small snake appeared to have been intentionally killed because its head was crushed and it was tossed to the side of the trail.; Coordinate Uncertainty in Meters: 34.00000.

Los Angeles, California: 34.099633, -118.729387: : 3/7/2026: Jacob Barroquillo: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.073381, -116.390503: : 5/6/2026: Erik Lopez: 6 May 2026 ; Coordinate Uncertainty in Meters: 85.00000.

Los Angeles, California: 34.118306, -118.31032: : 5/8/2026: glhans: 8 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.096275, -118.601653: : 3/24/2026: ageoldpun: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Ventura, California: 34.140389, -118.953453: : 2/3/2026: dryrunner: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.077892, -118.816688: : 2/3/2026: Sherrie: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.136647, -118.729888: : 4/6/2026: Beth Pratt: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Move to safe space; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.0652, -116.388947: : 4/30/2025: Aimie Olson: 30 Apr 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.109015, -116.98722: : 5/11/2025: Lucas Ramirez: 11 May 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.09235, -118.60385: : 9/16/2025: Jeffrey Esparza: 16 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.099911, -118.726931: : 9/16/2025: Boaz Benaiah Solorio: 16 Sep 2025 ; Coordinate Uncertainty in Meters: 141.00000.

Los Angeles, California: 34.126114, -118.707445: : 9/22/2025: chipsahoj: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: I saw this exact same rattlesnake at the same location on 9/20 as well.; Coordinate Uncertainty in Meters: 786.00000.

Los Angeles, California: 34.051553, -118.557764: : 9/20/2025: stevem22: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 282.00000.

Los Angeles, California: 34.051592, -118.557806: : 9/20/2025: stevem22: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 824.00000.

Ventura, California: 34.120463, -118.932826: : 9/5/2025: kiracicc26: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 33.00000.

Los Angeles, California: 34.124242, -117.738975: : 9/29/2025: gknat: 29 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

Los Angeles, California: 34.133322, -117.785732: : 9/29/2025: snichols16: 29 Sep 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.133792, -118.822212: : 5/11/2026: criggswrite: 11 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Saw the telltale marks on the trail and stopped to look around. This little one was a few feet off the trail on the upslope, trying to be inconspicuous. I stayed at a distance so the pic is garbage but you can just make out the rattle there. Was maybe two to two and a half feet long.; Coordinate Uncertainty in Meters: 48.00000.

Los Angeles, California: 34.136554, -118.2942: : 5/17/2026: carriebk: 17 May 2026 ; Coordinate Uncertainty in Meters: 2760.00000.

Los Angeles, California: 34.135731, -118.727463: : 4/6/2026: Beth Pratt: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 308.00000.

San Bernardino, California: 34.121876, -117.666833: : 2/28/2026: regryugitating: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.100781, -118.724105: : 3/16/2026: jack2772: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.101708, -118.930703: : 3/20/2026: adant: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.078208, -118.684172: : 3/22/2026: supoman78: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.067958, -117.017669: : 3/23/2026: NICHOLAS KYRISS: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Los Angeles, California: 34.132687, -118.286661: : 3/21/2026: freyafreya: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 309.00000.

Los Angeles, California: 34.10011, -118.718833: : 3/26/2026: Lauren Glevanik: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.135718, -118.150676: : 3/26/2026: Tom Mills: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.13075, -118.32312: : 3/27/2026: giovanna_freitas_: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 91.00000.

Occurrence Remarks: second snake iΓÇÖve seen :) hereΓÇÖs to many more; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.100212, -118.722536: : 3/28/2026: Ashley Adkins: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.061039, -118.877151: : 3/21/2026: dcwil4son: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.103183, -117.013264: : 4/5/2026: Brian Bargay: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 67.00000.

Los Angeles, California: 34.144067, -117.725632: : 3/14/2026: nohea11215: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.14407, -117.72563: : 3/14/2026: nohea11215: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Bernardino, California: 34.091771, -116.073031: : 4/12/2026: tkgoggin: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.100831, -118.724137: : 3/16/2026: gmilldq: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.062531, -118.514175: : 10/4/2023: krazekimmy: 4 Oct 2023 ; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.113669, -117.954919: : 10/3/2025: Adriana Regalado: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.133732, -118.315936: : 10/5/2025: kshare: 5 Oct 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.118825, -118.300812: : 6/4/2025: tiki16: 4 Jun 2025 ; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.13697, -118.728805: : 6/18/2025: Lauren Gill: 18 Jun 2025 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 34.114253, -118.4936: : 5/23/2025: eliseboyle5: 23 May 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.09704, -118.831852: : 11/29/2025: Brody Musgrove: 29 Nov 2025 ; Coordinate Uncertainty in Meters: 58.00000.

Occurrence Remarks: Observed along the trail in Topanga State Park; Coordinate Uncertainty in Meters: 62.00000.

Ventura, California: 34.099831, -118.932828: : 2/10/2025: Liam Bertrand: 10 Feb 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.100238, -117.188929: : 3/30/2025: Lucas Ramirez: 30 Mar 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.051578, -118.954978: : 6/12/2025: cawelles: 12 Jun 2025 ; Coordinate Uncertainty in Meters: 17.00000.

San Bernardino, California: 34.125892, -116.7584: : 6/2/2026: Sebastian Fayer: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 36.00000.

San Bernardino, California: 34.081823, -116.882234: : 7/5/2026: Lukasz Czerwinski: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.121796, -118.302184: : 6/1/2026: ARIANE CAZAUBON: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 825.00000.

Los Angeles, California: 34.129063, -118.299089: : 6/1/2026: ARIANE CAZAUBON: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 1297.00000.

San Bernardino, California: 34.088128, -116.884003: : 6/5/2026: Chris Elgabalawi: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: About 4.5 feet long; heavy. Actively rattling during the entire encounter. I relocated it a couple hundred yards from the house. Photo by Eric Windes.; Coordinate Uncertainty in Meters: 20.00000.

Los Angeles, California: 34.10355, -118.731712: : 6/7/2026: adiantumluz: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.055518, -116.995255: : 9/27/2025: Christine French: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 71.00000.

Los Angeles, California: 34.052045, -118.758667: : 6/27/2026: socalviolinguy: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.055436, -116.995241: : 9/27/2025: Christine French: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 71.00000.

Los Angeles, California: 34.122639, -118.407028: : 6/2/2025: Emmett: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.055985, -117.828175: : 9/2/2025: jakerobertbarrett: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.114111, -118.306821: : 4/15/2026: xxkkimmyfan192xx: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 106.00000.

Los Angeles, California: 34.097736, -118.72065: : 4/19/2026: Alondra Gallegos: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.074293, -118.666209: : 11/3/2025: huntsmano: 3 Nov 2025 ; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 3455739211; Occurrence Remarks: Around 55┬░F, crossing fireroad. Approx. 1ft in length. Even after physically startled (bike wheel went over it before specimen was noticed and pictures were taken), left area slowly. Seemed in good health otherwise;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1837763340; Occurrence Remarks: Saw this baby rattlesnake right off the trail, I went to pick it up with my snake hook and it started rattling REALLY loudly.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3698208229; Occurrence Remarks: In the blue;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3705570020; Occurrence Remarks: Juvenile seen on the fire road. Not aggressive.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 3712668477; Occurrence Remarks: Juvenile, ~1 year old;; Coordinate Uncertainty in Meters: 243.00000.

GBIFID: 3743012770; Occurrence Remarks: Baby rattlesnake, the tail was yellow and looked almost fuzzy;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 3747064531; Occurrence Remarks: Found this juvenile in some leaf little. Looks like it only had one rattle segment. Very calm and cool encounter.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3764108718; Occurrence Remarks: Taken at Malibu Creek State Park.;; Coordinate Uncertainty in Meters: 360.00000.

GBIFID: 3773017694; Occurrence Remarks: DOR.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3784755558; Occurrence Remarks: crotalus oreganus helleri;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.12148, -118.29234: : 4/27/2018: NHMLA Community Science Program: 27 Apr 2018 :
GBIFID: 1841285394; Occurrence Remarks: Observation and photo by Ruthie Bones sent via instagram #natureinla;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 1847439185; Occurrence Remarks: Joshua Tree National Park;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859854488; Occurrence Remarks: This was from years ago and I cant for the life of me remember more specifically where this was.;; Coordinate Uncertainty in Meters: 21387.00000.

GBIFID: 1847445543; Occurrence Remarks: spotted this beauty along a trail just right of the Old Zoo in Griffith Park.;; Coordinate Uncertainty in Meters: 5883.00000.

GBIFID: 1088900757; Occurrence Remarks: Just a little guy.;; Coordinate Uncertainty in Meters: 1795.00000.

GBIFID: 1088915692; Occurrence Remarks: seen by Elizabeth Long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3881376726; Occurrence Remarks: Large adult on the crawl;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4936913837; Occurrence Remarks: Franklin Canyon At least 6 feet long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1880509483; Occurrence Remarks: Yearling, preparing to go to sleep for the night amongst the trailside vegetation.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1088946093; Occurrence Remarks: Very mellow fellow;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1088958471; Occurrence Remarks: A 1 to 2 year old juvenile Crotalus helleri that we discovered under a small strip of bark near the town. It was carefully successuly tubed by Greg Pauly, who can also provide a scale reference of this specimen.;; Coordinate Uncertainty in Meters: 365.00000.

GBIFID: 1088958493; Occurrence Remarks: An adult Crotalus helleri that we found in a small, rocky creekbed on a cool and slightly damp afternoon. The specimen was an adult female, measuring approximately 70 cm in length. She was carefully and successfully tubed by Greg Pauly for further examination, before being released and slithering into a small burrow under some nearby rocks.;; Coordinate Uncertainty in Meters: 528.00000.

GBIFID: 1883936629; Occurrence Remarks: Middle of fire road...I rose my bike right by it wham it was full length and by the time I turned around for a pic it had curled up. I shood it off road with a very long stick.;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 1890046158; Occurrence Remarks: San Bernardino Peak Trail. Approx. 9600 ASL. So Pacific Rattlesnake? I have additional photos. I assume that the dark color is an adaptation to the cooler temperatures at high altitudes.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 1890056039; Occurrence Remarks: Second photo of Southern Pacific Rattlesnake posted earlier.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4039447869; Occurrence Remarks: Triangular head, seen and heard the rattle!;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4062894351; Occurrence Remarks: This a young snake that was found on a hiking trail. According to a regular hiker of this trail, it is too early for them to be this active;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1890709791; Occurrence Remarks: too much roadkill!;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4080623210; Occurrence Remarks: Smallish, quiet, with only a few rattles on its tail. Just left the hiking trail to methodically scale this rock wall.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4091911699; Occurrence Remarks: Slithered into grass almost immediately upon our arrival. Tail stayed hanging out of grass.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4096661665; Occurrence Remarks: Not a gopher snake? It didnΓÇÖt rattle when I was near it. Lots of gophers in the area.;; Coordinate Uncertainty in Meters: 6720.00000.

GBIFID: 1898822089; Occurrence Remarks: Species identification of these two separate rattlesnakes? They were found only feet apart on a trail head in Griffith Park. Both deceasedΓÇölikely killed by humans. One has a visible gash but the other didnΓÇÖt have obvious trauma. ≡ƒÿó;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 4855184671; Occurrence Remarks: Being eaten by a red-tailed hawk.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4121301785; Occurrence Remarks: early morning, about 60 degrees, in the shade;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1901079160; Occurrence Remarks: I happened upon this snake on 09/02/2018 at Wilacre Canyon park in Studio City, CA;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1913714508; Occurrence Remarks: Very small!;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4138329474; Occurrence Remarks: I thought that it might be a Western Rattle snake but I didnt hear or see a rattle. So I thought maybe a Desert Night snake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4950500573; Occurrence Remarks: Captured by a red-tailed hawk.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4138166829; Occurrence Remarks: Rattlesnake;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1099962291; Occurrence Remarks: I wanted to explore the forested area for a little bit. After walking up the path I saw some ground squirrels acting weird. I knew that there was a rattlesnake but I didnt see any. Finally I saw a baby ground squirrel and saw the rattlesnakes head about half an inch away from the baby squirrel. This rattlesnake was huge. It was fat too. This was the only rattlesnake I found throughout my whole trip. Throughout the whole trip people kept saying be careful of rattlesnakes and this was the only one. Not saying dont be careful but it felt good proving them all wrong.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3090555426; Occurrence Remarks: Buzz butt didnΓÇÖt want her picture taken.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1453060355; Occurrence Remarks: Biking on Sullivan Ridge;; Coordinate Uncertainty in Meters: 56249.00000.

GBIFID: 4165719143; Occurrence Remarks: Slim and long, gray in color and has some spots;; Coordinate Uncertainty in Meters: 8679.00000.

GBIFID: 4172108608; Occurrence Remarks: Found two Southern Pacific Rattlesnakes (possibly a breeding pair) under a bush. Left for approximately 15 minutes to go check out another area where I found rattlesnakes before. When I came back, one was gone and the other was going deeper under the bush.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4172117314; Occurrence Remarks: I at first thought it was alive so I pulled over but it turns out it was sadly run over.;; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.130821, -117.851835: : 8/9/2023: Boaz Benaiah Solorio: 9 Aug 2023 :

GBIFID: 4177502640; Occurrence Remarks: About 2.5-3 feet long. At the edge of JohnsonΓÇÖs Pasture Road in the Claremont Hills Wilderness Park.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1132414695; Occurrence Remarks: Looked like a juvenile.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 4405465291; Occurrence Remarks: Huge honkin guy right on the trail;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 4416673836; Occurrence Remarks: On side of road, mostly likely road kill.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4424694417; Occurrence Remarks: altered rattling sound produced by only the remaining segments;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4430544231; Occurrence Remarks: one of 2 seen wrestling just off trail; this one was angry enough to rattle at most of us passing on trail.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1143527578; Occurrence Remarks: Well, its about time I saw one of these.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4507938445; Occurrence Remarks: Molt;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 1990503116; Occurrence Remarks: While hiking with my son. Almost stepped on it.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4528086226; Occurrence Remarks: Near Ray Miller Trail in the Santa Monica Mountains. Partly cloudy day in the 60ΓÇÖs F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1143557002; Occurrence Remarks: Another very dark individual from the Santa Monica Mountains. Recently struck on the Stunt Ranch Preserve access road when found. Adult male, donated to LACMNH herp collection. Had recently ingested a large prey item.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4599903607; Occurrence Remarks: Male dominance ritual. Photos Linda Othenin-Girard, hiker.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4607494340; Occurrence Remarks: πüíπéâπéôπü¿πé¼πâ⌐πé¼πâ⌐Θâ¿σêåΦªïπüêπü╛πüùπüƒ;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4607491326; Occurrence Remarks: Young one, discovered while I was pulling weeds on a cool morning;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4606863163; Occurrence Remarks: One of two found together by @prakrit;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4607470171; Occurrence Remarks: When first spotted, this rattlesnake was stretched out across the middle of the fire road, as shown in the second photo. It seemed to just be lying there quietly, so I thought I walk off the trail as far as could to pass by its tail end. But when I started to move closer, it coiled up and rattled. I decided this was a good day to go in a different direction! On Gale Mtwy in the Claremont Hills Wilderness Park.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4855504224; Occurrence Remarks: Decided to scare them off the path so they didnt get hurt/hurt a kid or a dog or something. They rattled at me a decent bit, then slithered off to enjoy the rest of their day.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4863767758; Occurrence Remarks: On the side of Johnsons Pasture Road in the Claremont Hills Wilderness Park. It looped around an slithered back into the grass away from the road, with the rattle heading off last.;; Coordinate Uncertainty in Meters: 57.00000.

GBIFID: 4863860194; Occurrence Remarks: Shed skin;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.099, -118.69982: : 5/1/2019: captainblackburn: 1 May 2019 :

GBIFID: 4867943511; Occurrence Remarks: I am assuming this is a young rattlesnake that I found dead on the road that goes around the reservoir. It was probably less thana foot & a half long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2236832388; Occurrence Remarks: Baby Southern Pacific Rattlesnake at Topanga Canyon SP visitor center;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 4891997297; Occurrence Remarks: Very small rattlesnake, eating what I think is an alligator lizard (EDIT: a whiptail!), which was approximately the same size as the snake. Additional photos from someone who was with me on the walk, who doesnt have iNat and who gave me permission to post.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4937039065; Occurrence Remarks: DeAnza Park Las Virgenes Trail Peacefully resting under a tree;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2236233371; Occurrence Remarks: Young of the year (2018) animal in classic ambush posture approximately 3 feet off the ground in an oak. There were numerous spiny lizards (Sceloporus) around which Im assuming is a major component of the diet of young C. helleri. I have yet to encounter this species in a tree before. Im wondering if its worth writing up for herp review or other natural history publication.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4892065532; Occurrence Remarks: little one!;; Coordinate Uncertainty in Meters: 1414.00000.

GBIFID: 4901968053; Occurrence Remarks: Afternoon on the Loop Trail I spotted something in the distance; in binoculars, it was revealed to be a dead California Ground Squirrel. On May 5th, in almost exactly the same location, I observed a conflict between a San Diego Gopher Snake and a California Ground Squirrel, documented here: https://www.inaturalist.org/observations/213886336 Because of that earlier observation, I approached slowly and noticed there were snake tracks in the dirt to the left and to the right of the ground squirrel. I waited. After about a minute movement in the weeds along the northern edge of the trail, which soon revealed itself as a Southern Pacific Rattlesnake. The snake sampled the air with its tongue and made its way back to the California Ground Squirrel. Initially it tried to get its head around the squirrel; after re-adjusting a couple of times, it chose to drag the squirrel into the weeds on the north side of the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4901706595; Occurrence Remarks: Very large, about 3 ft/1 meter long and 2 in/5 cm in diameter;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4902147400; Occurrence Remarks: On the crawl ≡ƒÆâ;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4901492578; Occurrence Remarks: Always a great hike when you see multiple snakes;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4908124563; Occurrence Remarks: I think its either a gopher snake or southern pacific rattlesnake because of the size. Unfortunately was too baked and broken to inspect the tail of the shed, and I donΓÇÖt know too much about scale ID yet. I know gopher snakes get keels that dramatically, but rattlesnakes could too for all I know so IΓÇÖll keep it at ΓÇ£snakeΓÇ¥ for now;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4908855245; Occurrence Remarks: Lying across a trail. Looks like it might have just swallowed prey.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4908222215; Occurrence Remarks: On road, moved to safe area with snake grabber. It could not make it over the curb after investing a cottontail.;; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.055501, -118.528747: : 4/21/2019: Plant Intelligence Agency: 21 Apr 2019 :

GBIFID: 2237508016; Occurrence Remarks: Found dead in the stream, under water.;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.068686, -117.049131: : 7/12/2024: Alexander Gregory Mason: 12 Jul 2024 :

Los Angeles, California: 34.095936, -118.581694: : 10/21/2015: NHMLA Community Science Program: 21 Oct 2015 :
GBIFID: 1211976828; Occurrence Remarks: Yesterday 10/21/15 took a hike in Topanga state park and saw this beauty on the way back at dusk. Would say it was about 2/2.5 feet long... Also saw a small garter snake but couldnt get a snap of that. Claudia;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4922041554; Occurrence Remarks: CouldnΓÇÖt point out its size but it was slithering upwards the mountain rocks;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2238870098; Occurrence Remarks: Large snake out early behind trippet ranch interpretive center. Overcast with temps in the upper 50s. Snake was alert to our presence but hesitant to rattle. The two photos were taken approximately 2 hours apart and the snake had moved about 1 meter from its original position.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4925979919; Occurrence Remarks: This is the second Southern Pacific Rattlesnake in about the same spot on the fire road that Ive seen in three days.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936698739; Occurrence Remarks: 2/3 individuals I saw on the same trail, less than a mile apart from one another, all snakes reaching at least 3ft+.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4936653684; Occurrence Remarks: 1/3 individuals I saw on the same trail, less than a mile apart from one another, all snakes reaching at least 3ft+.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4937197745; Occurrence Remarks: Found crossing the road at about 76┬░ in the early evening.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4945608400; Occurrence Remarks: Seen eating a kangaroo rat. Small snake with only 4 rattle segments.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4935697002; Occurrence Remarks: Sullivan Canyon This was a fairly small snake--maybe 1.5 long.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4952323073; Occurrence Remarks: Mid body of the snake;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 4952627789; Occurrence Remarks: Visited my office sliding doors while working at pc. Moved it to a safe habitat location.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 2242859532; Occurrence Remarks: Small rattler on the steps leading up AmirΓÇÖs Garden in G.P.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4954268081; Occurrence Remarks: Female who had recently given birth;; Coordinate Uncertainty in Meters: 88.00000.

GBIFID: 4973786988; Occurrence Remarks: Video here https://youtu.be/73G7ccxIDdI;; Coordinate Uncertainty in Meters: 136.00000.

GBIFID: 2242919756; Occurrence Remarks: Deceased. :( Near trailhead and picnic area at Marvin Braude Mulholland Gateway Park.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4976447587; Occurrence Remarks: The location is correct. I know it seems unlikely. But the snake was completely black as the first time IΓÇÖve ever seen a rattlesnake in Los Angeles that was completely black. ThatΓÇÖs why I thought it was the related species. I read, though that sometimes the southern Pacific rattlesnake can have black portion on the tail , but the snake seemed black from head to toe except the belly.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2242984762; Occurrence Remarks: Somewhat juvenile;; Coordinate Uncertainty in Meters: 177.00000.

GBIFID: 2242996708; Occurrence Remarks: The baby rabbit was already dead on the trail when I passed earlier. Jays had pecked the eyes.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2244244266; Occurrence Remarks: Baby rattlesnake on edge of trail. Didnt want to move. time ever seen a rattlesnake on this trail.;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 4994317519; Occurrence Remarks: Saw this snake during a hike near my house.;; Coordinate Uncertainty in Meters: 191.00000.

GBIFID: 5006759319; Occurrence Remarks: This guy was particularly small and most likely a juvenile.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2251879800; Occurrence Remarks: Coiled juvenile. Photo by Eli Renteria.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5037004971; Occurrence Remarks: very grumpy that I was poking around near its hidey-hole;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3090835517; Occurrence Remarks: S/he did not want to share the shade of the greenbark ceanothus...;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 2251970996; Occurrence Remarks: This tiny juvenile with a very attractive light color was sound asleep on a fallen log alongside a small uphill trail. Its head would have fit completely on a penny.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2251972786; Occurrence Remarks: This tiny juvenile was coiled and asleep on the edge of the main trail. Dead to the world (and in fact seeming so at first) it did not move as I approached. I very cautiously placed a penny about 10 inches away and then photo shopped it closer to graphically show its diminutive size. Before I left I made sure to rouse this youngster from its slumber to move safely off the heavily travelled trail.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2251972056; Occurrence Remarks: Heading down the main trail several years ago I stumbled across two male rattlesnakes engaged in ritualized combat. I like to think of it as rattlesnake dancing.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2251975674; Occurrence Remarks: This juvenile rattlesnake, seen along the main trail, is likely digesting its first big meal!;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5070099331; Occurrence Remarks: Juvenile with a single button out in midday with temps in mid 60s following 3 days of rain. Earliest rattler Ive ever seen here.;; Coordinate Uncertainty in Meters: 226.00000.

GBIFID: 5087328676; Occurrence Remarks: One of three juveniles seen.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2265810516; Occurrence Remarks: Length- 2ft;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5104716618; Occurrence Remarks: 83 degrees;; Coordinate Uncertainty in Meters: 154.00000.

GBIFID: 2265869220; Occurrence Remarks: This tiny (13 inch approx.) juvenile was crossing the trail and heading down the hill as the temperatures on this very hot day were beginning to rise.;; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 34.097092, -117.153678: : 3/31/2025: Dustin VanOverbeke: 31 Mar 2025 :

Los Angeles, California: 34.136554, -118.2942: : 2/12/2016: NHMLA Community Science Program: 12 Feb 2016 :
GBIFID: 1249299993; Occurrence Remarks: Observation and photo submitted by @mysocallife1402 via Instagram #NatureinLA;; Coordinate Uncertainty in Meters: 737726.00000.

GBIFID: 5133346125; Occurrence Remarks: On Johnsons Pasture Road in the Claremont Hills Wilderness Park. When it saw me, it turned around and scooted off the road.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5133333827; Occurrence Remarks: Beside Johnsons Pasture Road in the Claremont Hills Wilderness Park. Very beautiful pattern, but unfortunately recently dead. The poor snake was almost completely bisected. To me, it didnt look like an animal had done it.;; Coordinate Uncertainty in Meters: 1.00000.

Los Angeles, California: 34.110786, -118.793695: : 3/19/2026: caguon: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2269268033; Occurrence Remarks: A mid-day rainshower was approaching as I walked downhill toward my car, when I heard a rustling in the brush on the uphill side of the trail. A rattlesnake, moving downhill, was about to cross the trail when my presence stopped him. I followed for a few minutes, trying for a shot in the bushes before I moved away, allowing him to cross the trail and continue moving down the hill.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5134436275; Occurrence Remarks: It looked pretty young, so IΓÇÖm not sure if this IS a rattlesnake.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2269299729; Occurrence Remarks: This medium sized young rattlesnake was sleeping on the side of a main trail apparently digesting a big meal. Since this area is heavily traveled by hikers and dogs, I spent some time encouraging this youngster to move off into the safety of the brush, but eventually he decided to climb a rather precarious wall into an overhanging bush.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5140041823; Occurrence Remarks: Juvenile.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 5140097750; Occurrence Remarks: Found on campus. Safely captured and relocated to the trail.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5140436697; Occurrence Remarks: Juvenile (very friendly);; Coordinate Uncertainty in Meters: 23.00000.

Los Angeles, California: 34.121906, -118.379792: : 5/7/2020: Vladimir Kovanovskiy: 7 May 2020 :

Los Angeles, California: 34.103817, -118.5121: : 2/28/2016: NHMLA Community Science Program: 28 Feb 2016 :
GBIFID: 1257410763; Occurrence Remarks: Rattlesnake on Westridge. - Sara Pauly Observation and photo by Sara Pauly, sent to rascals@nhm.org;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 2273284808; Occurrence Remarks: This adult was about 3 to 3.5 feet... havent been seeing any bigger in the past few years.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5141063683; Occurrence Remarks: One of the largest rattlesnakes Ive seen coiled up in its cozy den. I obviously couldnt tell the length, but the part I could see appeared to be about 2 in diameter. In the Johnsons Pasture area of the Claremont Hills Wilderness Park.;; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.099322, -118.473808: : 5/4/2025: Andy Kleinhesselink: 4 May 2025 :

GBIFID: 2283087340; Occurrence Remarks: Watch your step;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5154846276; Occurrence Remarks: Found it in my backyard, put it in a plastic bin and let it go a couple miles away. It was pretty pissed at me lol.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5153448220; Occurrence Remarks: Bulge in midsection suggests it ate a lizard;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2283139254; Occurrence Remarks: Had a huge lump from a recent meal. Maybe 4-4.5 ft;; Coordinate Uncertainty in Meters: 518.00000.

GBIFID: 5177211708; Occurrence Remarks: seen nearby hawk (https://www.inaturalist.org/observations/285206377);; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5176514831; Occurrence Remarks: It rattled at us before it left.;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 5188389722; Occurrence Remarks: Found under flat construction wood Most likely resting due to heat and digestion;; Coordinate Uncertainty in Meters: 201.00000.

GBIFID: 5198675714; Occurrence Remarks: Slithered into nearby hole after photographing him;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5198972037; Occurrence Remarks: one seen approx 50cm in length;; Coordinate Uncertainty in Meters: 184.00000.

Los Angeles, California: 34.124106, -118.287724: : 4/7/2016: NHMLA Community Science Program: 7 Apr 2016 :
GBIFID: 1265562860; Occurrence Remarks: observation and photo submitted via Instagram by @luckstercharms via #griffithpark;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5198839553; Occurrence Remarks: Frozen in place on the trail;; Coordinate Uncertainty in Meters: 121.00000.

GBIFID: 5217091173; Occurrence Remarks: Nature altar we created for a dead you young rattlesnake at camp;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2311314876; Occurrence Remarks: Removed from area of building 1 North entrance.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2311314126; Occurrence Remarks: unfortunately deceased. rattle was off when found. cause of death appeared to be a puncture wound but it was uncertain whether from wild animal or human.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1265586490; Occurrence Remarks: A small Southern Pacific Rattlesnake in Sullivan Canyon, Los Angeles.;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 2350369178; Occurrence Remarks: The Rattlesnake was moving under dry weeds and grasses, and was probably about 2 feet long. The rattle seemed to be broken. I would love to know if it was an adult, and if one can tell its approx. age from the coloring of its head. In other words, is this a survivor of the Woolsey Fire or a youngster? Thanks for any and all input!;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 4936292775; Occurrence Remarks: Cold Creek Canyon;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1265899670; Occurrence Remarks: Just off the road between the Blinderman Trail and the Chaparral Trail. Weather was cool, high 60s and one of the park staff said I would be unlikely to see one in those conditions. An hour later, I saw this one less than 30 feet from where we had that conversation.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 2366051811; Occurrence Remarks: Another Runyon denizen;; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.112808, -118.353622: : 5/29/2019: NHMLA Community Science Program: 29 May 2019 :
GBIFID: 2397638611; Occurrence Remarks: Observation and photo by Usmar, sent via email;; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.074655, -118.693753: : 4/30/2016: NHMLA Community Science Program: 30 Apr 2016 :
GBIFID: 1269562917; Occurrence Remarks: Backbone Trail just below Saddle Peak. - Dennis Hathaway Observation and photo by Dennis Hathaway, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 123.00000.

Los Angeles, California: 34.094258, -118.514192: : 5/11/2016: NHMLA Community Science Program: 11 May 2016 :
GBIFID: 1269563055; Occurrence Remarks: Observation and photo by Sara Pauly, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 2397694326; Occurrence Remarks: The Rattlesnake was hiding and then disappeared into one of the burrow openings in this spot. All I got was a partial shot of its body and the rattleΓÇª;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1269566497; Occurrence Remarks: Rattlesnake near Madea Creek, Paramount Ranch;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 2423124719; Occurrence Remarks: Very small;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1272097492; Occurrence Remarks: Juvenile basking on road at dusk in Claremont Hills.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 2429554778; Occurrence Remarks: Foot long youngster;; Coordinate Uncertainty in Meters: 151.00000.

GBIFID: 1273857142; Occurrence Remarks: This small portion of a rattlesnake was found on Sullivan Ridge Fire Road. Cause of death is unknown, but based on condition and location it was likely roadkill or killed by a passing hiker a few days earlier.;; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.093006, -118.728948: : 7/8/2012: Alexander Viduetsky: 8 Jul 2012 :
GBIFID: 1291159834; Occurrence Remarks: Taken at Malibu Creek State Park.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2574080035; Occurrence Remarks: Rattler on the trail, next to colorful microfibers that must have come off hiking gear or some suchΓÇª;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2574206615; Occurrence Remarks: Baby snake, looked like it had a rattle although I didnΓÇÖt hear it;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1305149019; Occurrence Remarks: Dead on road;; Coordinate Uncertainty in Meters: 2195.00000.

GBIFID: 2576312788; Occurrence Remarks: Observed rattlesnake bite and swallow baby cotton tail rabbit in the North parking lot of the Claremont Hills Wilderness Park. Our snakes are out about one month early this year because of the warm weather.;; Coordinate Uncertainty in Meters: 42.00000.

GBIFID: 2596091405; Occurrence Remarks: This was a baby just over a foot long.;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 2596117470; Occurrence Remarks: While tracking a butterfly ΓÇô not looking at the road ΓÇô we were alerted by a loud rattle from this coiled melanistic Southern Pacific Rattlesnake. Fortunately, it was more than 20 feet away, so we werent really in danger. We backed up, and it slithered off the trail, as shown in the photo sequence. It was around 2.5 to 3 feet long, but very thick. A good reminder that snakes are out now -- take care, everyone. (Note: Observed while we were helping with biological surveys on private land not accessible to the public ΓÇô not on a public trail, since all public trails in LA County are currently closed.);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891744562; Occurrence Remarks: Courting/mating rattlers in Fern Canyon. Photos is still-frame from video of this cool scene.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 2596393198; Occurrence Remarks: Rattlesnake crossing my path while on hike through Temescal Canyon;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 2597896041; Occurrence Remarks: This snake was spotted by a group of kids that were playing soccer at the park. Fortunately, neither the kids or the snake were injured. Had to be relocated to a more remote area of the park away from people.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2603420013; Occurrence Remarks: Incredible variety of frog and snake life in this canyon. This search was briefly alluded to in my article on endangered frogs in the SoCal mountains: Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1323026071; Occurrence Remarks: Small one at dusk;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2609282005; Occurrence Remarks: About 12 inches in length seen while walking small street loop on Commonweath Canyon Dr. which is open. None of the trails are.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2611092740; Occurrence Remarks: :-(;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2611209989; Occurrence Remarks: Possible Arizona Black Rattlesnake? The yellow diamonds are faded but still visible. Not sure about this Guy (or Gal) Im just glad we had a camera with a good enough zoom to stay way back!;; Coordinate Uncertainty in Meters: 1122.00000.

GBIFID: 2634480919; Occurrence Remarks: At Bronson Caves;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 2802635016; Occurrence Remarks: Newborn;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 2802713233; Occurrence Remarks: Snake - Griffith Park;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453463864; Occurrence Remarks: dead baby/small rattlesnake in middle of the trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2818715849; Occurrence Remarks: a very dark one;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2818499825; Occurrence Remarks: Westridge fire road, in shady spot on a warm morning.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453507142; Occurrence Remarks: When first spotted, this snake had two California ground squirrels near it. Both had their tails held high and were presumably tail flagging. Unfortunately, both squirrels ran off before I could get a photo of them interacting with the snake.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2818600607; Occurrence Remarks: Unfortunate victims of vehicles;; Coordinate Uncertainty in Meters: 389.00000.

GBIFID: 2823308947; Occurrence Remarks: Malibu Creek State Park;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453525890; Occurrence Remarks: Snake was about 50cm long, crossed the road in front of us, fairly slowly. We kept our distance, but snake did not seem concerned with us.;; Coordinate Uncertainty in Meters: 65.00000.

Los Angeles, California: 34.054979, -118.512562: : 3/14/2017: NHMLA Community Science Program: 14 Mar 2017 :
GBIFID: 1455572886; Occurrence Remarks: ...here are some creatures from today at Will Rogers between the parking lot and Inspiration Point. Observation and photo by Jane Pannor, sent to nature@nhm.org.;; Coordinate Uncertainty in Meters: 176.00000.

GBIFID: 1455583509; Occurrence Remarks: This snake was along the lower Eagle Rock Loop. It had partially buried the anterior portion of its body in loose soil.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1455583611; Occurrence Remarks: 100 meters down the Musch Trail from the paved road, some horrible person crushed this adult rattlesnake to death using rocks that were lining the trail edge. You can see 5 of these rocks in one of the photos. I found 6 rocks in the area that had been picked up from nearby and then used to stone this snake. This is in Topanga State Park making this all that much more difficult to witness.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3455927610; Occurrence Remarks: rattlesnake;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 2826479932; Occurrence Remarks: Big!;; Coordinate Uncertainty in Meters: 216.00000.

GBIFID: 2826237265; Occurrence Remarks: Griffith Park trail. Poor thing had been killed with a rock. At least my taking a photo prompted conversations with some hikers about why people shouldnt kill wildlife. Sigh. ≡ƒÿ₧;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1457596183; Occurrence Remarks: Dead on road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936339373; Occurrence Remarks: Santa Ynez Canyon Hiding in a rock cavity;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2850714820; Occurrence Remarks: Beautiful, freshly shed helleri;; Coordinate Uncertainty in Meters: 493.00000.

GBIFID: 899949000; Occurrence Remarks: Southern Pacific Rattlesnake, Franklin Canyon Park, Los Angeles, CA in evening;; Coordinate Uncertainty in Meters: 2639.00000.

GBIFID: 899949752; Occurrence Remarks: Eating fledgling mockingbird;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 2856649394; Occurrence Remarks: Taken by Antoine Kunsch;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 899952694; Occurrence Remarks: This amazingly gorgeous young fellow has shown up twice in last week while I was pulling grass, so today I moved him back into Griffith Park.;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 1500260743; Occurrence Remarks: Photo and Observation via Facebook by Kristin C. Sabo;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 2860125140; Occurrence Remarks: Photo courtesy of Mason Allport.;; Coordinate Uncertainty in Meters: 1505.00000.

GBIFID: 2859975234; Occurrence Remarks: Rescued from my friends backyard;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1500292866; Occurrence Remarks: Observation and photo by odetomuir, sent via Instagram #natureinla;; Coordinate Uncertainty in Meters: 2718.00000.

GBIFID: 1563417995; Occurrence Remarks: DOR, Mulholland Hwy;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936150354; Occurrence Remarks: Topanga State Park;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2873766669; Occurrence Remarks: Southern Pacific Rattlesnake working on a very large breakfast!;; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 4936049749; Occurrence Remarks: Temescal Ridge;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3044646316; Occurrence Remarks: Found next to the parking lot in Malibu Creek State Park.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1562915664; Occurrence Remarks: Observation and photo submitted by Mark McKee;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 899965029; Occurrence Remarks: Paramount Ranch in Agoura Hills;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 899975638; Occurrence Remarks: A large and likely female Southern Pacific Rattlesnake that we encountered almost right behind one of the vendors at the Science Fest event. She was easily over a meter in length, and repeatedly tried to evade us and retreat to a ground squirrel burrow. She never rattled or even struck at anything as she was wrangled, and she was eventually detained for the duration of the event. She was then released back where she was found as the event ended.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 899975677; Occurrence Remarks: A second adult Southern Pacific Rattlesnake that we encountered on one of the trails outside of the town. Based on its size, it was likely an adult male who measured approximately a meter in length. He was found in a small den on the hillside, and was brought out into the open for the tour group to view. He barely rattled as Greg manipulated him with the tongues and snake hook, and was returned to his den a few minutes later.;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 899976718; Occurrence Remarks: Encountered at Cheeseboro Canyon Phenology Site 2. This is a different individual than the last one. Much smaller.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 899977281; Occurrence Remarks: This individual was spotted off the Coyote Canyon Trail during Greg Paulys herp hike that started at 1:30pm. This snake did not strike or rattle its tail despite Greg taking the snake from its shelter and carefully showing it to the people on the hike. The snake was returned to its shelter.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572383580; Occurrence Remarks: Recently fed;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3044717081; Occurrence Remarks: Baby rattler, about a foot long, completely still in the middle of a dirt road where I was walking my dog. DidnΓÇÖt move at all but was alive.;; Coordinate Uncertainty in Meters: 63.00000.

GBIFID: 1584423393; Occurrence Remarks: Wow! Dirt Mulholland;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070681062; Occurrence Remarks: Juvenile basking on road at sunset.;; Coordinate Uncertainty in Meters: 127.00000.

GBIFID: 3079820816; Occurrence Remarks: not exact location, road kill , dead;; Coordinate Uncertainty in Meters: 137.00000.

GBIFID: 3079610044; Occurrence Remarks: I think thatΓÇÖs a rattle at the tail end?;; Coordinate Uncertainty in Meters: 8751.00000.

GBIFID: 1586149503; Occurrence Remarks: Road kill;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1024190781; Occurrence Remarks: This snake was stationary on the side road leading to Encino Reservoir off of dirt Mulholland, but he began heading for cover as soon as I approached to take a photo. The pictures arent great because of low light and the snakes refusal to pose.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3118396633; Occurrence Remarks: About 120cm long. A juvenile?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3118392700; Occurrence Remarks: my family and I were hiking when we almost stepped on this ≡ƒÉì;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3118340846; Occurrence Remarks: California king eating a rattlesnake;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 1668894184; Occurrence Remarks: Little baby snake found under a cow stall. Catching a bit of late afternoon sunlight.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3307121167; Occurrence Remarks: A park visitor threw a stick at it before I got there.;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 1024211112; Occurrence Remarks: @10am Open field on rt. after point where road crosses creek, after lower parking lot. Herpetologist was shading it from sun during observation period;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3314499906; Occurrence Remarks: Just a wee babe at Trippett Ranch. Cutie!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1024214305; Occurrence Remarks: Big daddy!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4937021067; Occurrence Remarks: King Gillette First Ive seen this year..I know theyre around but seem scarcer due to the drought;; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.142073, -118.29575: : 6/15/2014: NHMLA Community Science Program: 15 Jun 2014 :
GBIFID: 1024220032; Occurrence Remarks: Saw these guys in Griffith park. About June 15 this year. I was walking along a trail near Amirs Garden when the lizard ran across the trail and over the snake. They both seemed startled to see each other. The lizard ran away after I took the photo. - Eric Richard Observation and photo by Eric Richard, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 91.00000.

Los Angeles, California: 34.130755, -118.313437: : 9/1/2014: NHMLA Community Science Program: 1 Sep 2014 :
GBIFID: 1024220737; Occurrence Remarks: Griffith Park, it was on a single track just east of Mt. Lee up above the stables. - Faye L. Wachs Observation and photos by Faye L. Wachs, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 3327962964; Occurrence Remarks: Ive never seen this snake in LA.;; Coordinate Uncertainty in Meters: 32724.00000.

GBIFID: 3330845554; Occurrence Remarks: Juvenile, in the carport.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.127073, -118.389324: : 7/29/2017: NHMLA Community Science Program: 29 Jul 2017 :
GBIFID: 1703174854; Occurrence Remarks: Observation and photo by bywelldesign, sent via Instagram #natureinla;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 3333221476; Occurrence Remarks: I believe this is a Southern Pacific Rattlesnake skin. I welcome feedback/other thoughts. Found in the Topanga Canyon Community Center Garden.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3333380570; Occurrence Remarks: 4 snakes in total. Found in field adjacent to salt panne;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3335402084; Occurrence Remarks: Deceased. Killed and decapitated by humans.;; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.136515, -118.294177: : 10/20/2017: NHMLA Community Science Program: 20 Oct 2017 :
GBIFID: 1703220778; Occurrence Remarks: Observation and photo by ruthiebones, sent via instagram #natureinla two rattlesnakes, either mating or fighting;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 1802743132; Occurrence Remarks: The shed seemed pretty old. Was found among the base of a tree that had fallen long ago. Great hiding places for a snake; lots of pieces of stacked concrete, rocks and vegetation.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3384721935; Occurrence Remarks: Just a baby!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3391322829; Occurrence Remarks: lower San Dimas Canyon juvenile approx. 30 cm;; Coordinate Uncertainty in Meters: 3593.00000.

Los Angeles, California: 34.133939, -118.289038: : 6/17/2026: wormswormsworms: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 285.00000.

Los Angeles, California: 34.056503, -118.514458: : 7/2/2026: Andy Kleinhesselink: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.094055, -118.587193: : 8/22/2025: artfox14: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.074131, -118.714012: : 8/22/2025: TM: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.126477, -117.973858: : 8/27/2025: Steven Kurniawidjaja: 27 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.121881, -118.300645: : 8/28/2025: glhans: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: With heliotrope for scale. About palm sized.; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.049708, -118.882637: : 7/3/2026: sbhedricks: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.0788, -118.02423: : 8/31/2025: dquintero: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 7000.00000.

Los Angeles, California: 34.05595, -117.828137: : 9/2/2025: jakerobertbarrett: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.056616, -117.827989: : 9/2/2025: mycobacteriumtb: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Los Angeles, California: 34.125334, -117.738869: : 9/3/2025: gknat: 3 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Los Angeles, California: 34.058797, -117.82788: : 9/4/2025: loisvienne: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

Occurrence Remarks: Southern Pacific Rattlesnack; Coordinate Uncertainty in Meters: 16.00000.

Los Angeles, California: 34.058797, -117.82788: : 9/4/2025: nicolelopez13: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

Los Angeles, California: 34.058797, -117.82788: : 9/4/2025: leftyspencer: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

Occurrence Remarks: At the foot of the stage used for Free Shakespeare in the Park Currently performing Doctor Faustus by Christopher Marlowe Actual Quotes from Play: Enter DEVILS. My God, my god, look not so fierce on me! Adders and serpents, let me breathe a while! The students lay neere unto the hall wherein Doctor Faustus lay, and they heard a mighty noyse and hissing, as if the hall had beene full of snakes and adders.; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.086831, -116.8732: : 9/7/2025: Doug Decker: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 88.00000.

Los Angeles, California: 34.126623, -118.300814: : 7/4/2026: amsantiago: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.0969, -118.585847: : 7/12/2026: libbie-reiss: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.105664, -118.59068: : 7/18/2026: jlponsetto: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.145961, -117.708458: : 7/19/2026: Alex Lin-Moore: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.13615, -118.307346: : 9/14/2025: herphendrie: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 4095.00000.

Los Angeles, California: 34.119048, -118.8603: : 5/28/2026: Zeev NG: 28 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 891091360; Occurrence Remarks: baby;; Coordinate Uncertainty in Meters: 1326.00000.

GBIFID: 4952209938; Occurrence Remarks: Sunbathing in the middle of the fire road. Nearly stepped on it!;; Coordinate Uncertainty in Meters: 12.00000.

Ventura, California: 34.209972, -118.827508: : 10/30/2025: firstwinter: 30 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Dead (being eaten by hawk.) Atop Acorn Woodpecker Granary.; Coordinate Uncertainty in Meters: 1.11000.

Los Angeles, California: 34.156295, -117.834922: : 10/17/2025: gavitp: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Road kill; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.156432, -118.728138: : 7/23/2026: Toby Serviss: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 43.00000.

Occurrence Remarks: I think this is a sign of good luck; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.209083, -118.054519: : 7/25/2026: timwendyd: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.200275, -118.213837: : 7/26/2026: Maureen McHale: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.171368, -118.77728: : 9/3/2025: a_laughton: 3 Sep 2025 ; Coordinate Uncertainty in Meters: 336.00000.

Los Angeles, California: 34.200085, -118.166814: : 3/15/2026: kliewer: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3873334735; Occurrence Remarks: First of 2 seen after dark.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4145819417; Occurrence Remarks: This snake continues at same location first observed the day prior (6/23/23 - Observation 169102655).;; Coordinate Uncertainty in Meters: 209.00000.

Los Angeles, California: 34.157922, -117.829825: : 9/23/2025: gavitp: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1099970217; Occurrence Remarks: Eating;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4111618790; Occurrence Remarks: Young;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1841218585; Occurrence Remarks: Found dead next to parking lot.;; Coordinate Uncertainty in Meters: 194.00000.

Los Angeles, California: 34.159556, -118.768439: : 5/16/2026: loganeddington: 16 May 2026 ; Coordinate Uncertainty in Meters: 445.00000.

Los Angeles, California: 34.155903, -118.772767: : 4/4/2026: emmels10: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 21.00000.

Los Angeles, California: 34.154903, -118.72629: : 5/27/2026: krishfinds: 27 May 2026 ; Coordinate Uncertainty in Meters: 62.00000.

Los Angeles, California: 34.213383, -118.168401: : 4/30/2026: Russ DiFiori: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.199026, -118.17072: : 4/15/2026: desertratttt: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Los Angeles, California: 34.166888, -117.81581: : 4/20/2026: Bradley Rydholm: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: Young Southern Pacific Rattlesnake ΓÇô about 12 long ΓÇô in the Cobal Canyon Trail in the Claremont Hills Wilderness Park.; Coordinate Uncertainty in Meters: 31.00000.

Los Angeles, California: 34.19792, -118.022347: : 5/13/2026: marcll128: 13 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.1613, -117.823595: : 5/22/2026: gavitp: 22 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.19479, -118.168761: : 5/24/2026: Franco: 24 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.173646, -118.779792: : 5/4/2026: Audrey Lee: 4 May 2026 ; Coordinate Uncertainty in Meters: 198.00000.

Los Angeles, California: 34.15517, -118.726328: : 5/27/2026: krishfinds: 27 May 2026 ; Coordinate Uncertainty in Meters: 48.00000.

Ventura, California: 34.173508, -118.744325: : 5/30/2026: Toby Serviss: 30 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.181972, -118.024558: : 5/29/2026: annabellaliao: 29 May 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Los Angeles, California: 34.191854, -118.270628: : 5/31/2026: equintanar: 31 May 2026 ; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 1847609546; Occurrence Remarks: Was told by an information person at Desconso that this is probably a King Snake not a Rattle snake...;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4102963585; Occurrence Remarks: Actually the Southern Pacific subspecies;; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: Stay on designated trails yall; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.178945, -118.045678: : 2/12/2026: Devin Rodgers: 12 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.206637, -118.769719: : 4/29/2025: kcmccarty: 29 Apr 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.15021, -118.961658: : 2/25/2026: Susie Jensen: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 28.00000.

Los Angeles, California: 34.156572, -118.180657: : 2/27/2026: heyrayreh: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 97.00000.

Ventura, California: 34.211616, -118.727632: : 2/28/2026: thomasrr: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 44614.00000.

Los Angeles, California: 34.204093, -118.263293: : 3/5/2026: california_every_reptile: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.200195, -118.165406: : 3/12/2026: desertratttt: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 59.00000.

Ventura, California: 34.148286, -118.958211: : 3/15/2026: Kelly H: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.202589, -118.965183: : 3/14/2026: Mike Biscoe: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.16137, -117.82245: : 2/28/2026: gavitp: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Ventura, California: 34.150457, -118.961438: : 3/21/2026: noahwerner: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1088925697; Occurrence Remarks: Took a lot of prodding to get this guy off the trail so it wouldnt get run over by cyclists!;; Coordinate Uncertainty in Meters: 27.00000.

Los Angeles, California: 34.199912, -118.210022: : 4/29/2026: Karina: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.195122, -118.222678: : 3/26/2026: caseb: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.172485, -117.991809: : 3/19/2026: William Mason: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Los Angeles, California: 34.173453, -117.990069: : 3/19/2026: William Mason: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 40.00000.

Ventura, California: 34.183797, -118.746026: : 5/4/2026: Regan: 4 May 2026 ; Coordinate Uncertainty in Meters: 65.00000.

Los Angeles, California: 34.200269, -118.213137: : 5/4/2026: Jason Kruger: 4 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.147376, -118.20729: : 3/9/2026: William Mason: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.187797, -118.255722: : 5/7/2026: Noah: 7 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.178053, -118.744629: : 5/8/2026: krishfinds: 8 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Ventura, California: 34.154553, -118.96457: : 4/24/2026: Britney Solomon: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.210914, -118.120774: : 5/9/2026: mudduckinmud: 9 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.209953, -118.030953: : 5/8/2026: socalviolinguy: 8 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.16056, -119.046616: : 2/4/2026: hassnalancaster: 4 Feb 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Ventura, California: 34.160613, -119.046621: : 2/4/2026: Solomon Adams: 4 Feb 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.189338, -117.317034: : 2/5/2026: K Rizzo: 5 Feb 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Ventura, California: 34.150232, -118.953685: : 2/8/2026: timmy2cents: 8 Feb 2026 ; Coordinate Uncertainty in Meters: 54.00000.

Occurrence Remarks: A very curious danger noodle; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.160756, -117.825028: : 9/17/2025: Bradley Rydholm: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Los Angeles, California: 34.161988, -117.818848: : 9/10/2025: Bradley Rydholm: 10 Sep 2025 ; Coordinate Uncertainty in Meters: 77.00000.

Los Angeles, California: 34.1945, -118.209922: : 9/26/2025: Earl Maize: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Pretty lazy character. Staying still and not rattling.; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Western or Mojave?; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.184174, -118.674043: : 5/16/2026: imanjemal: 16 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.148243, -118.655153: : 3/17/2026: jaredman28: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.197075, -118.25805: : 3/17/2026: Leila Warren: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.172402, -117.992007: : 3/19/2026: Boaz Benaiah Solorio: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 53.00000.

Los Angeles, California: 34.173067, -117.990697: : 3/19/2026: Boaz Benaiah Solorio: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 194.00000.

Ventura, California: 34.166825, -118.905037: : 3/20/2026: Cormeys: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.173035, -117.991092: : 3/20/2026: Meehan Kono: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 51.00000.

Ventura, California: 34.171108, -118.724045: : 3/21/2026: cindyd923: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.171358, -117.994394: : 3/21/2026: Dave Campbell: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: The head was nowhere to be found.; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Adult rattlesnake observed in a residential area. Individual was coiled in a defensive posture near stored materials. Distinct dark coloration with irregular dorsal blotches and banded tail consistent with Crotalus helleri. Animal control was contacted, safely removed the snake, and relocated it.; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.211607, -118.019774: : 3/22/2026: tigran82: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 195.00000.

Ventura, California: 34.184861, -118.772881: : 3/20/2026: HGL: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.193768, -118.170912: : 3/23/2026: desertratttt: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 59.00000.

Los Angeles, California: 34.201703, -117.774362: : 3/24/2026: falconpatrol: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.148458, -117.677033: : 3/24/2026: csuen: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Guy I know kills every rattler that gets into his yard unfortunately; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.204145, -117.967568: : 3/25/2026: Tom Mills: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.168972, -118.703987: : 3/28/2026: goyacho: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.153617, -118.952417: : 3/31/2026: richelle_kirkham: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Walked by her she seemed pretty chill about it; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.1838, -118.276092: : 4/2/2026: Sofia Arceo: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.177377, -117.990573: : 4/4/2026: depoire: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 172.00000.

Occurrence Remarks: Just the tail end heading in the mustard on middle right side; Coordinate Uncertainty in Meters: 1.00000.

Ventura, California: 34.159554, -118.811108: : 4/10/2026: ccasazza: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.172219, -117.99241: : 10/3/2025: William Mason: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.163689, -117.840263: : 10/6/2025: gavitp: 6 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.155381, -118.956051: : 9/7/2025: Brody Musgrove: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 165.00000.

San Bernardino, California: 34.188895, -117.185081: : 7/31/2025: Lucas Ramirez: 31 Jul 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.152673, -118.965119: : 7/22/2025: Jared Griffin: 22 Jul 2025 ; Coordinate Uncertainty in Meters: 151.00000.

Ventura, California: 34.175496, -118.765691: : 6/15/2025: truffles: 15 Jun 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.151065, -117.72289: : 6/3/2026: christinec22: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 65.00000.

Los Angeles, California: 34.167369, -117.992232: : 6/6/2026: celinet1277: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 89.00000.

Los Angeles, California: 34.151875, -118.731392: : 6/6/2026: dryrunner: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.20532, -118.018294: : 6/9/2026: gridlockcaravans: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: the rattle is visible (left side, just below middle) i wouldve gotten a better pic if my sister wasnt yelling at me :/ I kept telling her that theyre not really anything to be afraid of if you just stay a few feet back, but she never listens; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.150295, -118.961167: : 6/16/2026: ehewson: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 74.00000.

Los Angeles, California: 34.182646, -117.987869: : 6/15/2026: kjolee: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 184.00000.

Occurrence Remarks: Second of 2 seen thirty feet apart.; Coordinate Uncertainty in Meters: 20.00000.

Los Angeles, California: 34.166888, -117.838372: : 6/26/2026: gavitp: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: about the size of a big gulp lid (scientific language); Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Relocation from a residence; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 1836627996; Occurrence Remarks: Photo and observation by Charlie Jaecker-Jones.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3455926705; Occurrence Remarks: Found underneath a log;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3747292709; Occurrence Remarks: Hiking around the tower, spotted this guy! Looks like a young/small snake.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3747258241; Occurrence Remarks: Barely discernible, but identifiable.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3759756592; Occurrence Remarks: Found DOR;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3764510857; Occurrence Remarks: Juv. Ph Harry Medved. Got to safety of open space but initially on road.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1839235950; Occurrence Remarks: Seen in Big Santa Anita Canyon. Riparian forest of white alders, coast live oak and California bay laurel.;; Coordinate Uncertainty in Meters: 345.00000.

GBIFID: 3773763321; Occurrence Remarks: Maybe a meter long or a tiny bit more? Startled me as I went to photograph a rockcress. Right next to the trail and near a large group of people, apparently unperturbed. Slithered languidly along the trail as we waited for it to clear off. What a good creature.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3772471395; Occurrence Remarks: The tail end of a fast-moving snake, heading for cover in the grass;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3772650032; Occurrence Remarks: Hike with Biology Research Club. Paradise Falls;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.149078, -118.28487: : 4/27/2018: Steven Kurniawidjaja: 27 Apr 2018 :

Los Angeles, California: 34.147228, -117.776075: : 5/6/2022: betweeneverytwopines: 6 May 2022 :

GBIFID: 1841223085; Occurrence Remarks: dead!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4022118403; Occurrence Remarks: Baby rattlesnake;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3772836447; Occurrence Remarks: Baby Rattle Snake;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3773735252; Occurrence Remarks: small rattlesnake laying in the middle on tree;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 3859145284; Occurrence Remarks: Gorgeous individual found crossing the stream. It coiled up when it noticed us and remainder calm but aware the entire time. Such amazing and misunderstood creatures.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3860479243; Occurrence Remarks: Swallowing a rat;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3858595344; Occurrence Remarks: Juvenile, about 40 cm in length.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3873303721; Occurrence Remarks: Found this right in the middle of our makeshift basketball/badminton court. Was fairly small (maybe 2 feet long, 3-4 inches thick at widest point). Based on what I can glean from sources about how to identify rattlesnake sex, I think itΓÇÖs a male.;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 3873065500; Occurrence Remarks: Ambient temperature about 80┬░ F;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 891098690; Occurrence Remarks: Almost stepped on it;; Coordinate Uncertainty in Meters: 438.00000.

Los Angeles, California: 34.148956, -118.6988: : 7/28/2022: Anise Marie Dellith-Moser: 28 Jul 2022 :

GBIFID: 1848773572; Occurrence Remarks: Dead baby rattlesnake;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3903212965; Occurrence Remarks: Teeny tiny baby!;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1850972881; Occurrence Remarks: Crotalus (oreganus) helleri 12 Jun 2018 CA, SBE Co., CSUSB;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3915631662; Occurrence Remarks: Sopac with his darkling beetle friend;; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.179172, -118.762868: : 6/4/2018: NHMLA Community Science Program: 4 Jun 2018 :
GBIFID: 1880586852; Occurrence Remarks: Observation and photo by nikkocurti, sent via Instagram #natureinla.;; Coordinate Uncertainty in Meters: 1446.00000.

GBIFID: 3947076711; Occurrence Remarks: Observation for the rattlesnake;; Coordinate Uncertainty in Meters: 73.00000.

GBIFID: 3947608083; Occurrence Remarks: Juvenile less than 12 inches.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1883931821; Occurrence Remarks: I know...bad pic but he was fast!;; Coordinate Uncertainty in Meters: 132.00000.

GBIFID: 1883936951; Occurrence Remarks: Not a great pic but I like being able to identify the track which is very distinctive.;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 4018386496; Occurrence Remarks: Spotted in fall;; Coordinate Uncertainty in Meters: 395.00000.

GBIFID: 4029041738; Occurrence Remarks: Deceased :( one of my chickens was standing evilly over the body when I found it... although I highly doubt the chicken actually killed it.;; Coordinate Uncertainty in Meters: 61.00000.

Ventura, California: 34.178844, -118.959614: : 5/11/2015: NHMLA Community Science Program: 11 May 2015 :
GBIFID: 1092880191; Occurrence Remarks: First in front garden, later by pool (moving quickly), up the fountain/wall - didnt want to tell neighbor. She will have it killed. Very dark, black, diamond pattern over half-2/3, stripes at back 1/4-1/3. Rattle little- finger sized. Body 2-3 diameter at fattest, 3-4 length. - Adele Nguyen Observation and photos by Adele Nguyen and Loi Nguyen, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1092883497; Occurrence Remarks: When beginning our hike my friend Danny and I saw a rattle under a tree. I took a couple of photos. It still alive, not rattling but it would open its mouth and move (pretty awesome). On our way back (about 45 min later) from the hike we decided to look under the same tree the rattle was in to get better pictures. We found it but discovered it had been pulled into some nearby bushes by a California Snake ! It was now eating the rattle as its dinner. - Jessica Medrano Observation and photos by Jessica Medrano, sent to rascals@nhm.org. California Kingsnake observation by Jessica Medrano can be found here: http://www.inaturalist.org/observations/1501898;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 1092885092; Occurrence Remarks: Cloudy day, too many people kept scaring him back in hole.;; Coordinate Uncertainty in Meters: 43.00000.

GBIFID: 4080877631; Occurrence Remarks: Trail side;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4096813946; Occurrence Remarks: Found in the middle of the road, moved away from passing cars.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4096903663; Occurrence Remarks: Found under a bush on a trail in CSUSB land land Cloudy but warm;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4102714610; Occurrence Remarks: I often forget the subspeciesΓÇª;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4103191296; Occurrence Remarks: Was alive but injured. Pushed it off the road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4102697225; Occurrence Remarks: I almost stepped on it.;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 4111958679; Occurrence Remarks: Unsuccessfully struck at one of the side blotched lizards;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4112170911; Occurrence Remarks: Likely the same individual in this observation: https://www.inaturalist.org/observations/160227559;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4116375617; Occurrence Remarks: Male combat;; Coordinate Uncertainty in Meters: 374.00000.

GBIFID: 1901085342; Occurrence Remarks: In a bush about 3 off the ground;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4138570679; Occurrence Remarks: These were two Helleri together, distinguished by coloring and by their rattles (one intact, one broken). The individual with the intact rattle appears to be a gravid female.;; Coordinate Uncertainty in Meters: 209.00000.

GBIFID: 4145680338; Occurrence Remarks: This snake (now in the blue) continues at the same location as observed days earlier (first observed 6/23/23 in Observation 169102655).;; Coordinate Uncertainty in Meters: 209.00000.

GBIFID: 4145249778; Occurrence Remarks: This same snake continues at the same location - last observed in the blue on 6/29/23. It appears to have shed already (7/4/23);; Coordinate Uncertainty in Meters: 209.00000.

GBIFID: 4145819418; Occurrence Remarks: These two snakes continue at this same location as first observed 6/23/23 (Observation 169102870). They were coiled together on 6/23/23. On this day, they were roughly 2 apart. The first two photos are one individual which appears to possibly be a gravid female. The 3rd and 4th photo is the second individual.;; Coordinate Uncertainty in Meters: 209.00000.

San Bernardino, California: 34.211872, -117.659336: : 7/6/2023: average_plant_enjoyer: 6 Jul 2023 :

GBIFID: 4946469125; Occurrence Remarks: It was about 3.5 feet (1 m) long. The very end of the snake, the rattler was about 1.5 to 2 inches long. Unfortunately, the rattler is not visible (behind the step) in this picture. I did not want to get too close for a better picture for obvious reasons. When it slithered off the path into the bushes, we could hear the distinctive sound of its rattler. Very exciting!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4177354332; Occurrence Remarks: Was curled up under bench. Virtually invisible. Was moved by staff as it was close to the pathway.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079725308; Occurrence Remarks: Under a log in dense alder riparian forest. Elevation 3,133 ft.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4407270639; Occurrence Remarks: Dead on road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4407479284; Occurrence Remarks: w/phone camera;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4407670342; Occurrence Remarks: Two rattlesnakes intertwined and very active!;; Coordinate Uncertainty in Meters: 108.00000.

GBIFID: 4407092274; Occurrence Remarks: Ambient temperature about 72┬░ F;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4936516982; Occurrence Remarks: Corbin Canyon Pretty amazing sight seen on the trail. The trail is very narrow and overgrown so this stopped me in my tracks and I had to turn back. I believe this young rattlesnake has a pocket gopher (Ill post that as a second observation just in case Im wrong). I didnt get very close; however I did crouch down to get a different angle of photo and when I did, the snake rattled and began to drag its prey to the side of the trail. I left then as I didnt want to disturb it any more;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4424102950; Occurrence Remarks: This is the same individual, in the same location, last observed in June 2023 in Observation 171075192 (and previous ones).;; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 34.19477, -117.1967: : 8/3/2015: kclarksdnhmorg: 3 Aug 2015 :
GBIFID: 3079779307; Occurrence Remarks: 2,882 ft. elevation.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1135529493; Occurrence Remarks: Subadult crossing paved road at 8:25 p.m.; warm, humid night. Poor cell phone photos.;; Coordinate Uncertainty in Meters: 197.00000.

GBIFID: 4936546806; Occurrence Remarks: Corbin Canyon Glad to see this today;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4507641079; Occurrence Remarks: Baby. We surprised it, and headed into the rocks. The little tail shake was just audible.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4522779986; Occurrence Remarks: My moms photo and spot. Per her description, Its a baby, 12 inches and nice coloration;; Coordinate Uncertainty in Meters: 1005.00000.

GBIFID: 4525262172; Occurrence Remarks: 9-year-old me thought that the rattlesnake, like our bearded dragon, might like a mealworm.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1143554614; Occurrence Remarks: Rattlesnake in Eaton Canyon.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4535929601; Occurrence Remarks: Found, very appropriately, on Rattlesnake Tail, while I was birding; although I believe the trail is named for its sinuous profile and not its fauna. The reptile seemed momentarily offended by my request to move off of the trail, but quickly caught on and made way for the equestrian traffic.;; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.159201, -117.827066: : 3/4/2024: Boaz Benaiah Solorio: 4 Mar 2024 :

GBIFID: 4596987533; Occurrence Remarks: Coiled up next to rocks;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4597476013; Occurrence Remarks: White Sage Trail, Conejo Open Space;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 4599847074; Occurrence Remarks: Stills from a video of them moving progressively through the brush;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 4599866108; Occurrence Remarks: Had just been hit by a car. Noticeably severe internal injuries and it sadly passed shortly after these photos were taken.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4606950025; Occurrence Remarks: I observed this same individual on 3/18/24 (see observation of that date) about 1/4 mile north/west of this location.;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.160417, -117.825527: : 4/8/2024: Boaz Benaiah Solorio: 8 Apr 2024 :

GBIFID: 4846873869; Occurrence Remarks: Found up the mountains behind CSUSB;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4846794916; Occurrence Remarks: Male, cuddling female. Likely this same individual: https://www.inaturalist.org/observations/206509580;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4847014267; Occurrence Remarks: Female, cuddling with a male.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852753020; Occurrence Remarks: Same couple from previous observation, observed during copulation. Previous observation of female: https://www.inaturalist.org/observations/207492383 Previous observation of male: https://www.inaturalist.org/observations/207492507;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852454659; Occurrence Remarks: I was actively looking for snakes while running. However, I missed this one. As I was running close to this curb I heard a hissing sound. I looked back to see the snake coiled.;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.185733, -117.32: : 4/22/2024: duenasdaniela: 22 Apr 2024 :
GBIFID: 4851877556; Occurrence Remarks: Slithering into the bush, very hot;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4852983644; Occurrence Remarks: Professionally handled and safely observed before release. Female spotted in a thick grassy brush next to a hillside. Noted as very heavy and speculated to be gravid. Animal was extremely calm and is also speculated to have been previously handled. Beautiful!;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 4875234314; Occurrence Remarks: Western Pacific Rattlesanke eating a Western Fence Lizard.;; Coordinate Uncertainty in Meters: 42.00000.

GBIFID: 4855110680; Occurrence Remarks: I observed, photographed and video recorded these two C. o. helleri copulating at approximately 11:00 A.M. yesterday morning. I am fairly certain these are the same individuals I observed in the exact same location in spring 2023. At that time I suspected they were a mated pair as I saw them at the same location on 3 successive visits to this spot. I will add the observation number(s) for those previous observations via an update to this note. I seem unable to upload the video as it was taken with my DSLR camera and not with my cell phone. Edit: The 2023 observation was: Observation 169102870 from 6/23/23. On 6/24/23, I observed the same two individuals together. see Observation 171076083. Here is a link to the video i uploaded to my Flickr account: Coordinate Uncertainty in Meters: 209.00000.

Los Angeles, California: 34.159989, -117.826407: : 5/9/2024: Boaz Benaiah Solorio: 9 May 2024 :

San Bernardino, California: 34.176373, -117.154151: : 5/7/2024: Delacey Rodriguez: 7 May 2024 :

GBIFID: 2235530718; Occurrence Remarks: Woosley Fire post-burn area;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4892178953; Occurrence Remarks: iNat suggestion;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2236284625; Occurrence Remarks: Crotalus oreganus helleri 10 Apr 2019 CA, SBE Co., CSUSB;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4901826480; Occurrence Remarks: Juvenile, had just a little button for a rattle. Found chilling underneath cover since it was hot out. Very cool, because Ive never seen the pattern of a helleri be so pronounced, Ive only seen the dark patterned adults in the past.;; Coordinate Uncertainty in Meters: 28874.00000.

Los Angeles, California: 34.2125, -118.172646: : 6/25/2024: Boaz Benaiah Solorio: 25 Jun 2024 :

GBIFID: 4903964134; Occurrence Remarks: Precious little cinnamon rolled up snakes, how I love you so :);; Coordinate Uncertainty in Meters: 28874.00000.

Ventura, California: 34.150688, -118.961494: : 4/7/2019: Nico Esteban Vega Ramirez: 7 Apr 2019 :

Los Angeles, California: 34.152443, -117.71842: : 10/23/2015: NHMLA Community Science Program: 23 Oct 2015 :
GBIFID: 1211979339; Occurrence Remarks: Observation and photo by David Perrin. Sent via rascals@nhm.org;; Coordinate Uncertainty in Meters: 837.00000.

GBIFID: 4919670086; Occurrence Remarks: Was 8 feet up on a steep slope.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1211986335; Occurrence Remarks: Took this photo about a year or so ago on the Claremont wilderness hiking park, about a mile in on the Burbank side. Large rattle snake with I think a kangaroo rat in its mouth. I counted 9 rattled on its tail. - David Perrin Observation and photo by David Perrin, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 348.00000.

GBIFID: 4926130913; Occurrence Remarks: Video of my exciting encounter! https://youtu.be/Hghr3OKgXDk?si=nTFcpNK2HjknPij9;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1211998243; Occurrence Remarks: Found at junction of Lower Monroe trail with Mystic Canyon Trail;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 4936785922; Occurrence Remarks: The snake was first observed on 8-23 2024 at 7:27 AM. It was found on the shoulder of the road. There was no sign of trauma. It did not move or use its tongue. There were several Western Yellowjackets starting to consume flesh on its tail. Over the next 57.5 hours I came back 9 times to document the consumption of the flesh by the Yellowjackets. I have included some of the photos here. I took time zero to be when I first saw the snake. Photo 1- Time zero, 13 Yellowjackets. Photo 2- 8 hrs later, 4 Yellowjackets. Since the head moved from its position at time zero, it may have been alive when I first saw it. It is possible that the head was moved by another person also. Photo 3- 23hrs 18 min later, 42 Yellowjackets. Photo 4- 35 hrs later, 65 Yellowjackets Photo 5- 47 hr, 45 min later, 55 Yellowjackets Photo 6- 57 hr 32 min later, 4 Yellowjackets;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 5007110654; Occurrence Remarks: 6 inches;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4937076898; Occurrence Remarks: Pulled off a few hundred meters away and walked back to try to get it out of the road, but either it was already hit or it got hit before I could get there..;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4950205847; Occurrence Remarks: Barely over one foot in length.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4952279782; Occurrence Remarks: Just over 1 ft long.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4952494449; Occurrence Remarks: Male combat dance. I have many more photos. Continued for about 20 minutes.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.167195, -118.787978: : 10/5/2024: TEAMVALOR786 Succulents and cacti, The future of nature is in your hands: 5 Oct 2024 :

GBIFID: 4976561619; Occurrence Remarks: Adult, ca. 2.5 ft length, found dead on dirt road just up from WCA Building. Not run over, but head damage suggests someone stupid smashed it with a rock.;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 4976456934; Occurrence Remarks: Juvenile, at dusk in a creek-watershed area, crossing a trail.;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 4976593978; Occurrence Remarks: New to the area, what kind of snake is this? Looks like a baby;; Coordinate Uncertainty in Meters: 2416.00000.

GBIFID: 2244270820; Occurrence Remarks: Thanks Zack!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2251951963; Occurrence Remarks: Crotalus oreganus helleri 28 May 2019 CA, SBE Co., CSUSB;; Coordinate Uncertainty in Meters: 1.11000.

Los Angeles, California: 34.151413, -117.97124: : 2/3/2025: Boaz Benaiah Solorio: 3 Feb 2025 :

GBIFID: 5069929824; Occurrence Remarks: Neonate, barely has their first button. Less than a foot long.;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 5070089328; Occurrence Remarks: We encountered this young rattlesnake on the way up the hill. When we returned, we found that some thoughtless and ignorant person had struck it and left it mortally wounded. A sobering reminder of the callous disregard for snakes that many people still exhibit, and a renewed invitation to love and protect the natural world even more.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5077001065; Occurrence Remarks: First rattler of the year for me, and it is just a little fella;; Coordinate Uncertainty in Meters: 76.00000.

GBIFID: 2252023067; Occurrence Remarks: Juvenile 10 inches;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5108351403; Occurrence Remarks: Someone must have killed it :(;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 5134136910; Occurrence Remarks: Juvenile southern pacific rattlesnake;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5133928860; Occurrence Remarks: Juvenile southern pacific rattlesnake;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5134034907; Occurrence Remarks: Juvenile southern pacific rattlesnake;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.173876, -117.889127: : 4/7/2025: Boaz Benaiah Solorio: 7 Apr 2025 :

GBIFID: 5133459349; Occurrence Remarks: INaturalist app loads an incorrect time for the observation and wonΓÇÖt let me change it. Will fix later on laptop.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.162286, -117.8201: : 4/4/2026: Margaret Kaneb: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 4936384589; Occurrence Remarks: Las Virgenes Canyon Six months after containment of the Woolsey Fire;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 891156221; Occurrence Remarks: Melanistic adult, apparently having recently feed.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2851021394; Occurrence Remarks: Dull and listless. Assuming getting ready to shed.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 5168180387; Occurrence Remarks: About eighteen inches long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5167983392; Occurrence Remarks: A little guy. Just who I was looking for :);; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5168499619; Occurrence Remarks: Escorted off the road. Had to direct one car around the snake.;; Coordinate Uncertainty in Meters: 18.00000.

San Bernardino, California: 34.149875, -116.94648: : 5/19/2025: california_every_reptile: 19 May 2025 :

GBIFID: 5187748275; Occurrence Remarks: juvenile almost bit my fucking idiot lover so he caught it in a trash bag and then released it??? it slithered away. so like, a lil aggressive but knew when to quit. my lover is now banned from approaching venomous snakes.;; Coordinate Uncertainty in Meters: 2006.00000.

GBIFID: 1265562495; Occurrence Remarks: Slowly moving across trail, seemed that he didnt care I moved closer to take pictures. Counted 9 rattles, was about 3 inches thick (older snake). Several snakes were seen by others on the trail.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1265572772; Occurrence Remarks: Gabrieleno Trail;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 5216868624; Occurrence Remarks: At ~9620 elevation.;; Coordinate Uncertainty in Meters: 24.00000.

Los Angeles, California: 34.207497, -118.168228: : 7/6/2025: Fox (prefer to not give real name): 6 Jul 2025 :

GBIFID: 1586086373; Occurrence Remarks: Observation and photo submitted by @talleyjones via Instagram #NatureinLA;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5230132687; Occurrence Remarks: Juvenile rattlesnake;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 899940569; Occurrence Remarks: This juvenile snake was resting on top of my patio table. The photo was taken after I scooped him into a bucket to keep him (and my dogs) safe. Now relocated back into the wild.;; Coordinate Uncertainty in Meters: 6078.00000.

GBIFID: 1265903584; Occurrence Remarks: In Monrovia Canyon Park Trail.;; Coordinate Uncertainty in Meters: 159.00000.

GBIFID: 2397518792; Occurrence Remarks: Large Pacific Western Rattlesnake next to road on Cobal Canyon Motorway. O8:30 hours Friday 8/23;; Coordinate Uncertainty in Meters: 79.00000.

GBIFID: 2422970798; Occurrence Remarks: Dead on side of road.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2423082582; Occurrence Remarks: First discovered carcass at 7:30 AM, there were 3 Western Yellow Jackets feeding on the tail and one on the head (second picture). I came back 5 more times to observe the consumption of the carcass by the yellow jackets. At 9:10 AM, there were 3 Yellow Jackets on the head and none on the tail (third picture). At 11:30 AM there were no Yellow Jackets as it was probably too hot (fourth picture). At 4:15 PM, there were 7 Yellow Jackets (fifth picture). At 7:00 PM, there were 19 Yellow Jackets, all at the upper portion (pictures 1 and 6). The next morning at 7:15 AM, the carcass was gone. There were a few bones with some flesh being eaten by Yellow Jackets. Other references to this observation are https://www.inaturalist.org/observations/32776472 , https://www.inaturalist.org/observations/32777138 and https://www.inaturalist.org/observations/32777936;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 1269580906; Occurrence Remarks: Sent to me by a friend;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936843223; Occurrence Remarks: Las Virgenes Canyon At least 5-6 feet long--but area too small for me to get a full shot with a telephoto;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2850623451; Occurrence Remarks: In the Meadow, 15 feet away from the crowds.;; Coordinate Uncertainty in Meters: 66.00000.

GBIFID: 2423187731; Occurrence Remarks: This rattlesnake was facing a wood rat on a fire road. Neither animal was moving. We had pity on the rat so tried to distract the snake by gently throwing pebbles at it, but it wouldnΓÇÖt budge. We did the same to the rat but it wouldnΓÇÖt budge. They were oblivious of our presence. After a few minutes we turned around and left. We are empathy and didnΓÇÖt want to see the outcome. We had never encountered such a scene before in all our years of hiking. We have found wood rat mounds in the area, they are beautiful structures.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 891714203; Occurrence Remarks: An adult Southern Pacific Rattlesnake has taken up residence in a crawlspace under an elevated house near the parks garden. The sequence of photographs were taken in approximately 15 minute intervals between 9:07 and 9:37 AM, and show the rattlesnake likely trying to regulate the amount of heat it may have been trying to absorb from the sun.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 891714356; Occurrence Remarks: A juvenile Southern Pacific Rattlesnake that was found coiled up beside one of the corners of the house next to the parks garden at mid-day.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 1273857754; Occurrence Remarks: tucked away in the canyon next to trail;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 891721117; Occurrence Remarks: Relocated from a construction site.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1291144098; Occurrence Remarks: On shoulder of road, unresponsive, suspected road kill;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 891730559; Occurrence Remarks: A friend and I encountered an adult Southern Pacific Rattlesnake just outside of the parks native plant garden. We then observed the snake, as it first sought cover under the concrete of the drainage pipe, then squeezing between the nearby boulders to reach the thicker plants for better cover.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1291159897; Occurrence Remarks: I photographed this snake at Rancho Sierra Vista / Satwiwa in Newbury Park, California.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 1305142407; Occurrence Remarks: On Big Dalton Canyon Road;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 1305142429; Occurrence Remarks: On Big Dalton Canyon Road about 0.5 mile from another Southern Pacific Rattlesnake;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 2576401090; Occurrence Remarks: First rattlesnake sighting of the year for me... while heading down the trail behind the library.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1305163280; Occurrence Remarks: One observer claimed he saw 15 buttons on the rattle; in my photo only 9 visible and 15 seems an implausible number. Under concrete / stones by the Tennessee Warbler stakeout in Hahamongna Park. Also reported present on 26 August 16.;; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.182635, -118.27644: : 6/22/2014: NHMLA Community Science Program: 22 Jun 2014 :
GBIFID: 1305172175; Occurrence Remarks: This was taken in June 2014, after the fire that was burning in the hills behind the library. - Brand Library Observation and photo by Brand Library, sent via Twitter @brandlibrary https://twitter.com/brandlibrary/status/761641616989761537;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 2634029312; Occurrence Remarks: Snake shed, know rattler seen very close to this area. Rubbed off along logs. OLYMPUS DIGITAL CAMERA;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1315062566; Occurrence Remarks: About 3-feet, this rattlesnake was found dead alongside Altadena Drive adjacent to Eaton Canyon.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2611124773; Occurrence Remarks: Juvenile rattlesnake on road at dusk during exceptionally warm weather in 80s.;; Coordinate Uncertainty in Meters: 265.00000.

GBIFID: 2611266595; Occurrence Remarks: Crotalus helleri 29 Apr 2020 CA, SBE Co., CSUSB;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2611339549; Occurrence Remarks: Was eating a western fence lizard when first seen. The lizard was spit out when I approached to take a picture.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2611358546; Occurrence Remarks: Crotalus helleri 30 Apr 2020 CA, SBE Co., CSUSB;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079499794; Occurrence Remarks: Same individual observed here.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1453467004; Occurrence Remarks: Rattlesnake and associated trail on the road to Potato Mountain . The snake was seen casting back and forth, unaware of my presence. He appears to have been following the narrower trail cutting across the road, veering off, then rejoining the trail. Suspect he was searching for a prey animal he had struck.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2814101515; Occurrence Remarks: Observed for about 10 minutes. It appeared to be searching for a recently envenomated prey item. The snake was circling the area for the 10 minutes I watched it, tongue-flicking, and moving its head side to side. It crossed the paved trail/road multiple times searching along each road edge. About 30 people walked by as this was happening.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2823070675; Occurrence Remarks: Just ate a meal.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 2826513477; Occurrence Remarks: see additional photos;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 2826297098; Occurrence Remarks: During my morning run I came upon some hikers carrying this dead Southern Pacific Rattlesnake. I looks like yellow jackets had started to eat the flesh around the head. The rattle was cut off. I hope it was not intentionally killed.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1457595666; Occurrence Remarks: A young adult Southern Pacific Rattlesnake that was found concealed in the grass, next to a massive pile of timber. The rattlesnake was briefly relocated to an open space for photography, then returned to the timber pile where he was discovered.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 2860085470; Occurrence Remarks: Track, We watched it cross the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2851292098; Occurrence Remarks: Late in day. Looked like recent shed.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2850901658; Occurrence Remarks: Seen after 1am at night hiking down Sam Merrill trail in Alta dena.;; Coordinate Uncertainty in Meters: 1105.00000.

GBIFID: 2851309335; Occurrence Remarks: This was a good size rattler, but we found it dead in the gutter.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 1500242533; Occurrence Remarks: Just off the road in the grass;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500258147; Occurrence Remarks: Sadly deceased, likely hit by vehicle. I had been at the location around 15 mins prior and was not there, newly deceased.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500343372; Occurrence Remarks: !!! First rattlesnake Ive seen in the wild!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2873857641; Occurrence Remarks: Juvenile, dead on shoulder of road.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2873881073; Occurrence Remarks: Very small- about 7 inches long.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4936332388; Occurrence Remarks: Corbin Canyon I would guess about 6 feet long and well fed;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1305177652; Occurrence Remarks: found near trail, lying very still for several minutes until moving quickly out of sight;; Coordinate Uncertainty in Meters: 842.00000.

GBIFID: 2963832990; Occurrence Remarks: Juvenile Crotalus sp. crossing a quiet road.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 1563435051; Occurrence Remarks: Catching some rays;; Coordinate Uncertainty in Meters: 91.00000.

GBIFID: 899975895; Occurrence Remarks: This guy was resting. It was sort of close to the track.;; Coordinate Uncertainty in Meters: 1794.00000.

GBIFID: 899979386; Occurrence Remarks: Found under a pile of logs.;; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.167295, -117.630206: : 9/7/2020: madisonnhartman: 7 Sep 2020 :

GBIFID: 910497800; Occurrence Remarks: Cheeseboro site 9;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3018150296; Occurrence Remarks: 12-16ΓÇ¥ long;; Coordinate Uncertainty in Meters: 527.00000.

GBIFID: 3039344841; Occurrence Remarks: About 63┬░ F outside.;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 1572379466; Occurrence Remarks: Large individual on a social trail.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1572379518; Occurrence Remarks: Medium sized individual taking cover in a small hole during the heat of the day.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572381854; Occurrence Remarks: A youngster out on a warm night. Could be about a foot long if he stretched out.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911505054; Occurrence Remarks: (thanks to Sophie for the find). It didnt want to show its head or move off the trail. ~2 feet long.;; Coordinate Uncertainty in Meters: 1.00000.

San Bernardino, California: 34.179345, -117.628518: : 4/2/2021: average_plant_enjoyer: 2 Apr 2021 :

GBIFID: 3079760219; Occurrence Remarks: Small coiled snake. Rattler??;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 923921390; Occurrence Remarks: Yearling;; Coordinate Uncertainty in Meters: 1519.00000.

GBIFID: 3112887621; Occurrence Remarks: Approximately 36ΓÇ¥ long;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 3112443735; Occurrence Remarks: These two were up to some romantic shenanigans just a few feet of the main trail.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1640061738; Occurrence Remarks: The tail is missing. It looks like it was cut off. Hopefully it was not intentionally killed.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 3112927137; Occurrence Remarks: Young one, close to where saw adult. Rolled into ball when backed up. Temp 82;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3112617131; Occurrence Remarks: Temp 82;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 3112592679; Occurrence Remarks: Sub-adult;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3112834933; Occurrence Remarks: Saw it alive, but pulled over too late to save it from an oncoming car :(;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3112886939; Occurrence Remarks: Very young snake was about 15;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3117774705; Occurrence Remarks: Found in the outdoor stairwell of the Biology building. I translocated it in a bin (3rd pic) to the natural area off campus;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1839277700; Occurrence Remarks: Rattle snake;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3124719833; Occurrence Remarks: Snake was crossing dirt road at Wildwood Park upstream from Paradise Falls. Pretty good size at around 3 feet long. Tried to get closer pics but it rattled at me so I took the hint.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4067350475; Occurrence Remarks: For scale, those are sycamore leaves in the background. Note: Photo taken by my fatherΓÇÖs neighbor, who is not on iNaturalist.;; Coordinate Uncertainty in Meters: 437.00000.

GBIFID: 3314465481; Occurrence Remarks: Warming itself on the road in the southern San Bernardino Mountains;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3328026796; Occurrence Remarks: Same individual observed here.;; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.158342, -117.112808: : 6/4/2021: melaniethepeach: 4 Jun 2021 :

GBIFID: 3333303865; Occurrence Remarks: Ambient temperature about 85┬░ F;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3333333404; Occurrence Remarks: Southern Pacific Rattlesnake, Hahamongna;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3355765709; Occurrence Remarks: I stood right next to this big snake without seeing it, until it rattled. This shows how this species, at least, prefers to give fair warning before biting, for which I am truly grateful. Estimated 3-4 feet long. Ambient temperature about 75┬░ F.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3384804283; Occurrence Remarks: Moving through sage brush- never rattled, just a great guy!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3384470739; Occurrence Remarks: Found approximately 10 feet behind its probable sibling heading towards the brush.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3384561868; Occurrence Remarks: Very small hatchling;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 3385005293; Occurrence Remarks: Very chill snake. Hung out all day. Too near door, so I moved home back up into the National Forest. Video full length cruising back into brush: https://instagram.com/p/CUEOlP5A9y_/;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 3408250637; Occurrence Remarks: Fished this dead baby rattlesnake out of the pool.;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.198142, -118.168412: : 7/2/2026: utsuprautinfra: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Heard it as it started to rattle. Was on the crawl right next to the creek.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found by a some hikers who pointed it out to us. By that time, it had gone under a boulder (photo 1), but it came back out to assume an ambush posture when we checked in on it an hour later.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Seen stretched out right next to the creek. Took a few sips of water while we watched it, but it eventually crawled off behind a rock, likely in response to our presence. Easily a 3.5ft individual.; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.208225, -118.170533: : 7/5/2026: ramoizote: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.20182, -118.214112: : 7/7/2026: peppersghost: 7 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.157986, -117.82972: : 8/22/2025: gavitp: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.148875, -117.723908: : 8/26/2025: srweinstein: 26 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.166222, -117.815605: : 7/10/2026: gavitp: 10 Jul 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Los Angeles, California: 34.157291, -117.999677: : 9/8/2025: Dave Campbell: 8 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.161725, -117.821625: : 9/8/2025: gavitp: 8 Sep 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Posting for someone without an inat account; Coordinate Uncertainty in Meters: 28.00000.

Los Angeles, California: 34.167913, -117.731986: : 7/13/2026: Matt Gruen: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Occurrence Remarks: First of 2 seen thirty feet apart.; Coordinate Uncertainty in Meters: 20.00000.

San Bernardino, California: 34.182323, -116.926449: : 9/13/2025: Gino Nearns, Ph.D.: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.164525, -117.816697: : 7/18/2026: gavitp: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 34.161614, -117.821717: : 7/18/2026: gavitp: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Los Angeles, California: 34.205228, -118.018211: : 7/19/2026: kadenhart06: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.208338, -118.018355: : 7/19/2026: wyattjbedard: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.207028, -118.168153: : 7/19/2026: thenewtking: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Presumably killed in flash floods occurring on September 18, 2025.; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.153026, -118.700447: : 9/20/2025: pulaskigf: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 345.00000.

Occurrence Remarks: Juvenile, 1.5 ft.; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: 1.5ft; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Just over 1ft.; Coordinate Uncertainty in Meters: 28.00000.

Los Angeles, California: 34.189401, -118.246669: : 8/31/2025: Joe Newlin: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 43.00000.

Ventura, California: 34.15032, -118.860824: : 5/28/2026: Zeev NG: 28 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.339558, -117.17682: : 4/24/2026: ronniejones03: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 35.00000.

Los Angeles, California: 34.317753, -118.084045: : 8/11/2025: california_every_reptile: 11 Aug 2025 :

Los Angeles, California: 34.253465, -118.076149: : 3/19/2026: Tom Mills: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.314246, -118.343161: : 10/20/2025: herphendrie: 20 Oct 2025 ; Coordinate Uncertainty in Meters: 23.00000.

Ventura, California: 34.295854, -119.230767: : 10/31/2025: Aiden Pacheco: 31 Oct 2025 ; Coordinate Uncertainty in Meters: 171.00000.

Los Angeles, California: 34.255605, -118.39116: : 10/30/2025: california_every_reptile: 30 Oct 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.282417, -117.208245: : 7/25/2026: brophy: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.221363, -116.84517: : 7/25/2026: jackjack1098: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 41.00000.

Los Angeles, California: 34.257825, -117.75225: : 7/26/2026: Diego Balbuena: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.228571, -118.804777: : 3/18/2026: taniargb: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Ventura, California: 34.250317, -118.815464: : 9/11/2024: Liam Bertrand: 11 Sep 2024 ; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3013894329; Occurrence Remarks: Melanistic morph;; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.280627, -118.659369: : 10/18/2025: dupindersingh1: 18 Oct 2025 ; Coordinate Uncertainty in Meters: 69.00000.

Los Angeles, California: 34.27578, -118.169792: : 4/12/2025: ramoizote: 12 Apr 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Ice House Canyon Trail, Mt Baldy; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.292312, -119.226008: : 5/29/2026: EmilyP: 29 May 2026 ; Coordinate Uncertainty in Meters: 47.00000.

Los Angeles, California: 34.216346, -118.163789: : 2/25/2026: Russ DiFiori: 25 Feb 2026 ; Coordinate Uncertainty in Meters: 50.00000.

Los Angeles, California: 34.216766, -118.14305: : 5/10/2026: benmiller53: 10 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: A security guard pointed it out and told me that it lives in a hole by the base of a tree where it was found. Likely sitting in ambush waiting for a small lizard to come by. Accidentally scared it back into its hole when I tried to get a second shot of it at a different angle.; Coordinate Uncertainty in Meters: 7.00000.

Ventura, California: 34.299438, -118.832307: : 4/15/2026: BeFaeDoCrimesX (FaeCrimesX): 15 Apr 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: Second day in a row of encountering this rattlesnake.; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.269337, -118.63182: : 4/10/2026: edwcham: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Probably a southern Pacific Rattlesnake; Coordinate Uncertainty in Meters: 28739.00000.

Ventura, California: 34.30823, -118.853653: : 4/19/2026: Ariana Thomas: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Third day in a row encountering this rattlesnake. Currently ΓÇ£in blueΓÇ¥.; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Fourth day in a row encountering this rattlesnake.; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.296345, -117.508484: : 4/21/2026: sangsterj: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.352387, -117.168228: : 4/24/2026: ronniejones03: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.33968, -117.176942: : 4/24/2026: ronniejones03: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Ventura, California: 34.312625, -118.720351: : 4/24/2026: drodsosa: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Bernardino, California: 34.284233, -117.350005: : 4/24/2026: Andrew: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Occurrence Remarks: Sixth time encountering this rattlesnake and second time in a row this week.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Fifth time encountering this rattlesnake.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Eighth time encountering this rattlesnake and fourth time in a row this week. WasnΓÇÖt able to get a good picture of it the previous day, but it was the seventh time encountering this rattlesnake and third time in a row this week.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: 9th time encountering this rattlesnake.; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.300175, -118.830244: : 4/27/2026: annika_pratt: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 41.00000.

Occurrence Remarks: Drowned?; Coordinate Uncertainty in Meters: 30.00000.

Los Angeles, California: 34.294383, -118.361195: : 5/14/2026: zshiba: 14 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.251912, -118.246475: : 5/17/2026: Celine Lo: 17 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.26612, -116.890042: : 5/12/2026: Joel Brown: 12 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

San Bernardino, California: 34.266252, -116.889388: : 5/12/2026: Joel Brown: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.266747, -116.899047: : 5/22/2026: notacop: 22 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Rice Canyon First of two seen; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: East & Rice Canyon 2nd of two seen; Coordinate Uncertainty in Meters: 15.00000.

Ventura, California: 34.33635, -118.869072: : 5/25/2026: Jacob: 25 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.244362, -117.924295: : 4/4/2026: Andrew Arellano: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Tiny baby rattlesnake was crossing the road, and I almost hit it descending on my bike. Fortunately for both of us I swerved, but as I went by she coiled up. I stopped a ways away and snapped these pics. After a few seconds, she decided I was not an issue and slithered off the road. Maybe about a foot long.; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.250622, -118.252828: : 5/26/2026: Brenton Cooper: 26 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.221118, -118.572404: : 5/11/2026: california_every_reptile: 11 May 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.252022, -117.883773: : 8/10/2025: Matthew Bokach: 10 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3764373008; Occurrence Remarks: Had a fairly yellow underside I gave this snake a lot of space, so photos arent the best;; Coordinate Uncertainty in Meters: 17.00000.

Los Angeles, California: 34.311957, -118.514272: : 7/16/2025: Armen Chivichyan: 16 Jul 2025 ; Coordinate Uncertainty in Meters: 450.00000.

Ventura, California: 34.2181, -118.8147: : 2/9/2026: Sherrie: 9 Feb 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Ventura, California: 34.22014, -118.733356: : 2/28/2026: thomasrr: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 113191.00000.

Los Angeles, California: 34.293499, -118.604079: : 3/1/2026: gfj6: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 343.00000.

Ventura, California: 34.284523, -119.265282: : 3/1/2026: amorgan2: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.218463, -118.814513: : 3/1/2026: firstwinter: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: There are seeps of tar in this area, and I think the snake must have slithered through some.; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: It was rather slow. Perhaps coming out of brumation/ hibernation?; Coordinate Uncertainty in Meters: 102.00000.

Los Angeles, California: 34.27041, -118.219259: : 3/5/2026: california_every_reptile: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Occurrence Remarks: First juvenile to visit this year; Coordinate Uncertainty in Meters: 8.00000.

Ventura, California: 34.243231, -118.885208: : 3/12/2026: Zack Abbey: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.291039, -118.810257: : 3/13/2026: Skylar Feltman: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.310525, -118.73396: : 3/14/2026: Peggy Wu: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.312052, -118.527873: : 3/15/2026: gfj6: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 679.00000.

Ventura, California: 34.321803, -118.664637: : 3/15/2026: Abe Achkinazi: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.253681, -117.569318: : 3/27/2026: Kyle Long: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.305469, -119.197369: : 4/25/2026: Dawn Currit: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.221935, -118.807079: : 4/29/2026: firstwinter: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 558.00000.

Los Angeles, California: 34.270703, -118.104575: : 4/9/2026: mojavemama: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Ventura, California: 34.22197, -118.798997: : 3/16/2026: Sherrie: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.276572, -118.295753: : 7/17/2026: wgossett: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: 12th time encountering this rattlesnake and 3rd time in a row this week.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: 11th time encountering this rattlesnake and 2nd time in a row this week. WasnΓÇÖt able to get a good picture of it the previous day, but it was the 10th time encountering this rattlesnake. This means that as of the date of this observation this rattlesnake has been in the same area for 2 weeks.; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.28532, -119.261275: : 4/16/2026: Dustin Harris: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Ventura, California: 34.215649, -118.905479: : 4/18/2026: Anthony: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.289611, -118.553313: : 4/30/2026: Tom Mills: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.348319, -118.451399: : 4/30/2026: Tom Mills: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Occurrence Remarks: 13th time encountering this rattlesnake and 4th time in a row this week.; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.304783, -118.520403: : 5/2/2026: Norm Herr: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.253919, -117.568342: : 5/3/2026: Rachel: 3 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.311201, -118.512991: : 5/6/2026: cgerry: 6 May 2026 ; Coordinate Uncertainty in Meters: 59.00000.

Ventura, California: 34.29969, -118.83099: : 3/26/2026: Sky: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.34008, -117.176978: : 5/1/2026: z-rex: 1 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Bernardino, California: 34.300398, -116.792975: : 5/8/2026: gavinaquila: 8 May 2026 ; Coordinate Uncertainty in Meters: 67.00000.

Ventura, California: 34.299712, -118.831003: : 3/26/2026: Jacob Barroquillo: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Ventura, California: 34.298563, -118.832092: : 3/26/2026: Jacob Barroquillo: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Ventura, California: 34.298586, -118.83205: : 3/26/2026: Joseph Gonzales: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.308132, -119.198483: : 2/5/2026: Dominick Mcgrath: 5 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: About 12ΓÇ¥ long; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.354105, -117.153359: : 9/22/2025: california_every_reptile: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.354256, -117.070423: : 9/22/2025: california_every_reptile: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.287578, -117.080521: : 9/22/2025: california_every_reptile: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.300002, -118.831047: : 3/26/2026: Natalie Cervantes: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 90.00000.

Ventura, California: 34.29952, -118.830968: : 3/26/2026: Natalie Cervantes: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 76.00000.

Ventura, California: 34.330697, -118.682715: : 3/16/2026: stinkmosh: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.222878, -118.80358: : 3/16/2026: Sherrie: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.289663, -119.226325: : 3/18/2026: petewise88: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.273249, -118.024813: : 3/18/2026: california_every_reptile: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.337162, -118.837212: : 3/19/2026: Cormeys: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.292444, -119.224447: : 3/20/2026: Hope Hespenheide: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 176.00000.

Los Angeles, California: 34.27308, -118.612816: : 3/22/2026: dlbowls: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.262128, -118.152786: : 3/22/2026: Siwin Lo: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

San Bernardino, California: 34.287197, -117.374313: : 3/22/2026: BotFan01: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.237675, -118.358933: : 3/24/2026: Alyssa Flores: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Los Angeles, California: 34.295333, -118.395203: : 3/24/2026: Alex Lee: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Ventura, California: 34.280208, -118.648842: : 3/25/2026: Fredis Duran: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.298658, -118.832092: : 3/26/2026: Sean Wilcox: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.253662, -117.56935: : 3/27/2026: frizzywitch: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Bernardino, California: 34.277942, -117.024278: : 3/29/2026: Jason Guo Θâ¡τ┤½σ«╕: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.320707, -118.39786: : 3/21/2026: froogi: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 93.00000.

Ventura, California: 34.306672, -119.199201: : 3/30/2026: alexhanrahan1: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.258963, -117.489188: : 3/28/2026: Eliott Brammer: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.309159, -118.525998: : 3/28/2026: Kristina Hill: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 2172.00000.

Ventura, California: 34.22068, -118.812762: : 4/1/2026: Sherrie: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Ventura, California: 34.293888, -118.685263: : 4/4/2026: kathrynahancock: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4446.00000.

Los Angeles, California: 34.348647, -118.545447: : 4/7/2026: Christopher Moore: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 53.00000.

Los Angeles, California: 34.315567, -118.517672: : 2/27/2026: gagev: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 232.00000.

Los Angeles, California: 34.217042, -118.175937: : 4/6/2026: Boaz Benaiah Solorio: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 194.00000.

Los Angeles, California: 34.216217, -118.167736: : 3/27/2026: Jenna Carpenter: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: A friendΓÇÖs photo; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.292988, -118.555341: : 3/22/2026: graysenr: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 81.00000.

Ventura, California: 34.302578, -119.256462: : 4/11/2026: Leslie Huerta Gonzalez: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Ventura, California: 34.294788, -119.276863: : 4/11/2026: Leslie Huerta Gonzalez: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Bernardino, California: 34.286598, -117.344534: : 4/11/2026: jeelbyee: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 15617.00000.

Ventura, California: 34.295245, -119.223025: : 4/22/2026: Neill: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.350403, -118.545985: : 5/30/2025: Cedarwood Outdoor School: 30 May 2025 ; Coordinate Uncertainty in Meters: 194.00000.

Occurrence Remarks: This one was just minding its business under a little brush until my dog tried to go sniff it. It ran off or slithered.; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.249673, -118.619929: : 6/9/2025: Vincent Lamos: 9 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.267991, -118.64959: : 5/26/2025: Vincent Lamos: 26 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Juvenile; Coordinate Uncertainty in Meters: 1.11000.

Ventura, California: 34.283609, -119.233481: : 6/18/2025: James Dean: 18 Jun 2025 ; Coordinate Uncertainty in Meters: 111.00000.

San Bernardino, California: 34.271663, -117.633117: : 7/8/2025: sirus2: 8 Jul 2025 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 34.267279, -118.145938: : 6/4/2026: bibmik: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Los Angeles, California: 34.23832, -118.35903: : 6/10/2026: Alyssa Flores: 10 Jun 2026 ; Coordinate Uncertainty in Meters: 35.00000.

Los Angeles, California: 34.303178, -118.324837: : 6/7/2026: Mia Levy: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.254353, -118.152092: : 6/10/2026: Polly McConnell: 10 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.34104, -118.108694: : 6/13/2026: Alicia Di Rado: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Had just eaten something, likely a small rabbit or a ground squirrel. But a very large snake even without the meal.; Coordinate Uncertainty in Meters: 28846.00000.

Occurrence Remarks: Black morph; Coordinate Uncertainty in Meters: 568.00000.

Los Angeles, California: 34.24225, -117.859413: : 6/17/2026: Leonard Zamarripa: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 4580.00000.

San Bernardino, California: 34.233736, -117.141856: : 7/12/2026: Jessika Vazquez Guadarrama: 12 Jul 2026

Occurrence Remarks: Third DOR SoPac seen this night, though the road was fairly quiet. This snake was very fresh and must have been hit by one of the few cars still on the road.; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.217661, -116.841133: : 6/28/2026: Ecologist Steve: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 372.00000.

Ventura, California: 34.266202, -119.174728: : 6/28/2026: barbara_kim1: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.291953, -119.197778: : 6/28/2026: Dominick Mcgrath: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.355152, -118.185619: : 7/9/2026: california_every_reptile: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.352612, -118.560738: : 6/29/2026: giffomancer: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 29.00000.

Los Angeles, California: 34.303798, -118.241761: : 6/15/2026: california_every_reptile: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.258938, -118.200562: : 6/28/2026: amaya0827: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Ventura, California: 34.318347, -118.79405: : 10/9/2025: Matt Brady: 9 Oct 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.289028, -118.868028: : 10/10/2025: hammhead292: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Los Angeles, California: 34.356492, -118.569058: : 4/19/2026: Alex Bogdanov: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.24955, -118.253319: : 3/22/2026: mreys0329: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 188.00000.

Los Angeles, California: 34.309396, -118.513617: : 6/11/2024: Mary Fenwick: 11 Jun 2024 ; Coordinate Uncertainty in Meters: 307.00000.

Los Angeles, California: 34.301362, -118.361528: : 9/27/2025: Ryan Nordberg: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 14.00000.

San Bernardino, California: 34.27848, -117.3357: : 10/19/2025: Justin M. Wood: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Ventura, California: 34.30123, -119.267425: : 6/24/2025: erreyes: 24 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.27003, -118.210708: : 9/25/2025: mojavemama: 25 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3760227612; Occurrence Remarks: On trail in bloody pieces;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1038334167; Occurrence Remarks: Southern Pacific Rattlesnake on trail, by stream, in shade.;; Coordinate Uncertainty in Meters: 236.00000.

GBIFID: 3455411693; Occurrence Remarks: What rattler is this?;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3466271981; Occurrence Remarks: Long Canyon Trail;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 3705420832; Occurrence Remarks: Bottom middle of pic;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3743323483; Occurrence Remarks: Danger bush ≡ƒÿ│;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3747007102; Occurrence Remarks: Mating pair under a board. Board replaced after photos taken.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3747362392; Occurrence Remarks: Super cute baby was calm;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1838335252; Occurrence Remarks: DOR, Angeles Crest Highway. Salvaged and deposited at the Natural History Museum of Los Angeles County (GBP 3844).;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3760148393; Occurrence Remarks: Long Canyon Trail;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3759993706; Occurrence Remarks: Juvenile rattlesnake basking in a sunny spot on a log over the creek.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3764222847; Occurrence Remarks: Missing itΓÇÖs head;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3764201871; Occurrence Remarks: We were conducting a reptile photo shoot with Moses Sparks when this wild helleri crawled right through the set!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3773244968; Occurrence Remarks: Nice warm day for sunbathing. This individual has been seen multiple times in this same area this past week. Possible den nearby.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3773361793; Occurrence Remarks: My husband took the photosΓÇªI would have gotten closer to get a better view. This was taken at our local crescenta vallley park.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3773800025; Occurrence Remarks: Found it inside a cabinet that was thrown out in an abandoned area in Sunland-Tujunga. Basically in the Angeles national forest. Not too knowledgeable on the different species and subspecies of rattlers in SoCal;; Coordinate Uncertainty in Meters: 49.00000.

GBIFID: 3784654743; Occurrence Remarks: Warming up on the road before I accidentally scared it off into the brush;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3784747061; Occurrence Remarks: Found dead on paved road into park. Chaparral hillsides. Missing head and rattles.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 3802482779; Occurrence Remarks: One of two rattlesnakes I encountered while in the area of the Old Youth Camp. Fortunately, both were very polite, and when aware of my presence let me know they were nearby.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859913248; Occurrence Remarks: Old pic. of my last visit in Ventura;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3858265260; Occurrence Remarks: got closer than I should have and got hissed at. not rattled at, though.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936209176; Occurrence Remarks: The 2nd photo is difficult to see, but the head is just slightly visible at the entrance of the hole before this fella ducked back inside;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3858395497; Occurrence Remarks: Found deceased in the middle of the trail. Likely caused by rodenticide as there were no wounds;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1065598331; Occurrence Remarks: Caught in a building on a horse ranch; I was asked to relocate it. In the past, this ranch would kill any snakes they caught. Less than 25cm long, with two buttons on rattle.;; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.297913, -116.820663: : 6/5/2022: Joseph Decruyenaere: 5 Jun 2022 :

Los Angeles, California: 34.348692, -117.673498: : 6/8/2022: No generative AI for iNat!: 8 Jun 2022 :

GBIFID: 3860447526; Occurrence Remarks: Crossed Angeles Forest Highway and went into chaparral. Air temp 85 degrees (F). Snake length 70-80 cm as a guess (this is a wide angle lens shot). A lot of traffic so I was surprised it did not get hit.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3860497711; Occurrence Remarks: A decent-sized snake, a few feet long, out and about. It slithered around some rocks and brush before taking shelter under a rock.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3860751928; Occurrence Remarks: Found coiled up next to California Buckwheat, retreated when our group came closer to observe it. Left a depression in the soil, seemingly trapping humidity underneath.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3859187387; Occurrence Remarks: Watched this individual eat a western fence lizard and then sunbathe in the mulch afterwards;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3860624712; Occurrence Remarks: I saw this small snake tightly coiled in deep shadow near the creek below the Burkhart Trail. I prodded gently with a stick so I could get a view of its size. It sluggishly moved into a crevice under a rock. You can compare its length to the Jeffrey Pine needle next to it.;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 3873730731; Occurrence Remarks: Unfortunately, it was too far under the rock to see the entire body, but judging from the rattle and its width, it was big.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3873735112; Occurrence Remarks: Cruised it once, accidentally scared it back the way it came. Then returned ~15m later and managed to get it to cross the 2nd time.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3873075101; Occurrence Remarks: No rattle!;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1847598679; Occurrence Remarks: Hanging out around/ under an inactive skidsteer.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3888873169; Occurrence Remarks: Very black in color not grey .;; Coordinate Uncertainty in Meters: 81.00000.

GBIFID: 3902452569; Occurrence Remarks: Horrible pic, snake is bottom right ish in the gap in the flowers.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3903121069; Occurrence Remarks: Was taken a few years back so quality isnΓÇÖt to good, the date here may not be correct but was definitely seen in august of 2014.;; Coordinate Uncertainty in Meters: 9584.00000.

GBIFID: 1880505915; Occurrence Remarks: Dark Morph;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 1880590542; Occurrence Remarks: Icehouse Canyon trail just below the saddle;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3947667614; Occurrence Remarks: First neonate of the year;; Coordinate Uncertainty in Meters: 2940.00000.

GBIFID: 1088951840; Occurrence Remarks: Pair together under sheet of corrugated tin on dry creekbank.;; Coordinate Uncertainty in Meters: 219.00000.

GBIFID: 1088970445; Occurrence Remarks: Rattlensake at Theodore Payne Foundation. - Steve Singer Observation and photo by Steve Singer, sent to nature@nhm.org.;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 1883953092; Occurrence Remarks: A young one being relocated out of campground. One of at least three reported in campground during the weekend.;; Coordinate Uncertainty in Meters: 416.00000.

GBIFID: 1890046259; Occurrence Remarks: Approximately 10 long.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4039554840; Occurrence Remarks: Found dead;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1890088194; Occurrence Remarks: Carcass found at the edge of the lake. Had been messed with.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 4096712477; Occurrence Remarks: Just off the trail, making its way through the brush, so I couldnt get a full body shot.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4102570663; Occurrence Remarks: Four rattlesnakes found on the northern edge of the Santa Clara riverbed. They seemed to have over-wintered for at least some portion of the winter in the riverbed given that we found four, but we thought it was interesting they were in the riverbed. Maybe flushed out of a hibernaculum upstream from the floods?;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 1898823321; Occurrence Remarks: About 2 years old, sorry for the bad pictures.;; Coordinate Uncertainty in Meters: 117.00000.

GBIFID: 4103281608; Occurrence Remarks: Coiled in grass in backyard. Was humanely relocated.;; Coordinate Uncertainty in Meters: 22.00000.

San Bernardino, California: 34.306317, -117.465498: : 4/23/2023: Karol Tabarelli de Fatis: 23 Apr 2023 :
GBIFID: 4111688879; Occurrence Remarks: obs Riccardo Basani;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1901066861; Occurrence Remarks: Snake was tucked under a large downed tree next to the trail. The trail cuts across the top edge of a steep scree slope. It would have been well hidden and gone unnoticed if it didnt rattle as I walked by. Since it announced its presence, I took a few photos in the dim light beneath the log.;; Coordinate Uncertainty in Meters: 10.00000.

San Bernardino, California: 34.340683, -117.240112: : 5/17/2023: Miranda Mikel Buckley: 17 May 2023 :

GBIFID: 1098907955; Occurrence Remarks: Adult, ca. 3.5 ft. long, at side of lower trail to Visitors Center. Sunny, warm morning, ca. 10:50 a.m.;; Coordinate Uncertainty in Meters: 201.00000.

GBIFID: 4121418548; Occurrence Remarks: A lil bb.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1913192533; Occurrence Remarks: Rattle snake;; Coordinate Uncertainty in Meters: 32.00000.

San Bernardino, California: 34.24298, -117.603355: : 6/3/2023: galeaveryharper: 3 Jun 2023 :
GBIFID: 4130121900; Occurrence Remarks: ~3ΓÇÖ long crossing a trail, made a u-turn when it noticed me, once it reached cover, It coiled in defensive position;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4138591032; Occurrence Remarks: Very loud rattle as I passed by on the trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4145327782; Occurrence Remarks: Big guy found crossing the road. Without any tools I had no choice but to wait until it finished crossing before approaching and hope it didnt get run over on this semi-busy road. Thankfully, it made it!;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4145815331; Occurrence Remarks: Lying on the edge of the lake;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4153848042; Occurrence Remarks: curled up on the tread;; Coordinate Uncertainty in Meters: 54.00000.

Ventura, California: 34.21792, -118.906179: : 6/26/2015: NHMLA Community Science Program: 26 Jun 2015 :
GBIFID: 1099969524; Occurrence Remarks: Observation and photo by Jane Fawke.;; Coordinate Uncertainty in Meters: 2043.00000.

GBIFID: 1914365848; Occurrence Remarks: Found it lazy and immobile after eating;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 1920826044; Occurrence Remarks: Images are a bit grainy, it is a baby eating a small mouse, the snake still had a button.;; Coordinate Uncertainty in Meters: 465.00000.

GBIFID: 4165814702; Occurrence Remarks: I went hiking and saw this snake crossing the trail. Looks like a rattlesnake, but I am not sure.;; Coordinate Uncertainty in Meters: 187.00000.

GBIFID: 4400198135; Occurrence Remarks: Poor thing found with missing rattle & 2 wounds;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 4400013591; Occurrence Remarks: Young adult size found dead on road, while we were doing a night driving survey.;; Coordinate Uncertainty in Meters: 226.00000.

GBIFID: 4400248640; Occurrence Remarks: Hiding out from the evening sun;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4405232976; Occurrence Remarks: Has rattle (not seen in pic);; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4413659133; Occurrence Remarks: The lighter of the two snakes was the winner.;; Coordinate Uncertainty in Meters: 192.00000.

GBIFID: 4946526476; Occurrence Remarks: location is not exact;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4414400447; Occurrence Remarks: Adult male DOR;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 4414114295; Occurrence Remarks: One of 6 adults at a rocky den site;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 4416977485; Occurrence Remarks: Sadness :(;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4421142298; Occurrence Remarks: Big fella. About 1.5 meters long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4421179871; Occurrence Remarks: High elevation crotalus;; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.258178, -118.624053: : 9/30/2023: Chloe and Trevor Van Loon: 30 Sep 2023 :

GBIFID: 4424689450; Occurrence Remarks: Adult female and her 3 recently born offspring.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1948766071; Occurrence Remarks: Found in Switzer Falls;; Coordinate Uncertainty in Meters: 9678.00000.

GBIFID: 4431147620; Occurrence Remarks: Wondered if this snake can be IDd. No picture of head. Did not see or hear a rattle. Two pictures submitted.;; Coordinate Uncertainty in Meters: 173.00000.

GBIFID: 1135528681; Occurrence Remarks: We flipped over an over turned trash can and found this little guy.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 1143525065; Occurrence Remarks: Observed crossing Mt. Baldy Road by Charles Hood. Photo uploaded by Greg Pauly.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4936017503; Occurrence Remarks: Rattlesnake;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1143539079; Occurrence Remarks: Baby rattle snake about 1 1/2 ft long sleeping on the (paved) fire road.;; Coordinate Uncertainty in Meters: 136.00000.

GBIFID: 4936311943; Occurrence Remarks: Rattlesnake;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4846804339; Occurrence Remarks: Board line with permitted handlers.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 4852780261; Occurrence Remarks: Found dead, probably run over by a dirtbike.;; Coordinate Uncertainty in Meters: 122.00000.

Los Angeles, California: 34.255071, -118.622309: : 4/16/2024: Lightning Star Sky / Skyler Noah Wall: 16 Apr 2024 :

GBIFID: 2012991164; Occurrence Remarks: Any help on this one would be appreciated. I am thinking Northern Pacific Rattlesnake?;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 4855408081; Occurrence Remarks: Snake was moving fast. Didnt get the whole snake. See second photo.;; Coordinate Uncertainty in Meters: 307.00000.

GBIFID: 4863401904; Occurrence Remarks: Appeared to have a meal in it...;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4863831362; Occurrence Remarks: Big guy.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4868122454; Occurrence Remarks: Seen coiled, partially obscured in shade near a hole under a rock. It moved under the rock as I was changing position, never rattling. The tail had 13 rattle segments.;; Coordinate Uncertainty in Meters: 183.00000.

Los Angeles, California: 34.350332, -118.226694: : 5/26/2024: Alexander Gregory Mason: 26 May 2024 :

GBIFID: 4872527891; Occurrence Remarks: Found two individuals about 6ft away from each other!;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4875385612; Occurrence Remarks: This is likely my favorite helleri Ive seen...nice adult...love the dark coloration..;; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 34.27501, -117.053273: : 5/31/2024: Sara Cristina Medina: 31 May 2024 :
GBIFID: 4875452338; Occurrence Remarks: Young snake, almost didnt see it on trail. Curled up like this, it wouldve fit on the palm of my hand.;; Coordinate Uncertainty in Meters: 1.11000.

San Bernardino, California: 34.273683, -117.116619: : 6/1/2024: Sara Cristina Medina: 1 Jun 2024 :
GBIFID: 4875111150; Occurrence Remarks: Large adult;; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.263153, -116.904858: : 4/9/2026: Angelica Welch: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 2236893986; Occurrence Remarks: Southern Pacific Subspecies;; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.307083, -118.60373: : 6/29/2024: Lightning Star Sky / Skyler Noah Wall: 29 Jun 2024 :

GBIFID: 4908163821; Occurrence Remarks: They called animal control to have it relocated but AC told them they couldnΓÇÖt relocate it because it was a species endemic to Arizona, so AC killed it. AC said she could tell by the hood above its eyes. I would like to know what everyone here thinks. It looks an awful lot like the others IΓÇÖve seen around here. Thanks.;; Coordinate Uncertainty in Meters: 300.00000.

Los Angeles, California: 34.217755, -117.744958: : 7/12/2024: california_every_reptile: 12 Jul 2024 :

San Bernardino, California: 34.351928, -117.168671: : 7/18/2024: Lightning Star Sky / Skyler Noah Wall: 18 Jul 2024 :

GBIFID: 4978434107; Occurrence Remarks: this snake was lying next to the road but definitely not a road kill. The body was perfectly intact, but there appeared to be taken a bite out of its head, where the right eye was, so a quarter of its head was missing. In this wound about 10+ yellow jackets were frantically feeding. Based on the large lump in its body, the snake appeared to have had a substantial meal before its demise. The question is what killed the snake? Maybe a squirrel who tried to defend a young squirrel being eaten by the snake?;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4919197309; Occurrence Remarks: Some damn fool killed it. Spine at head appeared snapped.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 1211989368; Occurrence Remarks: Southern pacific rattlesnake eating a very dead kangaroo rat;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1211997171; Occurrence Remarks: the snake appeared to be dead.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.237495, -118.359977: : 4/28/2019: Artist of Sunshine Ranch: 28 Apr 2019 :
GBIFID: 2238934049; Occurrence Remarks: Juvenile caught and safely relocated.;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 4936329264; Occurrence Remarks: I hung out observing this rattler for over an hour. She was on a very popular trail in a spot where you wouldnt see her until you were practically stepping on her. I didnt want people to get scared and mess with her, so I made some signs and trail markers and talked to folks going by on the path. I passed by again a few hours later and she was still happily on the trail and folks were being kind and giving her space :);; Coordinate Uncertainty in Meters: 226.00000.

GBIFID: 4946476283; Occurrence Remarks: Observed at dusk along the edge of trail;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4946449047; Occurrence Remarks: Two male Southern Pacific Rattlesnakes in combat. This is the first time I have ever encountered it. Photos were taken while I was at work using my iPhone 12 Pro so the photos are not in the best of quality.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2239009567; Occurrence Remarks: Observation and photo by Robert Rocha;; Coordinate Uncertainty in Meters: 977.00000.

GBIFID: 4950525947; Occurrence Remarks: Baby rattlesnake???;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 2242820438; Occurrence Remarks: Juvenile. Afternoon. High 70s F.;; Coordinate Uncertainty in Meters: 3391.00000.

GBIFID: 2242820556; Occurrence Remarks: Observation of a different juvenile. Temp 70s.;; Coordinate Uncertainty in Meters: 1353.00000.

GBIFID: 4953211336; Occurrence Remarks: Absolutely tiny! Too sleepy to rattle at me. Maybe the size of my palm, curled up.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2242934735; Occurrence Remarks: Just a baby. I am not sure of the age, but it was fast. How do you tell how old this snake is?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4976543442; Occurrence Remarks: Young one, approx. 7ΓÇ¥ long;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1229614390; Occurrence Remarks: Observation and photo by Harlynne Geisler, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.264655, -118.150619: : 4/18/2026: roerica7: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 5108438430; Occurrence Remarks: Found in the grass next to a coverboard. Observed on a survey with the Southwestern Herpetological Society at the Santa Susana Field Laboratory. Private property accessed with permission.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5108379356; Occurrence Remarks: Male (left) and female (right) found under a coverboard. Both were very warm and moved erratically. Eventually, they both moved to the nearby bushes and coiled up. Observed on a survey with the Southwestern Herpetological Society at the Santa Susana Field Laboratory. Private property accessed with permission.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5108503555; Occurrence Remarks: Sub adult;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 2273254495; Occurrence Remarks: Found dead on trail with rock on its head.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5154084815; Occurrence Remarks: Big dark beautiful rattlesnake;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.299774, -118.139132: : 4/19/2025: california_every_reptile: 19 Apr 2025 :

Los Angeles, California: 34.239078, -118.087019: : 4/19/2025: california_every_reptile: 19 Apr 2025 :

Los Angeles, California: 34.30863, -118.513078: : 5/8/2025: Shadow Hills Nature Journal Club (Terri Mando): 8 May 2025 :

GBIFID: 2283093913; Occurrence Remarks: Saw this young southern pacific rattlesnake at the top of the Mormon Rocks Interpretive Trail. Though it was shaking its tail fiercely, the sound was very weak -- probably because its rattle is so small. It was perhaps two feet long, and maybe an inch to an inch and a half wide.;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 5154843600; Occurrence Remarks: Fresh roadkill. Collected for genetic material.;; Coordinate Uncertainty in Meters: 30.00000.

Ventura, California: 34.269447, -118.781482: : 5/29/2019: NHMLA Community Science Program: 29 May 2019 :
GBIFID: 2283125474; Occurrence Remarks: Observation and photo taken by mallu.runner, via Instagram #natureinla;; Coordinate Uncertainty in Meters: 11829.00000.

GBIFID: 2283131392; Occurrence Remarks: Pacific Rattlesnake, Mt. Lowe road;; Coordinate Uncertainty in Meters: 975.00000.

Los Angeles, California: 34.246045, -118.18581: : 5/9/2025: california_every_reptile: 9 May 2025 :

GBIFID: 5177041496; Occurrence Remarks: Saw this little gal heading up Bonita falls. Not sure what rattlesnake species she specifically is. Anyone know ?;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1265553420; Occurrence Remarks: An adult helleri that was found underneath a board, in a grassy field near a creek bed, on a very warm (nearly 80 degree F) and sunny morning.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5217323417; Occurrence Remarks: Dexter Park Really not sure what happened here. This snake was on a white sandbag--about 1 foot square--so its a juvenile snake. I dont know if it was already preyed upon or came out to warm up and something else happened. Poor snake;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 2311351819; Occurrence Remarks: 3.5 - 4 ft long. LAying across the road in the shade as I came around a corner.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 5237882857; Occurrence Remarks: Beautiful, large adult.;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 5237755192; Occurrence Remarks: Beauty, found right on the trail. WouldnΓÇÖt have noticed it without that signature rattle.;; Coordinate Uncertainty in Meters: 286.00000.

GBIFID: 2294692090; Occurrence Remarks: Observation & photo by Ray Kirk, sent to nature@nhm.org;; Coordinate Uncertainty in Meters: 405.00000.

GBIFID: 2422981405; Occurrence Remarks: Very dangerous! Venomous!;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 1272099259; Occurrence Remarks: This rattlesnake crawled into the base of a Whipples yucca. It was hard to get a good photo once the snake was tucked into the yucca but the pattern and rattle are visible in the photos.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2850978466; Occurrence Remarks: Eating his dinner. He was disturbed by a Yellow Jacket, wanting a share. The Yellow Jacket stung the snake, possibly in his eye!;; Coordinate Uncertainty in Meters: 15.00000.

Los Angeles, California: 34.217567, -118.144909: : 10/9/2019: Heather Dawnstar Sabin: 9 Oct 2019 :
GBIFID: 2429602293; Occurrence Remarks: This ~2 rattlesnake was between the trail and the creek very near the start of the Millard Falls trail. It didnt seem bothered by our large group at all, except that it seemed to decide that perhaps it should take its food elsewhere to eat, so it picked up a dead mouse from under the leaves, and started to move. It was only then that it rattled at us, I am guessing because we were blocking its path, so we left.;; Coordinate Uncertainty in Meters: 37.00000.

GBIFID: 2451711108; Occurrence Remarks: Western Rattle Snake going across the trail LEAVE THE SNAKE ALONE. Respect it and go around it.;; Coordinate Uncertainty in Meters: 14924.00000.

San Bernardino, California: 34.217714, -116.963509: : 8/4/2015: Michael Woodruff: 4 Aug 2015 :

GBIFID: 2465359820; Occurrence Remarks: This is a rattle snack we found in Millard canyon who was eating a rattle snake when we found him.;; Coordinate Uncertainty in Meters: 466.00000.

GBIFID: 2540757705; Occurrence Remarks: Large adult on trail just SE. of Center.;; Coordinate Uncertainty in Meters: 203.00000.

GBIFID: 2574116173; Occurrence Remarks: It seems safer when they are stretched out and moving vertically.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1305168619; Occurrence Remarks: Out in the open, curled up next to the trail (no body there). Warm overcast day.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4935828289; Occurrence Remarks: Briar Bluff;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2597879081; Occurrence Remarks: I was hiking down the trail when I spooked this guy. I do not know how it was positioned before I disturbed it because I did not see it until it started rattling (I reflexively jumped back when I saw how close it was). Was likely either crossing the trail or basking at the opening of a hole. It never stuck, but it did slither off into the nearby sage scrub while rattling and keeping its head faced towards me. Air temperature was likely somewhere in the high 70s or 80s. The weather has been mostly sunny and warm recently, broken up with a few partially cloudy days.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1323011051; Occurrence Remarks: Was excited until I saw it was dead. Looks like it ate the wrong thing. Kinda how I feel when I eat my wifes cooking.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2609151796; Occurrence Remarks: The circumstances of this trip are described in more detail in: Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 2609320108; Occurrence Remarks: Two males in combat;; Coordinate Uncertainty in Meters: 171.00000.

GBIFID: 2634372845; Occurrence Remarks: Saw heading south on the PCT towards Mt Baden Powell. Drinking melted snow water. Was right on the path, but very relaxed. Didnt hear any rattle. Looked to be 3.5ft long;; Coordinate Uncertainty in Meters: 703.00000.

GBIFID: 2802838605; Occurrence Remarks: Rosco?;; Coordinate Uncertainty in Meters: 24.00000.

San Bernardino, California: 34.264656, -116.90409: : 8/6/2016: bighornsheepgirl: 6 Aug 2016 :
GBIFID: 2814035507; Occurrence Remarks: My supervisor, who is trained in handling snakes, moved the snake behind the visitor center because it was too close to high-trafficked people areas. I took a picture and zoomed in. Observed on August 6th, 2016.;; Coordinate Uncertainty in Meters: 29.00000.

San Bernardino, California: 34.305082, -116.850231: : 8/7/2016: bighornsheepgirl: 7 Aug 2016 :
GBIFID: 2814035856; Occurrence Remarks: Holcomb Valley Rd. near the Pygmy Cabin ruins. 8/7/2016;; Coordinate Uncertainty in Meters: 223.00000.

GBIFID: 2826373155; Occurrence Remarks: An absolute beauty and about 3 - 4 feet. Not sure if this is Western (as suggested) or Southern Pacific (please update with correct species). What a privilege to be able to see it!;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1457635787; Occurrence Remarks: Found dead in the street. I assume it was hit by a car.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 2850772011; Occurrence Remarks: Beautiful 3 1/2 - 4 foot Southern Pacific getting some warmth this morning before the sun and extreme heat. Very docile and relaxed, it let me take as many pics as I wanted. AWESOME!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 899949663; Occurrence Remarks: Neonate. Note the button only.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 2862375915; Occurrence Remarks: Southern Pacific rattlesnake, Angeles crest highway;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2901737368; Occurrence Remarks: Cogswell Dam Rd. Spotted while cycling.;; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.325557, -117.838117: : 6/4/2017: NHMLA Community Science Program: 4 Jun 2017 :
GBIFID: 1571136137; Occurrence Remarks: Observation and photo by whatwouldmuirdo, sent via Instagram #rascalsblitz this was snapped along the windy Gap trailhead near Crystal Lake campground on June 4th 2017 around noon -whatwouldmuirdo;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 1571158935; Occurrence Remarks: Crotalus helleri 05 May 2017 CA, SBE Co., Crowder Canyon;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571187984; Occurrence Remarks: A very small one. I disturbed its sunning, it went under a rubus leaf and coiled but did not rattle.;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 3031692368; Occurrence Remarks: Two males fighting over a nearby female (who I didnt see). Brief video at: https://youtu.be/LE_SkK_c3io.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1572369876; Occurrence Remarks: San Bernardino County, California, US Cal Ode Blitz 2017;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911499891; Occurrence Remarks: Found on side of road hit by a car;; Coordinate Uncertainty in Meters: 49.00000.

GBIFID: 911500292; Occurrence Remarks: Found in Ventura County on border of Santa Monica Mountains Conservancy;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1584431891; Occurrence Remarks: Phylum Chrodata-Subphylum vertebrata-class reptilia;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 3079719212; Occurrence Remarks: Hoping it is a juvenile racer, buuuutttt am worries it is a southern pacific rattler. Thoughts?;; Coordinate Uncertainty in Meters: 715.00000.

GBIFID: 1586107707; Occurrence Remarks: DOR. Sent to me by family. Said that it wasnt flat, likely not roadkill but possibly a roadrunner. Has seen roadrunners attacking rattlesnakes in the past.;; Coordinate Uncertainty in Meters: 57.00000.

GBIFID: 3079817113; Occurrence Remarks: Rattlesnake? Some kind of viper right?;; Coordinate Uncertainty in Meters: 58.00000.

GBIFID: 923915499; Occurrence Remarks: Subadult, in rocks at edge of trail around north side of Mt. Lowe.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1586141942; Occurrence Remarks: Atop South Mt Hawkins at the base if a Jeffrey Pine.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1668838459; Occurrence Remarks: The creature was very curled, flicked its tongue, and remained very calm. The scale patterns were dark, with alternating brown and dark brown blotches. The rattle at the end defined this to be a rattler.It sheltered in the leaf litter during the summer afternoon, inside the Riparian Forest.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3124861008; Occurrence Remarks: Saw it while hiking, at 2:31pm. It was under a sugar bush, off the side of the trail, higher elevation on the trail. Breezy day, not sure the exact temperature but I think it was in the low 80ΓÇÖs. Last time I saw a southern pacific rattlesnake was last June so neat to see one! Looked about 3 feet long.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3124930925; Occurrence Remarks: It was already curled up when we saw it and beneath an interpretive sign at 1:43pm. When we walked back about 30 minutes later, it was still there in the same position. Kinda had a lump in its stomach, maybe it had ate recently. It was so still! It did not move one bit. Hard to tell from the photo but it was a little guy. When we parked around 12:30pm it was in the mid - high 70ΓÇÖs.;; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.231944, -116.96: : 5/29/2021: Julius Simonelli: 29 May 2021 :

GBIFID: 1668854328; Occurrence Remarks: Found this snake days after the Blue Cut fire. It was surrounded by burned vegetation. Tried to give it water, but it moved on.;; Coordinate Uncertainty in Meters: 767.00000.

GBIFID: 1024200643; Occurrence Remarks: This rattlesnake was on the Switzer Trail, a couple of hundred yards before the falls, in the Angeles Forest on April 14, 2014. He was close to the stream and would likely have taken a drink, but our presence changed his course and he took cover. We waited patiently, but he would not emerge for a photo of his head. - Clare MK Observation and photos by Clare MK.;; Coordinate Uncertainty in Meters: 12800.00000.

Los Angeles, California: 34.265735, -118.145009: : 5/30/2021: sabrinebouzirimhiririvera: 30 May 2021 :

GBIFID: 3302315557; Occurrence Remarks: We found this poor little guy run over on the road. We gently pushed it to the side. RIP. There have been a lot of sightings recently in our neighborhood. I think that rattlesnakes are very beautiful. They move like no other snake. They are the Rolls Royce of snakes.;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 3302328622; Occurrence Remarks: Just a test picture as IΓÇÖm a new user. A rattler I saw on my 2019 Pacific Crest Trail thru-hike. Picture was taken just after the Mojave river dam in southern Cal. An outstanding feature of this animal was its dark/black color.;; Coordinate Uncertainty in Meters: 289.00000.

GBIFID: 3302496008; Occurrence Remarks: Juvenile nestled in a rock depression, blending in with the pine bark and twigs. Coiled diameter about 10-12 cm.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3307535603; Occurrence Remarks: Southern Pacific rattlesnake, Crystal Lake;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3307200134; Occurrence Remarks: not sure on id;; Coordinate Uncertainty in Meters: 675.00000.

GBIFID: 3314425849; Occurrence Remarks: At the base of Millard Falls, the misty and fern-loaded rock face was occupied by this small snake. This young rattlesnake was still, the rattle itself was small, and the skin appeared to be shedding off the body. Numerous hikers came across this individual in the Riparian Forest canyon, thankfully all were keeping a good distance and respectfully observing this fascinating creature.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3314310284; Occurrence Remarks: Visual encounter with Jerry Dion Morrill;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3321199614; Occurrence Remarks: By the stream near the campground;; Coordinate Uncertainty in Meters: 206.00000.

GBIFID: 3330781076; Occurrence Remarks: This poor guy was alive and didnt have any visible injuries when I found it, but given its behavior it had definitely been hit. Very large adult. Unfortunately unsurprising with the large amount of traffic on the road tonight.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1703171578; Occurrence Remarks: Observation and photo by huckandmiguel, sent via instagram Picture taken at the very end of the Millard Canyon Falls trail in Altadena... just 10 feet or so from the pool at the bottom of the falls. Children and dogs were running wild... but the snake didnt bother anyone.;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 3338051575; Occurrence Remarks: was heading down the trail. I couldnt pass it until it finally went off the trail. followed it for 10 minutes waiting to pass!;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1802660231; Occurrence Remarks: Rolled off the road before I could photo;; Coordinate Uncertainty in Meters: 5101.00000.

GBIFID: 3355263189; Occurrence Remarks: Being mobbed by a mixed flock of juncos, chickadees and nuthatches;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3385065472; Occurrence Remarks: Found dead in backyard. Looked half eaten. Probably dropped by a raptor.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3408221731; Occurrence Remarks: Probably newborn very smol;; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.294209, -119.198111: : 6/28/2026: Phyllis McGrath: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 105.00000.

Los Angeles, California: 34.219955, -118.13543: : 7/4/2026: Hanmei Tang: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.29977, -118.830936: : 3/26/2026: Sean Wilcox: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Los Angeles, California: 34.335648, -118.019296: : 8/25/2025: William Mason: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.237797, -118.35878: : 8/19/2025: keekihanu: 19 Aug 2025 ; Coordinate Uncertainty in Meters: 32.00000.

Los Angeles, California: 34.218583, -118.144767: : 8/26/2025: DirtyPopcorn: 26 Aug 2025 ; Coordinate Uncertainty in Meters: 34.00000.

Los Angeles, California: 34.23887, -117.764137: : 6/20/2026: vagab0nd: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Ventura, California: 34.292147, -119.266783: : 7/12/2026: falconpatrol: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.288113, -119.261575: : 7/12/2026: falconpatrol: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.28308, -119.259833: : 7/12/2026: falconpatrol: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.292561, -116.820961: : 7/12/2026: Alison Kreager: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.256513, -118.152847: : 7/16/2026: wildlife_lover: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 62.00000.

San Bernardino, California: 34.304837, -116.87742: : 7/16/2026: Ben Hejna: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Weirdest snake encounter IΓÇÖve ever had; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.287417, -116.972111: : 7/19/2026: Rosalind Helfand: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.258772, -118.193788: : 7/20/2026: Tom Mills: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.237633, -118.359772: : 9/27/2025: Cody: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 28.00000.

Los Angeles, California: 34.443797, -118.360145: : 5/8/2022: Lightning Star Sky / Skyler Noah Wall: 8 May 2022 :

Occurrence Remarks: Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.391545, -118.683167: : 8/6/2025: Joseph Decruyenaere: 6 Aug 2025 :
Occurrence Remarks: Occurrence Remarks: Zoom in, itΓÇÖs there, but dark burrows are hard to photograph on sunny days. Especially when they have venomous snakes in them.; Coordinate Uncertainty in Meters: 14.00000.

Ventura, California: 34.465862, -119.177553: : 3/17/2026: abbyromo: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Los Angeles, California: 34.450817, -117.919678: : 3/24/2026: mojavemama: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.374655, -118.048475: : 8/11/2025: california_every_reptile: 11 Aug 2025 :

Los Angeles, California: 34.538516, -118.085019: : 10/22/2025: Bee Rawles: 22 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.441463, -117.835337: : 8/24/2025: garthfauce: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.51925, -119.346171: : 7/24/2026: rayfilet: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.686517, -118.540162: : 10/2/2025: Matthew Feany: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Coordinate Uncertainty in Meters: 28818.00000.

Occurrence Remarks: missing its head and rattle; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.36003, -118.397705: : 3/22/2026: Alana Pizarro: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.426533, -118.600113: : 9/15/2025: dianac97: 15 Sep 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Santa Barbara, California: 34.458625, -119.69188: : 9/20/2025: liucommajames: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4153572220; Occurrence Remarks: A baby one!;; Coordinate Uncertainty in Meters: 677.00000.

Los Angeles, California: 34.468794, -118.499198: : 4/29/2026: dikdik: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 4076334881; Occurrence Remarks: Alive but unmoving in the middle of the trail. Fairly small and slender so I assume it to be a juvenile.;; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 1092903295; Occurrence Remarks: Neonate;; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.508821, -118.130872: : 3/30/2026: Jack Wickel: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 161.00000.

Santa Barbara, California: 34.472062, -119.715422: : 4/17/2026: sbuzzbee: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.560097, -119.16343: : 5/31/2026: ashert: 31 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.570367, -119.949958: : 5/23/2026: Camille Workman: 23 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Barbara, California: 34.466294, -119.71119: : 5/9/2026: resonantdonkey: 9 May 2026 ; Coordinate Uncertainty in Meters: 724.00000.

Ventura, California: 34.465613, -119.055375: : 3/21/2026: danpham20: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Barbara, California: 34.416656, -119.512835: : 4/15/2026: Eric Cleveland: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Santa Barbara, California: 34.486547, -119.637289: : 4/17/2026: Kaj Hoffman: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: roadkill, but looks like someone cut the rattle; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Young, about 15, alive in road; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.69305, -120.040205: : 4/11/2026: zimmstella: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.445333, -118.586392: : 4/21/2026: salixbio: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.461017, -119.182419: : 3/24/2026: ahthorne: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.444374, -118.225418: : 11/12/2025: onekindofmilk: 12 Nov 2025 ; Coordinate Uncertainty in Meters: 82.00000.

Ventura, California: 34.643557, -119.258278: : 4/3/2026: Ryker Haggmark: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Barbara, California: 34.475731, -119.684533: : 5/19/2026: Kaj Hoffman: 19 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.477573, -118.343399: : 5/22/2026: redudumdumstile: 22 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Santa Barbara, California: 34.690666, -120.040238: : 5/23/2026: Douglas J. Long: 23 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.531221, -117.66202: : 5/23/2026: drbrachydactyl: 23 May 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.492253, -119.3163: : 5/25/2026: Chris Henry: 25 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.472291, -119.225644: : 5/16/2026: Aaron Echols: 16 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.361821, -118.495232: : 5/21/2026: potted_plant: 21 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.492507, -118.02634: : 5/30/2026: Jakob Ingle: 30 May 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Los Angeles, California: 34.68887, -118.618913: : 5/1/2026: california_every_reptile: 1 May 2026 ; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 1847474980; Occurrence Remarks: Neonate;; Coordinate Uncertainty in Meters: 389.00000.

Los Angeles, California: 34.475195, -118.364433: : 7/27/2022: Lightning Star Sky / Skyler Noah Wall: 27 Jul 2022 :

Los Angeles, California: 34.446487, -118.388642: : 11/2/2022: Lightning Star Sky / Skyler Noah Wall: 2 Nov 2022 :
GBIFID: 3963660102; Occurrence Remarks: Illuminated by short wave UV Light 365nm;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3759988893; Occurrence Remarks: Baby found in thick brush at San Marcos foothills.;; Coordinate Uncertainty in Meters: 115.00000.

Los Angeles, California: 34.37549, -118.52876: : 4/5/2025: Sam S: 5 Apr 2025 ; Coordinate Uncertainty in Meters: 58.00000.

Santa Barbara, California: 34.693041, -120.043984: : 2/8/2026: Douglas J. Long: 8 Feb 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Ventura, California: 34.430076, -119.089075: : 2/24/2026: Greg Froelich: 24 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.392102, -118.23608: : 2/8/2026: california_every_reptile: 8 Feb 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Occurrence Remarks: Two snakes under one metal silo! (private property); Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.472295, -120.116361: : 2/28/2026: Dr. Torg Bilger: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 1172.00000.

Ventura, California: 34.513344, -118.761175: : 2/28/2026: Abe Achkinazi: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 238.00000.

Los Angeles, California: 34.485827, -118.314487: : 3/14/2026: Ella Ann: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 117.00000.

Los Angeles, California: 34.48434, -118.309326: : 3/15/2026: Yvette Perez: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 192.00000.

Ventura, California: 34.472092, -119.252353: : 3/16/2026: Bill Forwood: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Ventura, California: 34.669774, -119.094693: : 3/21/2026: Cole Ivie: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28790.00000.

Santa Barbara, California: 34.471142, -120.020794: : 10/11/2025: Brooke Benjamin: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.402572, -118.56924: : 11/5/2025: Noel C. Pagador: 5 Nov 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.486722, -118.315292: : 3/20/2026: Molly H: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.485542, -118.315637: : 3/20/2026: Molly H: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.361412, -117.901929: : 7/20/2025: Jiovanny Celis: 20 Jul 2025 ; Coordinate Uncertainty in Meters: 81.00000.

Occurrence Remarks: Found 1 individual coiled in dry grass on a hillside overlooking orchards and the valley floor. It has dark brown diamond patterns that blend into the shadows of the dead grass. It stayed perfectly still. Photo taken from a safe distance. Weather: 68┬░F, Clear.; Coordinate Uncertainty in Meters: 1756.00000.

Los Angeles, California: 34.43063, -117.874512: : 4/21/2026: Olivia Miseroy: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.457447, -117.928572: : 4/20/2026: Olivia Miseroy: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Santa Barbara, California: 34.420079, -119.664128: : 4/30/2026: chrismunoz: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Los Angeles, California: 34.683087, -118.57505: : 4/28/2026: Matt Brady: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.386819, -117.127277: : 4/20/2026: Rachel Woodard: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.367037, -118.523413: : 5/9/2026: Josh: 9 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Los Angeles, California: 34.63435, -118.753732: : 5/10/2026: Eduardo: 10 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Barbara, California: 34.687006, -120.429262: : 5/10/2026: bobdahm: 10 May 2026 ; Coordinate Uncertainty in Meters: 45971.00000.

Santa Barbara, California: 34.686475, -120.060014: : 3/26/2026: seadana: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.544137, -118.685066: : 2/3/2026: california_every_reptile: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.493388, -118.758515: : 2/3/2026: california_every_reptile: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.515062, -118.639175: : 2/3/2026: california_every_reptile: 3 Feb 2026 ; Coordinate Uncertainty in Meters: 101.00000.

Los Angeles, California: 34.367805, -117.989105: : 5/2/2026: Raphael D Mazor: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.579499, -118.672343: : 3/21/2026: Archer Barrett: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 62.00000.

Occurrence Remarks: Freshly hit, maybe 2-3 minutes before we got to it; Coordinate Uncertainty in Meters: 18.00000.

Los Angeles, California: 34.375542, -118.526017: : 3/28/2026: Josh: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Barbara, California: 34.686089, -120.050956: : 4/21/2025: Scott Mauffet-Smith: 21 Apr 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.451363, -117.855601: : 9/27/2025: Ruth Gravance: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 194.00000.

Santa Barbara, California: 34.54658, -120.554055: : 5/13/2026: Jordan Castinado: 13 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Ventura, California: 34.444408, -119.134994: : 5/13/2026: terrilburgess: 13 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Ventura, California: 34.416503, -118.698595: : 5/13/2026: Nicolas Vinas: 13 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.422988, -117.868042: : 5/17/2026: mojavemama: 17 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.387719, -118.117126: : 5/17/2026: Angelo Caseres: 17 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Ventura, California: 34.409502, -118.771472: : 3/21/2026: herphendrie: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.533709, -118.758102: : 3/21/2026: herphendrie: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.360072, -118.397758: : 3/22/2026: betweeneverytwopines: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.604708, -118.659013: : 3/14/2026: molafish: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.481463, -117.512453: : 3/23/2026: Sofia Diaz: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Bernardino, California: 34.43335, -117.65148: : 3/14/2026: Sofia Diaz: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Ventura, California: 34.423555, -119.297642: : 3/9/2026: tytostrix: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 18.00000.

Santa Barbara, California: 34.692966, -120.041803: : 3/27/2026: Douglas J. Long: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 27.00000.

Los Angeles, California: 34.456603, -118.089683: : 3/27/2026: Graham Montgomery: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.565872, -119.263437: : 3/27/2026: Kelly Krechmer: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Los Angeles, California: 34.635589, -118.77112: : 3/29/2026: gfj6: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 1194.00000.

Santa Barbara, California: 34.482063, -119.681358: : 3/12/2026: davemont: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.428483, -118.530381: : 3/30/2026: vesevius: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Ventura, California: 34.547627, -119.040299: : 3/30/2026: lunarmyco: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

San Bernardino, California: 34.410557, -117.625377: : 4/3/2026: tictactimmy: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 88.00000.

Los Angeles, California: 34.682011, -118.391658: : 4/5/2026: rnpreptiles: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: 2026-03-21 ; Southern Pacific Rattlesnake -; big LIVE, on roads W bd edge, under big oak at rock outcrop, Sweeney Road, Lompoc, SBA Co, CA ; 34.634154, -120.385792 =; Coordinate Uncertainty in Meters: 100.00000.

Occurrence Remarks: 2026-04-08 ; Southern Pacific Rattlesnake -; dor baby, flatskin 2-3 days, ~~22 cm, N bd lane, San Miguelito Canyon Rd, Lompoc, SBA Co, CA ; 34.575526, -120.502154 = collected; Coordinate Uncertainty in Meters: 20.00000.

Santa Barbara, California: 34.422992, -120.469676: : 10/25/2024: Jordan Castinado: 25 Oct 2024 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.579773, -118.644426: : 11/23/2025: california_every_reptile: 23 Nov 2025 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.495771, -118.775121: : 11/23/2025: california_every_reptile: 23 Nov 2025 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.599768, -117.738461: : 7/27/2026: Ingrid Hernandezgoll: 27 Jul 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

San Bernardino, California: 34.367397, -117.294587: : 6/1/2026: Cneoridium: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.365546, -116.899945: : 6/6/2026: Nicholas Procopio: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.534304, -117.223499: : 6/6/2026: Randy Millwee: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Ventura, California: 34.578157, -119.328814: : 6/7/2026: Matt Brady: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.509725, -119.392883: : 6/7/2026: Genevieve G. Mount: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.611128, -118.764947: : 6/25/2026: Adam J. Searcy: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Los Angeles, California: 34.458058, -117.665589: : 6/9/2026: drbrachydactyl: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

San Bernardino, California: 34.423378, -117.604242: : 6/13/2026: drbrachydactyl: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Occurrence Remarks: Massive, absolute tragedy.; Coordinate Uncertainty in Meters: 28846.00000.

Ventura, California: 34.640061, -119.311454: : 6/16/2026: alysestuck: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 2600.00000.

Los Angeles, California: 34.38401, -118.070853: : 6/16/2026: Tom Mills: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.662836, -118.795788: : 6/20/2026: Cole Ivie: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 28790.00000.

Los Angeles, California: 34.375378, -118.5261: : 6/20/2026: Heiny Guti├⌐rrez: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Ventura, California: 34.408522, -119.351555: : 6/22/2026: Sebastian Fayer: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 324.00000.

Los Angeles, California: 34.414021, -117.858386: : 7/12/2026: Ingrid Hernandezgoll: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 27.00000.

Los Angeles, California: 34.470584, -117.679918: : 6/23/2026: Ingrid Hernandezgoll: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.583293, -117.837623: : 6/24/2026: Tom Mills: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Ventura, California: 34.684922, -118.844925: : 7/15/2026: Andrew: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.3893, -118.289701: : 7/4/2026: california_every_reptile: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.376071, -117.819369: : 6/16/2026: california_every_reptile: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Los Angeles, California: 34.360831, -117.862684: : 6/16/2026: california_every_reptile: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.408897, -117.629408: : 6/30/2026: Wendy Walker: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Los Angeles, California: 34.460336, -118.375815: : 3/29/2026: Kat Halsey: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 1848.00000.

Ventura, California: 34.636422, -119.311142: : 6/30/2026: Max Breshears: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 222.00000.

Occurrence Remarks: Western diamond back with dark coloration; Coordinate Uncertainty in Meters: 27.00000.

Santa Barbara, California: 34.688745, -119.911901: : 4/24/2026: Garrett Craig: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Barbara, California: 34.515881, -119.692105: : 11/3/2025: mcastellino: 3 Nov 2025 ; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3705700479; Occurrence Remarks: Sound extract from movie taken at this observation https://www.inaturalist.org/observations/74554751;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3759554859; Occurrence Remarks: Large rattlesnake on Pothole Trail in the Los Padres Mountains. Partly cloudy day in the 60ΓÇÖs F. It was not happy to see me and rattled for a long time before leaving into the bushes.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3759802608; Occurrence Remarks: Dropped by a golden eagle that I accidentally surprised while feeding.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3772901646; Occurrence Remarks: Pictures by Camila Shannon;; Coordinate Uncertainty in Meters: 225.00000.

Santa Barbara, California: 34.486445, -119.716845: : 4/30/2022: saturdaypancakesbythesea: 30 Apr 2022 :

GBIFID: 3773475988; Occurrence Remarks: Chill guy at the beach;; Coordinate Uncertainty in Meters: 559.00000.

GBIFID: 3773538149; Occurrence Remarks: Basking in the road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3784808591; Occurrence Remarks: Small juvenile;; Coordinate Uncertainty in Meters: 277.00000.

Santa Barbara, California: 34.5334, -119.6276: : 5/15/2022: George Williams: 15 May 2022 :

GBIFID: 3802723033; Occurrence Remarks: Very angry, considering we likely saved it from an untimely death as roadkill;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 1841268849; Occurrence Remarks: Rattles snake on side of path above the stream air in warm dry;; Coordinate Uncertainty in Meters: 500000.00000.

Los Angeles, California: 34.475253, -118.34838: : 6/12/2022: Lightning Star Sky / Skyler Noah Wall: 12 Jun 2022 :

GBIFID: 1847466580; Occurrence Remarks: Neonate;; Coordinate Uncertainty in Meters: 285.00000.

GBIFID: 3873654214; Occurrence Remarks: Same individual I had seen 5 days prior.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1847552860; Occurrence Remarks: Neonate.;; Coordinate Uncertainty in Meters: 292.00000.

GBIFID: 3874189675; Occurrence Remarks: Pretty sopac out exploring looking for prey presumably.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1088914841; Occurrence Remarks: This young Southern Pacific rattler was underneath the door frame of our dog run in a depression in the runs sandy substrate. We live on 5 acres in Agua Dulce CA. at about 3,000 feet above sea level very close to Vasquez rocks. Time was about 7am on Saturday February 28th. It was cold- approx. 50 degrees. Didnt rattle (dont think it has any), immediately struck at my husband but seemed sluggish from the cold. - Kristen Perez Observation and photos by Kristen Perez, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3888781035; Occurrence Remarks: Two in two days!;; Coordinate Uncertainty in Meters: 211.00000.

GBIFID: 3902609457; Occurrence Remarks: Some Ass hole killed the poor young snake. Totally asinine.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3903220461; Occurrence Remarks: I think it was ran over- I moved it off to the side of the street;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 1088925992; Occurrence Remarks: Female. Sure looked gravid. Really late or just constipated?;; Coordinate Uncertainty in Meters: 28818.00000.

Santa Barbara, California: 34.52672, -119.94789: : 9/9/2022: George Williams: 9 Sep 2022 :

GBIFID: 3923616776; Occurrence Remarks: Just chillin by the hot spring pools like, what gives?;; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.446492, -118.388647: : 11/2/2022: Lightning Star Sky / Skyler Noah Wall: 2 Nov 2022 :

GBIFID: 4022192880; Occurrence Remarks: About 4ΓÇÖ long and super thick, sunning himself across the trail, looks like he just had a meal, possibly a ground, squirrel or small rabbit;; Coordinate Uncertainty in Meters: 46.00000.

GBIFID: 4067569495; Occurrence Remarks: One only a foot and a half away rattled at me then I stumbled back and saw this one farther away. Of course the ONE day I decide not to wear my snake chaps!!;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4111623056; Occurrence Remarks: Vasquez Rocks Natural Area;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1901084003; Occurrence Remarks: Found wrapped in each others arms.;; Coordinate Uncertainty in Meters: 395.00000.

GBIFID: 4133904566; Occurrence Remarks: Southern Pacific Rattlesnake, Texas Canyon;; Coordinate Uncertainty in Meters: 180.00000.

GBIFID: 1913707192; Occurrence Remarks: Dead snake. We think it was ran over. Found on a dirt road in the middle of several small wineries. Possible juvenile rattle snake.;; Coordinate Uncertainty in Meters: 195.00000.

Ventura, California: 34.445309, -119.068128: : 3/30/2026: lunarmyco: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 4138131099; Occurrence Remarks: Looked like someone went out of their way to run over this snake.;; Coordinate Uncertainty in Meters: 68.00000.

GBIFID: 4145652654; Occurrence Remarks: Feeding on a California Ground Squirrel.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4165643069; Occurrence Remarks: Snake stole our campsite!;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 4171764882; Occurrence Remarks: This is a screenshot since Id only taken a video. She was rattling!;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1134966866; Occurrence Remarks: Very aggressive male. Multiple calls today, all aggressive males, one caught while mating.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1134966763; Occurrence Remarks: Very pretty male, caught while mating.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1134966862; Occurrence Remarks: Very wide. Possibly gravid female. Exactly 3 ft in length. Found DOR @ 10:40 PM. 7/31/15 Air temp is 75 F.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4420881409; Occurrence Remarks: Didnt rattle when I started walking near it, but once I walked away, I heard it rattle as it uncoiled and slid in the opposite direction of me.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 4430617042; Occurrence Remarks: Found in the contact zone for Mojave Rattlesnakes (C s scutulatus) and Southern Pacific Rattlesnakes (C o helleri). Despite coloration and pattern, scales and tail would suggest it is pure oreganus ssp.;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 4500540930; Occurrence Remarks: Possible juvenile. Not too specific about the species. Based off the opinion of local from that area;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 4500610131; Occurrence Remarks: was basking outside a large concrete junk pile;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4500815075; Occurrence Remarks: Same individual as seen the day before (https://www.inaturalist.org/observations/194237612). was basking outside a large concrete junk pile;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4510396184; Occurrence Remarks: Specimen was a juvenile about 5-6 dm long;; Coordinate Uncertainty in Meters: 285.00000.

GBIFID: 4607528655; Occurrence Remarks: Jameson Lake;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4851936902; Occurrence Remarks: For the racer see: https://www.inaturalist.org/observations/208006447;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4851972992; Occurrence Remarks: Southern Pacific rattlesnake, Fish canyon (Castaic);; Coordinate Uncertainty in Meters: 93.00000.

GBIFID: 4851734229; Occurrence Remarks: Now theres something you dont see everyday...;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 4853048280; Occurrence Remarks: Found this poor guy on Lake Hughes Road. Had been hit a few times and was already quite dead. It was quite chilly that day; the poor cold-blooded creature probably had little chance to cross the highway in time. I moved him out of the road, so a scavenger could safely eat this fine meal later.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936483754; Occurrence Remarks: Sorry, miss-clicked Northern Pacific ≡ƒÖä Obv, this is southern. Thank you all for spotting the correction ≡ƒæì≡ƒÅ╗;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4854797062; Occurrence Remarks: Replacing another observation;; Coordinate Uncertainty in Meters: 678.00000.

Santa Barbara, California: 34.459, -120.02513: : 5/5/2024: jasminesalik: 5 May 2024 :

GBIFID: 4863555333; Occurrence Remarks: had apparently been run over by a vehicle; still alive but some internal organs extruded from the body;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4867832477; Occurrence Remarks: A little baby! Found while bush wacking, coiled on a burnt branch of a Coastal Live Oak.;; Coordinate Uncertainty in Meters: 165.00000.

GBIFID: 4867622104; Occurrence Remarks: Southern Pacific rattlesnake, Indian canyon road;; Coordinate Uncertainty in Meters: 149.00000.

GBIFID: 4868144100; Occurrence Remarks: Young from last August. Found basking on the road and almost got run over. Moved it off the road.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 4867609916; Occurrence Remarks: Maybe intergrade ssp;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 4867789820; Occurrence Remarks: Photo: R. Waidner;; Coordinate Uncertainty in Meters: 39.00000.

Los Angeles, California: 34.394888, -118.376133: : 5/26/2024: Alexander Gregory Mason: 26 May 2024 :

Santa Barbara, California: 34.4756, -119.706087: : 6/5/2024: daniellehoekstra: 5 Jun 2024 :

GBIFID: 2236286937; Occurrence Remarks: Little juvenile, one button rattle;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4901265070; Occurrence Remarks: Near Soledad/Pole Canyon;; Coordinate Uncertainty in Meters: 400.00000.

GBIFID: 4908841685; Occurrence Remarks: Unfortunately, a DOR.;; Coordinate Uncertainty in Meters: 3347.00000.

GBIFID: 4908017895; Occurrence Remarks: Large adult seen at night near the house.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4937236530; Occurrence Remarks: Bear Divide One of possibly two...I saw one that I didnt get a photo of about 30 feet from this one. The first one slithered up into dense brush on the hillside. About 5 minutes later I ran into this one about 30 feet from the first. I would think if it was the same one, I would have noticed or heard it moving but perhaps not.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4923896289; Occurrence Remarks: a pair, one dark and one light, pre or post copulation (?);; Coordinate Uncertainty in Meters: 162.00000.

GBIFID: 4936994891; Occurrence Remarks: Bad picture. It did have a rattle.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936185027; Occurrence Remarks: Found sleeping in a burrow;; Coordinate Uncertainty in Meters: 126.00000.

GBIFID: 4946122465; Occurrence Remarks: on road.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1227743229; Occurrence Remarks: Intergrade helleri X oreganus;; Coordinate Uncertainty in Meters: 28818.00000.

Santa Barbara, California: 34.474638, -119.688212: : 10/19/2024: Leslie Huerta Gonzalez: 19 Oct 2024 :

San Bernardino, California: 34.380272, -117.153481: : 9/23/2022: slow_stalks_hard_hooksets: 23 Sep 2022 :

Los Angeles, California: 34.379615, -118.437696: : 1/28/2025: Lightning Star Sky / Skyler Noah Wall: 28 Jan 2025 :

GBIFID: 5076949120; Occurrence Remarks: A baby rattlesnake (perhaps a western?);; Coordinate Uncertainty in Meters: 6671.00000.

GBIFID: 5087221446; Occurrence Remarks: Tiny little guy!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5087570759; Occurrence Remarks: Under cover, ambient temperature about 40┬░ F;; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.42844, -118.585774: : 5/16/2018: NHMLA Community Science Program: 16 May 2018 :
GBIFID: 2252070550; Occurrence Remarks: Observation and photo by William Barnes, sent to rascals@nhm.org;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 5133157688; Occurrence Remarks: Relocated;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 5133362563; Occurrence Remarks: The coiled up snake was only about 4ΓÇ¥ in diameter, a peaceful baby found under a log;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2269272841; Occurrence Remarks: This is a juvenile, about 15 inches long;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 2269306770; Occurrence Remarks: Seen in the oak grove at Descanso Gardens;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5140122895; Occurrence Remarks: near Botany Trail;; Coordinate Uncertainty in Meters: 191.00000.

Los Angeles, California: 34.438281, -118.364028: : 5/3/2025: Joseph Decruyenaere: 3 May 2025 :

GBIFID: 5153240634; Occurrence Remarks: A warm morning, about 85 F; seen motionless on a dirt road in oak / pine woodland, and when it sensed two human hikers, it reversed course back into brush and rocks. Small stream within 20 meters of site. Rattled as it retreated.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5153330538; Occurrence Remarks: Seen crossing the road during the heat of the day. Took a few quick photos before escorting it to the shade of a bush.;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 5166760068; Occurrence Remarks: big guy;; Coordinate Uncertainty in Meters: 23.00000.

Santa Barbara, California: 34.6864, -120.0505: : 5/17/2025: Leslie Huerta Gonzalez: 17 May 2025 :

GBIFID: 5167900180; Occurrence Remarks: 8+ individuals congregating in a hibernaculum;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5176365981; Occurrence Remarks: Did it just eat something or is it pregnant?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5177362364; Occurrence Remarks: Two adults, one with a good sized dinner half way into its mouth.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2294504012; Occurrence Remarks: Found in the evening, coiled quietly amongst lava rocks. Looked like it was keeping warm. Never rattled, or showed threatening behavior. Took pics, then left without incident.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5206295714; Occurrence Remarks: Healthy female;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 5206133678; Occurrence Remarks: Relocated this little guy was under someones car he was safely moved to the wild;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5205896067; Occurrence Remarks: First snake I spotted, @herphendrie found the first 2 Hammondi. Also my first ever SoPac;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 5230499965; Occurrence Remarks: This dude just had a meal;; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.692763, -120.042: : 5/27/2025: Scott Mauffet-Smith: 27 May 2025 :

GBIFID: 1265589010; Occurrence Remarks: Observation and photo by Karin Merit, sent via Facebook #natureinla;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 2350428932; Occurrence Remarks: Hard to see but snake was nestled in the shadows under tree roots;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 1269557127; Occurrence Remarks: Tiny neonate.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 2397625350; Occurrence Remarks: Unfortunately the snake was found dead tangled in netting in a garden on Friday, August 23, 2019 which is the first photo. The photos on the right were taken after it was frozen. It will be delivered to the LA Natural History Museum.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3067854662; Occurrence Remarks: Right off the side of the trail! Did not acknowledge me at all (no rattling or movement);; Coordinate Uncertainty in Meters: 132.00000.

GBIFID: 2422909726; Occurrence Remarks: Observation and photo by William Barnes sent via email;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1269569180; Occurrence Remarks: Devils Punchbowl Natural Area;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1269570884; Occurrence Remarks: Dog damaged.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1269581721; Occurrence Remarks: 2nd juvi in 2 days, same property.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 891019011; Occurrence Remarks: Juvenile Rattlesnake along the trail. Walked right past it without it making a sound.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891065533; Occurrence Remarks: Rattlesnake soaking up the southern cal rays on a rock;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1270058193; Occurrence Remarks: Neonates every day.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1270058173; Occurrence Remarks: More neonates;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1270059102; Occurrence Remarks: Another neonate. Hiding in brick wall;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 2447948935; Occurrence Remarks: Found this little baby rattler on the steps;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2465266780; Occurrence Remarks: This was surprising to see. I found this snake out in the recently burned area from the cave fire today after a long cold and drizzling day.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2540781844; Occurrence Remarks: Juvenile (single button) out at night along edge of creek.;; Coordinate Uncertainty in Meters: 2549.00000.

GBIFID: 1291139907; Occurrence Remarks: Strange to have a neo this time of year.;; Coordinate Uncertainty in Meters: 1000.00000.

GBIFID: 2576390078; Occurrence Remarks: Found on a hike near castaic lake close to Santa Clarita.;; Coordinate Uncertainty in Meters: 19875.00000.

GBIFID: 891746700; Occurrence Remarks: This observation was emailed to the rascals@nhm.org account. Observation and photos were made by Clare MK.;; Coordinate Uncertainty in Meters: 3317.00000.

GBIFID: 2609111277; Occurrence Remarks: Was sitting on top of high boulder, only started moving down because I was too close.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 2611232523; Occurrence Remarks: Hunting a lizard;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2611306122; Occurrence Remarks: Rattlesnake, but what kind?;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2611140493; Occurrence Remarks: Neonate, not yet shed;; Coordinate Uncertainty in Meters: 427.00000.

GBIFID: 2611302518; Occurrence Remarks: Neonate, not yet shed;; Coordinate Uncertainty in Meters: 318.00000.

GBIFID: 2611173706; Occurrence Remarks: Southern Pacific relocated away from a jail facility.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4936984988; Occurrence Remarks: I heard rattling and rustling when I located these two rattlesnakes on a hill trailside. I kept a good distance and watched them for about 15 minutes while they both were throwing each other to the ground. I assumed these were two males fighting over a female but I did not see a third snake.;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 2626149052; Occurrence Remarks: Ground squirrel standing their ground!;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2626370037; Occurrence Remarks: Image taken in a very desert-like area in Santa Clarita. The snake was found by a home and the owners had picked it up on the shovel so that they could move it to an area that was not so close to their home. The snake was rattling its tail while the image was taken and seemed angered.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 2626575433; Occurrence Remarks: Under a willow tree in the Santa Clara river bottom;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2626556856; Occurrence Remarks: Just a rattle alone in the trail;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2626234318; Occurrence Remarks: Jameson Lake;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2634070096; Occurrence Remarks: 5 minutes apart, on the road;; Coordinate Uncertainty in Meters: 517.00000.

GBIFID: 2634547311; Occurrence Remarks: Crotalus helleri 3 Jun 2020 CA, LA Co., Grassy Hollow;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500221653; Occurrence Remarks: Found dead.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1453457775; Occurrence Remarks: Our 8-year olds found this on Rattlesnake Trail this morning!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453522468; Occurrence Remarks: At San Marcos Foothills Preserve gate;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453524258; Occurrence Remarks: Zoom in just under the poison oak in the center of the picture. With a phone camera we were unable to get a better picture for obvious reasons.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826185092; Occurrence Remarks: Second larger and very dark rattler also present; no photo taken before it left.;; Coordinate Uncertainty in Meters: 134.00000.

GBIFID: 1457588274; Occurrence Remarks: Moving from the Bouquet Cyn reservoir side of the road on to the hillside.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 1457604196; Occurrence Remarks: Crossed the road from the reservoir side.;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 2851156650; Occurrence Remarks: Observed and photographed by J. Uhlenkott.;; Coordinate Uncertainty in Meters: 59.00000.

Los Angeles, California: 34.599788, -118.721642: : 3/20/2026: Archer Barrett: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Ventura, California: 34.449124, -119.056563: : 3/11/2017: NHMLA Community Science Program: 11 Mar 2017 :
GBIFID: 1500280834; Occurrence Remarks: Photo and Observation via Email by Rosemary Guadalajara;; Coordinate Uncertainty in Meters: 194.00000.

GBIFID: 1500296261; Occurrence Remarks: In the bathroom at Cachuma Lake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500300451; Occurrence Remarks: Male and female were having fun in the weeds.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1500315665; Occurrence Remarks: Field Notes - Pacific rattlesnake competing fir a view in the scope! It moved along soon after these pics;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 1500351709; Occurrence Remarks: Three buttons on tail;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 899969906; Occurrence Remarks: Snake porn;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1563444765; Occurrence Remarks: About 5000 ft off of Hwy 2;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571141194; Occurrence Remarks: 2 neos, same barn Wednesday. 4 so far there.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3018096832; Occurrence Remarks: Scanned from an old slide. Date is accurate; time is not. Location is accurate but imprecise.;; Coordinate Uncertainty in Meters: 571.00000.

GBIFID: 911498246; Occurrence Remarks: Juvenile crossing the dry riverbed.;; Coordinate Uncertainty in Meters: 437.00000.

GBIFID: 3058686963; Occurrence Remarks: Found on the top of Burnt Peak in 2012.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 1580508391; Occurrence Remarks: Female. Gravid?;; Coordinate Uncertainty in Meters: 745.00000.

GBIFID: 3079710123; Occurrence Remarks: Rattlesnake on the side of the road, heading out of Fish Canyon.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3090592295; Occurrence Remarks: Two photos of the same button baby snake. Anyone recognize the species of this young rattler?;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3090968520; Occurrence Remarks: Seventh one of the week! Got to be a nest nearby...;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3090911578; Occurrence Remarks: Jameson Lake;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3090871641; Occurrence Remarks: Rattler swallowing a young rabbit;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3097259631; Occurrence Remarks: Vasquez Rocks Natural Area;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1621776739; Occurrence Remarks: This snake was about 18 inches long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3109109414; Occurrence Remarks: Little guy, only a few rattles;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 923923641; Occurrence Remarks: This Rattlesnake was found thermoregulating on a concrete retaining wall. A Fire Camp inmate was standing within one foot of the snake. Fortunately for him, the cool temps kept the snake sluggish.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3112534523; Occurrence Remarks: Tapia Canyon.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3112942411; Occurrence Remarks: Devils Punchbowl Natural Area At the time of this observation the Devils Punchbowl County Park is closed to the public following damage from the Bobcat Fire. As LA County Parks Staff, I have permission to enter this area and document post fire recovery.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3112507737; Occurrence Remarks: Vasquez Rocks Natural Area;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1024188388; Occurrence Remarks: Climbed up 3 feet to curl up in a birds nest. Long wait until next spring.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3113570297; Occurrence Remarks: Forest Route 6N24 near Tule Canyon. May 9, 2021.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3117810966; Occurrence Remarks: Only about 1 foot long, a juvenile.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1024192444; Occurrence Remarks: This rattlesnake was chilling by the side of the road as I came off Pratt Trail;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 1024192416; Occurrence Remarks: As I was walking up the entrance to the trail, just after crossing the dry creek, I spotted this adult rattlesnake in the middle of the trail. I stopped and watched it for a good 10 minutes as it basked in the sun. It knew I was there. It looked at me briefly, then slithered away. Beautiful.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 1668817095; Occurrence Remarks: Large snake at entrance of rodent burrow. It went back inside the burrow after this photo was taken.;; Coordinate Uncertainty in Meters: 107.00000.

GBIFID: 1024194840; Occurrence Remarks: Two found together;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3124765532; Occurrence Remarks: Rattlesnake on the dirt road. Warm Springs Fish Canyon Trail. May 20, 2021.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1668842221; Occurrence Remarks: Large snake, in reserve area of Puma Canyon Ecological Reserve;; Coordinate Uncertainty in Meters: 809.00000.

GBIFID: 1668842266; Occurrence Remarks: In the Puma Canyon Ecological Reserve, owned by Transition Habitat Conservancy;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1668854249; Occurrence Remarks: Trying to update all my rattlesanke photos. This guy was on my back deck. Rattled at the stray cat as it walked by. The cat paid no nevermind. It was taken off the property and set loose nearby.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1668854296; Occurrence Remarks: I had the plumber over. He ran in and told me there was a rattlesnake under his truck. I had to shoo it away. It was relocated nearby.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3302285598; Occurrence Remarks: The rattle is visible even if not much else is;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3301786112; Occurrence Remarks: Odd to see one out at this time when its this dry and cold (57┬░F). Also unusual to see one this far out of the mountains.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1024207706; Occurrence Remarks: Spunky Canyon Road, Angeles Forest near Bouquet Reservoir - Clare MK Observation and photos by Clare MK, sent to rascals@nhm.org.;; Coordinate Uncertainty in Meters: 1770.00000.

GBIFID: 3314547340; Occurrence Remarks: Visual encounter with Jerry Dion Morrill;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 3321031496; Occurrence Remarks: Rattlesnake just outside of the Sports Complex. Got real close to stepping on this one if I wasnt looking down.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1024223489; Occurrence Remarks: Another very pretty Helleri.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3327857496; Occurrence Remarks: In an area burned by the Bobcat fire.;; Coordinate Uncertainty in Meters: 1789.00000.

GBIFID: 3355021170; Occurrence Remarks: Ambient temperature 74 Fahrenheit, was starting to cross road but driven back into bushes by flash photography...;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3384381275; Occurrence Remarks: Estimated 8 inches long- very young!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3385181054; Occurrence Remarks: Rattlesnake found in the neighborhood.;; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.604686, -118.659007: : 3/14/2026: terrasaurus_: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.60442, -118.666652: : 3/14/2026: terrasaurus_: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

San Bernardino, California: 34.368089, -117.621461: : 8/22/2025: Matt Gruen: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 28846.00000.

Santa Barbara, California: 34.545254, -119.792202: : 8/23/2025: Chris Orr: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 31.00000.

Los Angeles, California: 34.590912, -118.459953: : 9/17/2025: Matthew Feany: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 25.00000.

Los Angeles, California: 34.597597, -117.693206: : 6/24/2026: drbrachydactyl: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

Los Angeles, California: 34.379825, -118.403879: : 8/23/2025: Lightning Star Sky / Skyler Noah Wall: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.454961, -117.871465: : 3/29/2026: Angelo Caseres: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Los Angeles, California: 34.603976, -118.666285: : 3/14/2026: molafish: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.411728, -119.503128: : 7/17/2026: avivalie: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 11458.00000.

Santa Barbara, California: 34.507275, -119.670845: : 7/19/2026: davemont: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Luis Obispo, California: 35.282746, -120.659616: : 3/15/2026: PATRICK WHIPPLE: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 4972.00000.

San Luis Obispo, California: 35.256642, -120.891197: : 3/20/2026: davidloeb: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.120353, -119.630508: : 3/21/2026: russnamitz: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Occurrence Remarks: 2025-07-23 ; Western Rattlesnake, Crotalus viridis - ; fresh dor supple 45 cm ttl, N bd lane, Foxen Cyn Rd by Tres Hermanas, SBA Co, CA ; 34.798190, -120.188207 - 25 =; Coordinate Uncertainty in Meters: 25.00000.

San Luis Obispo, California: 35.253178, -120.875892: : 7/31/2025: Learning Among the Oaks: 31 Jul 2025 :
Occurrence Remarks: Occurrence Remarks: Bilingual native plant hike; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.153795, -120.651672: : 9/30/2025: Learning Among the Oaks: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Kern, California: 34.929642, -119.377892: : 10/31/2025: Genyss Duncan: 31 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Found it under a red metal panel.; Coordinate Uncertainty in Meters: 6484.00000.

San Luis Obispo, California: 35.273392, -120.89148: : 11/2/2025: jprado: 2 Nov 2025 ; Coordinate Uncertainty in Meters: 6.00000.

San Luis Obispo, California: 35.36527, -120.905722: : 3/21/2024: bumblebeetle: 21 Mar 2024 ; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: Basking on a coverboard. Same individual as (https://www.inaturalist.org/observations/206723267); Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: I heard a weird rattle sound in the grass and carefully looked over to see the smaller, brown snake (male) courting the larger, dark snake (larger female). I know it was courting because it was doing the jittery rapid movement that males to do to stimulate females. When it was doing this, the female wagged her tail back in forth, which is what caused the rattling noise I heard earlier.; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: basking off the side of the trail.; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: Seen basking on top of the grass just of the side of the trail on the top of a steep ridgeline. The weather was foggy and the ground was just starting to warm up. Definitely the coolest rattlesnake find in habitat that I have experienced so far.; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: Western rattlesnake predating on giant kangaroo rat; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Little guy; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.270378, -120.861642: : 3/29/2026: mworph: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.055703, -119.592605: : 5/30/2025: russnamitz: 30 May 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.205595, -119.853522: : 5/30/2025: russnamitz: 30 May 2025 ; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4091372087; Occurrence Remarks: found skinned, headless and rattle-less;; Coordinate Uncertainty in Meters: 15.00000.

San Luis Obispo, California: 35.159683, -120.649522: : 4/1/2022: Rachel Lee Harper: 1 Apr 2022 :

GBIFID: 4111879000; Occurrence Remarks: Juvenile curled up on the side of the trail.;; Coordinate Uncertainty in Meters: 257.00000.

San Luis Obispo, California: 35.271038, -120.885414: : 3/4/2026: adinghi: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

San Luis Obispo, California: 35.241316, -119.902766: : 3/28/2026: k_510wildlife: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1088980248; Occurrence Remarks: A large melanistic individual, sluggish, ca. 70-75d F, fog cleared about 45-60 mins previous.;; Coordinate Uncertainty in Meters: 20.00000.

San Luis Obispo, California: 35.151737, -119.966625: : 4/7/2026: rowancalpoly: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: I promise Im not as close as the photos would make it seem.; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.863447, -120.50035: : 7/1/2026: bobdahm: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

San Luis Obispo, California: 34.986033, -119.481863: : 4/17/2026: russnamitz: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.323032, -120.914667: : 3/31/2026: milo135: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.272489, -120.889587: : 4/19/2026: inlay2024: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 35.00000.

San Luis Obispo, California: 35.26905, -120.874428: : 4/15/2026: sierraransweiler: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.200619, -120.897777: : 4/20/2026: Andrew Harmer: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.272267, -120.88893: : 4/19/2026: squishyjarvis: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Noodle did not move; health unknown.; Coordinate Uncertainty in Meters: 0.11000.

Kern, California: 34.984128, -119.472488: : 4/19/2026: Genevieve G. Mount: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Kern, California: 34.950177, -119.162812: : 4/18/2026: Georgie Duarte: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

San Luis Obispo, California: 35.070175, -119.654594: : 4/14/2026: Kurt Rademacher: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Kern, California: 34.984303, -119.186783: : 4/24/2026: Jose Esparza: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Luis Obispo, California: 35.336287, -120.616098: : 11/8/2025: Maev Douglas: 8 Nov 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.269525, -120.879647: : 11/13/2025: sierraransweiler: 13 Nov 2025 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.294312, -120.643738: : 5/20/2026: yarndiva: 20 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.272042, -120.890603: : 5/20/2026: Csilla Czako: 20 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Luis Obispo, California: 35.10186, -119.731613: : 5/20/2026: bryceking: 20 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Kern, California: 34.994072, -118.350047: : 5/12/2026: jacob miranda: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.770745, -119.938163: : 5/22/2026: curious-corvid: 22 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.09495, -119.750647: : 4/19/2026: Jacob Martin: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 1.11000.

San Luis Obispo, California: 35.272038, -120.890587: : 5/20/2026: Jason Best: 20 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Los Angeles, California: 34.747911, -118.638256: : 4/25/2026: california_every_reptile: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 28790.00000.

San Luis Obispo, California: 35.281475, -120.871742: : 3/27/2026: Lizzie Sheridan: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1847597278; Occurrence Remarks: Remains of Juvenile found with lizard sticking out of belly. Likely run over by a car.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 1850908634; Occurrence Remarks: Deceased, with lizard meal sticking out;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3785072949; Occurrence Remarks: Carcass. It looked like someone had killed it with blunt force to the area near the head.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 3773356646; Occurrence Remarks: Healthy individual under AC;; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: https://youtube.com/shorts/O61cKB5IbjA?si=tkdeJjLcemYua4nl; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.293225, -120.855238: : 5/9/2025: kdisselhorst: 9 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Kern, California: 35.191088, -119.432905: : 2/26/2026: alyssala94: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Barbara, California: 34.85923, -120.540566: : 2/27/2026: David Kisner: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.111459, -119.941598: : 2/28/2026: Andrew Martinez: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

San Luis Obispo, California: 35.33772, -120.748328: : 3/1/2026: skullroy: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Barbara, California: 34.693095, -120.042519: : 3/2/2026: Douglas J. Long: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.132339, -119.833062: : 3/12/2026: rocky: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Los Angeles, California: 34.725308, -118.713263: : 3/13/2026: Mike Spore: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Los Angeles, California: 34.777313, -118.732138: : 4/24/2026: bradrumble: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.330178, -120.625237: : 3/22/2026: redrovertracy: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.311875, -120.65252: : 4/28/2026: Mike Butler: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: DOR :(; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.26645, -120.880342: : 5/1/2026: Candice Moss: 1 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Luis Obispo, California: 35.349711, -120.646697: : 4/30/2026: Zooey Sandel: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Santa Barbara, California: 34.855474, -120.545186: : 4/28/2026: David Kisner: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.27204, -120.894145: : 5/2/2026: funky_bananas: 2 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 34.935219, -118.471054: : 5/4/2026: sangsterj: 4 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Santa Barbara, California: 34.914678, -119.743906: : 3/27/2026: Chris Berry: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.296538, -120.807398: : 5/6/2026: jmongoose: 6 May 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.301353, -120.871712: : 5/7/2026: Jacob: 7 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.258175, -120.894302: : 5/9/2026: cassbrooklyn: 9 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: dead on road; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Tiny, a baby. Unfortunately dead, probably run over by a mountain bike.; Coordinate Uncertainty in Meters: 7.00000.

San Luis Obispo, California: 35.189008, -119.969169: : 3/23/2026: Teale Fristoe: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

San Luis Obispo, California: 35.055413, -119.550774: : 3/22/2026: Sean Clark: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 10484.00000.

Santa Barbara, California: 34.693233, -120.04055: : 4/10/2026: zimmstella: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.325803, -120.847559: : 5/27/2025: Ryan Singer: 27 May 2025 ; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.193936, -120.430497: : 5/8/2025: pegisuz: 8 May 2025 ; Coordinate Uncertainty in Meters: 28734.00000.

Los Angeles, California: 34.754221, -118.748742: : 4/2/2025: herphendrie: 2 Apr 2025 ; Coordinate Uncertainty in Meters: 28790.00000.

Santa Barbara, California: 34.693118, -120.042292: : 9/20/2025: Douglas J. Long: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 20.00000.

San Luis Obispo, California: 35.272375, -120.894538: : 4/18/2026: sarahbart: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Kern, California: 35.110191, -118.260162: : 5/8/2026: sangsterj: 8 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 34.986092, -119.481888: : 5/13/2026: russnamitz: 13 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

San Luis Obispo, California: 35.293287, -120.88398: : 5/15/2026: anemone33: 15 May 2026 ; Coordinate Uncertainty in Meters: 3102.00000.

San Luis Obispo, California: 35.146247, -119.861728: : 5/16/2026: Trevor Harding: 16 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.260975, -120.862245: : 5/17/2026: Carly King: 17 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Hurricane Deck; Coordinate Uncertainty in Meters: 194.00000.

San Luis Obispo, California: 35.307975, -120.843003: : 4/3/2026: Jon McCoy: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.734457, -118.656557: : 3/15/2026: Dan Horowitz: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Phone photo is for location Metadata; Coordinate Uncertainty in Meters: 0.11000.

Santa Barbara, California: 34.693226, -120.042477: : 3/18/2026: Douglas J. Long: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

San Luis Obispo, California: 35.120525, -119.628517: : 3/18/2026: Zooey Sandel: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.120567, -119.630622: : 3/18/2026: Zooey Sandel: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.304817, -120.659088: : 3/19/2026: Jake Jackson: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.25315, -120.696922: : 3/20/2026: jmongoose: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.33028, -120.625288: : 3/22/2026: redrovertracy: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Los Angeles, California: 34.758747, -118.720597: : 3/22/2026: Gom: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Luis Obispo, California: 35.244546, -119.771901: : 3/21/2026: Ken Chamberlain: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 3059.00000.

Ventura, California: 34.72398, -118.865417: : 3/22/2026: Brandon Troth: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Luis Obispo, California: 35.1659, -119.967095: : 3/20/2026: Jon McCoy: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Los Angeles, California: 34.724518, -118.405991: : 3/21/2026: Boaz Benaiah Solorio: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 755.00000.

Kern, California: 34.984675, -119.185028: : 3/24/2026: russnamitz: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Luis Obispo, California: 35.303775, -120.650108: : 3/25/2026: runforcandy: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Sad; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.01155, -119.487428: : 3/21/2026: diannabeck27: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Barbara, California: 34.756046, -119.786589: : 3/27/2026: Garrett Craig: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Santa Barbara, California: 34.900008, -119.84787: : 3/28/2026: russnamitz: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Los Angeles County, CA; Coordinate Uncertainty in Meters: 28790.00000.

Kern, California: 35.250294, -119.588511: : 3/29/2026: GinaGPark: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.241428, -119.9027: : 3/28/2026: GinaGPark: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.127611, -119.841478: : 3/29/2026: Rod: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 19.00000.

San Luis Obispo, California: 35.330283, -120.625305: : 3/22/2026: redrovertracy: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.241308, -119.902761: : 3/28/2026: Siddarth Machado: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Luis Obispo, California: 35.063344, -119.47395: : 3/19/2026: Dylan Winkler: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

Occurrence Remarks: Photos are zoomed in. I was a safe distance away.; Coordinate Uncertainty in Meters: 3.00000.

Los Angeles, California: 34.782397, -118.806533: : 4/3/2026: bradrumble: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.146222, -119.861908: : 4/5/2026: russnamitz: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 114.00000.

San Luis Obispo, California: 35.14619, -119.861695: : 4/5/2026: russnamitz: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Luis Obispo, California: 35.123898, -119.857475: : 4/5/2026: Graham Montgomery: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.186675, -119.983855: : 4/7/2026: keeganfish: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.168501, -119.94555: : 4/7/2026: Isaiah Woodard: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

San Luis Obispo, California: 35.06692, -119.917737: : 4/7/2026: Isaiah Woodard: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

Kern, California: 35.341645, -118.079892: : 4/8/2026: imwiththebears: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 765.00000.

San Luis Obispo, California: 35.334041, -119.84738: : 4/4/2026: Henry Fabian: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 5450.00000.

Kern, California: 34.860438, -118.312559: : 4/9/2026: Presley James Riggs: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

San Luis Obispo, California: 35.273828, -120.894613: : 4/9/2026: johnnyrafer: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 34.992663, -118.395535: : 4/9/2026: sarahmarten: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 2648.00000.

Kern, California: 35.342613, -118.632155: : 4/7/2026: Ryan Donnelly: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.083701, -120.650587: : 10/7/2023: Ryan Singer: 7 Oct 2023 ; Coordinate Uncertainty in Meters: 28734.00000.

Santa Barbara, California: 34.693195, -120.042792: : 10/2/2025: Douglas J. Long: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 18.00000.

Kern, California: 35.124253, -118.572288: : 6/1/2026: olleander-schwag: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.153939, -119.808992: : 2/22/2025: russnamitz: 22 Feb 2025 ; Coordinate Uncertainty in Meters: 10.00000.

San Luis Obispo, California: 35.206603, -119.865403: : 3/21/2025: russnamitz: 21 Mar 2025 ; Coordinate Uncertainty in Meters: 10.00000.

San Luis Obispo, California: 35.114383, -119.740983: : 3/21/2025: russnamitz: 21 Mar 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Kern, California: 34.945688, -119.401025: : 5/31/2025: russnamitz: 31 May 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.249588, -119.942117: : 6/4/2025: russnamitz: 4 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.018108, -119.529738: : 6/5/2025: russnamitz: 5 Jun 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.087928, -119.711892: : 9/6/2025: russnamitz: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Adult male; Coordinate Uncertainty in Meters: 7591.00000.

San Luis Obispo, California: 35.273874, -120.893452: : 6/29/2025: bobdahm: 29 Jun 2025 ; Coordinate Uncertainty in Meters: 56.00000.

San Luis Obispo, California: 35.334473, -120.838767: : 11/27/2025: Parsa Fard: 27 Nov 2025 ; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 34.9686, -120.398955: : 10/19/2025: Kaylee Taing: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Always gotta watch what youΓÇÖre flipping! Another awesome one San Luis Obispo County; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: 3 individuals found under a coverboard. The individuals shown in photos 2 and 3 are the same ones as seen in https://www.inaturalist.org/observations/280427583; Coordinate Uncertainty in Meters: 28706.00000.

Occurrence Remarks: Found under a coverboard. Same individual as https://www.inaturalist.org/observations/280427586; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.27395, -120.893773: : 6/29/2025: bobdahm: 29 Jun 2025 ; Coordinate Uncertainty in Meters: 114.00000.

Santa Barbara, California: 34.859104, -120.540008: : 7/1/2026: David Kisner: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 200.00000.

San Luis Obispo, California: 35.273839, -120.893437: : 6/8/2026: Tom Seville: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.319363, -119.220367: : 6/9/2026: John Sterling: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 30.00000.

San Luis Obispo, California: 35.246144, -119.91211: : 6/6/2026: dontezimo: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 710.00000.

San Luis Obispo, California: 34.986063, -119.481858: : 6/12/2026: russnamitz: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Kern, California: 35.297653, -118.613905: : 3/31/2025: Matt Reala: 31 Mar 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Barbara, California: 34.855928, -120.504041: : 6/16/2026: bobdahm: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 30618.00000.

Santa Barbara, California: 34.886612, -119.623466: : 6/23/2026: Allison Leete: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 57.00000.

San Luis Obispo, California: 35.274125, -120.889765: : 7/13/2026: Kassidy Wilkins: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 478.00000.

Santa Barbara, California: 34.836462, -120.478089: : 6/29/2026: bobdahm: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

San Luis Obispo, California: 35.273596, -120.892602: : 6/29/2026: Isaac Capp: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Santa Barbara, California: 34.693166, -120.042356: : 7/1/2026: Douglas J. Long: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 21.00000.

San Luis Obispo, California: 34.986113, -119.481863: : 7/1/2026: russnamitz: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.272435, -120.892106: : 6/20/2026: Emily: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 182.00000.

GBIFID: 3759168129; Occurrence Remarks: Flipped under a log, last yearΓÇÖs young;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3759207120; Occurrence Remarks: Flipped under a log;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1838358226; Occurrence Remarks: Young of the year found dead on side of road;; Coordinate Uncertainty in Meters: 37.00000.

GBIFID: 3759480015; Occurrence Remarks: 1-foot long juvenile. Pismo Preserve, Pismo Beach, CA.;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 3759993113; Occurrence Remarks: A big one with one button. Deformed?;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.27105, -120.894822: : 6/12/2019: John Joseph Giacinto: 12 Jun 2019 :

GBIFID: 3764386867; Occurrence Remarks: Middle of Reservoir Canyon Trail above tree swing.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3773528847; Occurrence Remarks: A geezer of a crote. Under AC, obviously.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 3860414466; Occurrence Remarks: Seen near Point Sal, Guadalupe, CA.;; Coordinate Uncertainty in Meters: 1093.00000.

GBIFID: 3860484286; Occurrence Remarks: We saw at least 3 individuals.;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.260433, -120.891: : 6/4/2022: Dylan Kriegman: 4 Jun 2022 :
GBIFID: 3858493507; Occurrence Remarks: Seen by friend;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1847472393; Occurrence Remarks: Found sunning on the asphalt in the middle of the road.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1065611701; Occurrence Remarks: Almost stepped on this female.;; Coordinate Uncertainty in Meters: 32443.00000.

San Luis Obispo, California: 35.272072, -120.893622: : 7/6/2022: John Joseph Giacinto: 6 Jul 2022 :

GBIFID: 1847600269; Occurrence Remarks: Dead on road. :-(;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 1848782133; Occurrence Remarks: Collected with Cal Poly herpetology class and proper permits;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3923437626; Occurrence Remarks: Large snake. Good 3ft. In area with no public access.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3947385094; Occurrence Remarks: Flat, yet very alive!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1901028415; Occurrence Remarks: One adult western rattlesnake sat at entrance to a burrow. Upon moving camera close for photo, snake retreated into burrow before a shot could be taken. Second image is lighted and show a small portion of the snakes body.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1880625476; Occurrence Remarks: Is there overlap between C. oreganus oreganus and C.o. helleri here?;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 3963640169; Occurrence Remarks: Young snake, right off main bluff trail.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1883548101; Occurrence Remarks: It was about 60 degrees and cloudy and misty. Snake seemed pretty lethargic and it took several attempts to get it to move away from the trail.;; Coordinate Uncertainty in Meters: 88.00000.

GBIFID: 4067538424; Occurrence Remarks: Quickly moved into rocks and rattled after noticing us. Approximately 3.5 long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4091433280; Occurrence Remarks: Very small juvenile, on ledge right off trail within 2 ft of hikers, sunning on cliffside southfacing at waist to chest high off ground;; Coordinate Uncertainty in Meters: 101.00000.

GBIFID: 4091473449; Occurrence Remarks: Reached down to pull put a large, invasive mustard on a sand bank, and this guy tumbled out. Its a wonder I wasnt bit. I let out a scream, got the heebie jeebies for a few minutes and we both went on our way.;; Coordinate Uncertainty in Meters: 769.00000.

GBIFID: 4096512240; Occurrence Remarks: Two males fighting for a female under the board;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4096970533; Occurrence Remarks: Dead on road;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4936138559; Occurrence Remarks: Three feet long. Dead or dying (see broken neck), but we stayed far away, just in case.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4112192339; Occurrence Remarks: Cloudy flippin after midterms;; Coordinate Uncertainty in Meters: 28706.00000.

Los Angeles, California: 34.722576, -118.450944: : 5/10/2023: Transition Habitat Conservancy: 10 May 2023 :

GBIFID: 4936899220; Occurrence Remarks: Carrizo Plain;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936394242; Occurrence Remarks: Carrizo Plain Three bells sparrows were following this rattlesnake..Im hoping it didnt get a nestling. I dont think it did as the birds were quiet and just following it into a bush. I didnt stick around to find out what happened as I didnt want to witness a sad moment even though I know its part of nature;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4126987238; Occurrence Remarks: Photo by Maureen;; Coordinate Uncertainty in Meters: 3649.00000.

GBIFID: 1913669148; Occurrence Remarks: I do not know my snakes very well. My ID is solely based on a web search of California Rattlesnakes.;; Coordinate Uncertainty in Meters: 162.00000.

GBIFID: 4133976003; Occurrence Remarks: Relocation;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4134027807; Occurrence Remarks: In situ;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.3068, -120.84738: : 4/5/2023: Evelyn Zamora: 5 Apr 2023 :
GBIFID: 4138023792; Occurrence Remarks: Very easily camouflaged with the branches around and it moved very slow;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1914242234; Occurrence Remarks: Yellow jackets were all over and inside one area of road kill. Someone driving by said second one theyd seen that day.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4138554344; Occurrence Remarks: About 10 long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4145241439; Occurrence Remarks: Was so cool to see up close! It slithered across the trail to hide in the bushes and shook its rattle at me a few times when I was filming it but stayed a safe distance back :);; Coordinate Uncertainty in Meters: 1158.00000.

GBIFID: 1920812812; Occurrence Remarks: Wind Wolves Preserve;; Coordinate Uncertainty in Meters: 1052.00000.

San Luis Obispo, California: 35.256651, -120.887856: : 7/15/2023: Barry Langdon-Lassagne: 15 Jul 2023 :

GBIFID: 4171870477; Occurrence Remarks: Dead;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4177250462; Occurrence Remarks: Found dead, no apparent cause.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 4405587338; Occurrence Remarks: With at least one California ground squirrel inside.;; Coordinate Uncertainty in Meters: 2.00000.

San Luis Obispo, California: 35.313938, -120.859566: : 10/8/2023: severalcreatures: 8 Oct 2023 :

GBIFID: 4424270276; Occurrence Remarks: At the visitor center;; Coordinate Uncertainty in Meters: 186.00000.

GBIFID: 4430973246; Occurrence Remarks: was coiled up on the edge of the road. The weather has been unseasonably warm for SLO, with the high for the day being 101┬░F. The ground temperature about an hour later was 72┬░F, with the snake still sitting in ambush.;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 4431144264; Occurrence Remarks: two individuals;; Coordinate Uncertainty in Meters: 118.00000.

GBIFID: 4438944086; Occurrence Remarks: Slithered back down toward the creek after noticing we saw it.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4440985413; Occurrence Remarks: Baby with one button.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4528069188; Occurrence Remarks: Male and female seen basking just a few feet from each other on an exposed rock outcrop at the top of a hill. Both were content to bask while being observed. Chimineas Ranch, accessed with permission from CDFW.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4528313209; Occurrence Remarks: A muddy female (likely recently emerged from winter brumation) and two young of the year in a double stack of metal sheets. The first young snake (photo 2) was crawling along side the metal sheet when found, while the second (photo 3) was at the bottom of the metal sheet. The female was in the middle of the two sheets. Possibly a female overwintering with her offspring from the previous summer (So cool!). Chimineas Ranch, accessed with permission from CDFW.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597541878; Occurrence Remarks: Found under a piece of concrete.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597086912; Occurrence Remarks: A female and newborn (photos 1-3), as well as a male, all found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597550927; Occurrence Remarks: Mating pair and a large male seen in this area.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597571924; Occurrence Remarks: 3 seen basking in this area (only two shown);; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597547871; Occurrence Remarks: Seen basking at the edge of a rock formation. Just one of 16 seen today!;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597090867; Occurrence Remarks: Was moving alongside a woodrat midden.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597574855; Occurrence Remarks: Same snake as seen nearly two hours earlier (https://www.inaturalist.org/observations/202771751). Had moved a few inches into a more shaded spot.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597585308; Occurrence Remarks: found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597168313; Occurrence Remarks: Mating pair found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597123169; Occurrence Remarks: found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597533220; Occurrence Remarks: Remains, found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4597536183; Occurrence Remarks: DOR :(;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4600091000; Occurrence Remarks: Mating pair found under a coverboard.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4600118281; Occurrence Remarks: Found under a large rock that was leaning on another rock. There was fresh grass pieces under the rock, so this snake may have been ambushing rodents along a rodent trail.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4606825816; Occurrence Remarks: Just a wee babe;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4936910613; Occurrence Remarks: Carrizo Plain Temp was in the mid to high 60s;; Coordinate Uncertainty in Meters: 122.00000.

San Luis Obispo, California: 35.087324, -119.688608: : 4/9/2024: naturephotosuze: 9 Apr 2024 :
GBIFID: 4937175748; Occurrence Remarks: Carrizo Plain;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4937142199; Occurrence Remarks: Carrizo Plain Very far away and snake slithered into the bush the minute it saw me. Squirrel in the background was giving alarm calls;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4855509986; Occurrence Remarks: found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4855097378; Occurrence Remarks: found under a metal sheet. Had a huge scar on its right side.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4854910449; Occurrence Remarks: Out on the crawl;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 2028506658; Occurrence Remarks: 2 tangled up if you look close;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.286574, -120.664876: : 5/8/2024: Barry Langdon-Lassagne: 8 May 2024 :
GBIFID: 4863810179; Occurrence Remarks: Snake was safely relocated to an open space preserve by Central Coast Snake Services;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4863841926; Occurrence Remarks: Was crossing the road in a wash.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 4863564426; Occurrence Remarks: Helped out of the road, of course;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 4867827082; Occurrence Remarks: 2 individuals found under a coverboard.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 2235519950; Occurrence Remarks: Was apparently dead already, probably hit by a car, though it was hard to tell because there was no very apparent injury. Maybe it was hit at the very tip of its head?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936627186; Occurrence Remarks: Carrizo Plain Out early on the road. I had a hard time getting it to move but suddenly it seemed to wake up and started coiling and rattling. I was a safe distance away but I was surprised to see some horses that were grazing more than 100 feet away behind a fence start running the minute they heard the rattle;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936603226; Occurrence Remarks: Carrizo Plain;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 4891689139; Occurrence Remarks: I accidentally uncovered this snakes hiding place. while going to get something to chase him off, i noticed the local nesting birds mostly bluebirds, chasing it off on their own. With loud clicking and dive bombing they chased this snake away.;; Coordinate Uncertainty in Meters: 66.00000.

GBIFID: 2236243596; Occurrence Remarks: Killed by something.;; Coordinate Uncertainty in Meters: 65.00000.

GBIFID: 4891899389; Occurrence Remarks: In campground bathroom;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.112, -119.739: : 6/9/2024: Hannah Girgente: 9 Jun 2024 :

GBIFID: 4892235318; Occurrence Remarks: In shed. Was coming out of a hole.;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.272142, -120.893647: : 6/15/2024: Lizzie Langdon-Lassagne: 15 Jun 2024 :

GBIFID: 2236877715; Occurrence Remarks: Unfortunately this was the second snake that was seen run over. Saw many cars driving at high speeds .;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2236885580; Occurrence Remarks: On Soda Lake Road heading towards Hwy 166 in Carrizo Plains National Monument. One of 3 seen that day.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4908287478; Occurrence Remarks: Southern Pacific Rattlesnake, Liebre Mountain;; Coordinate Uncertainty in Meters: 288.00000.

GBIFID: 4908777050; Occurrence Remarks: In shed. Basking in the shade near some rocks.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4908508552; Occurrence Remarks: Valencia Peak Trail, Montana de Oro State Park, Los Osos, CA. Good-sized snake, was rattling loudly for several minutes.;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.273217, -120.891388: : 7/14/2024: kingfisherfreedom: 14 Jul 2024 :

GBIFID: 4909024847; Occurrence Remarks: shed skin;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2237510732; Occurrence Remarks: Nearly got run over...;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4924149880; Occurrence Remarks: Not sure what was the cause of death was as there were no wounds or evidence of road kill. Found just like this near the side of a dirt road. Freshly dead still limp no rigamortus yet. No spotting or patterns other than being slightly darker near the base of the tail below the rattle. Not sure what the species is.;; Coordinate Uncertainty in Meters: 34.00000.

San Luis Obispo, California: 35.26823, -120.877512: : 8/1/2024: Allyssa Anthony: 1 Aug 2024 :

GBIFID: 4923800348; Occurrence Remarks: This was Olive, one of the Sedgwick rattlesnakes that was accustomed to people and was not aggressive, but found dead with some apparent head trauma.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4926368883; Occurrence Remarks: We got buttons!;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4936216512; Occurrence Remarks: Photo by Maureen;; Coordinate Uncertainty in Meters: 1063.00000.

GBIFID: 4953125121; Occurrence Remarks: Probably ~18ΓÇ¥ long;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2242872030; Occurrence Remarks: DOR juvenile.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2242893932; Occurrence Remarks: Rattlesnake found run over on dirt road in Carrizo Plain area ≡ƒÿ⌐;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1227758613; Occurrence Remarks: Lying in the dirt road. Couldnt be arsed to move at all. Gave the laziest, briefest half-rattle when we drove around it.;; Coordinate Uncertainty in Meters: 8776.00000.

GBIFID: 4978553397; Occurrence Remarks: Approximately 8 inch (20 cm)-long juvenile. Pismo Preserve, Pismo Beach, CA.;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 5063753013; Occurrence Remarks: Likely the same individual from 01/13/25. It was under the same herp board, sitting in the same spot.;; Coordinate Uncertainty in Meters: 105.00000.

GBIFID: 2251978548; Occurrence Remarks: Sandspit trail in Montana de Oro;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 5087436227; Occurrence Remarks: Seen in the grass near a coverboard (photo 5).;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5087637049; Occurrence Remarks: As we approached Coldwater Camp, Will raced ahead to climb up a familiar tree, but luckily first spotted this little guy right in his path. After getting a good look we moved it a couple hundred yards away from our campsite. Years ago a user of Flickr commented on this image: Nice little Northern Pacific Rattlesnake! Thats an ambush posture. Through scent it has determined that the section right in front of its face is a lizard or rodent path and it is set up patiently waiting for dinner. Later on this trip we did indeed see lizards moving on this trunk, which was at about a 45 degree angle.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 5104484832; Occurrence Remarks: Basking near a boulder pile. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104399829; Occurrence Remarks: Found under a rock. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104464976; Occurrence Remarks: I flipped the tin only to notice this snake a few feet away just afterwards. Was basking half out from under the tin. Was very calm and stayed put for the most part while being watched. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104462810; Occurrence Remarks: Huge male, found under a metal sheet. Was very grumpy, and formed a defensive coil, puffed up, and rattled. First photo is as found. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104438841; Occurrence Remarks: Male, found under a metal sheet. Rattled a lot. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104456820; Occurrence Remarks: Appeared to have eaten a large meal recently. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5104482881; Occurrence Remarks: First photo is as found. Private property accessed with permission from the landowner.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134071087; Occurrence Remarks: Found under a coverboard.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5133948242; Occurrence Remarks: Found under a coverboard. Was warmed up and struck out before rattling.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134910464; Occurrence Remarks: Found under a metal sheet. Was very cold, but able to rattle.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134834100; Occurrence Remarks: Found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134848351; Occurrence Remarks: Found under a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134874389; Occurrence Remarks: Found resting under the overhang of a rock (photos 1-2 are as found).;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134775330; Occurrence Remarks: Found resting between the grass and a rock in the shade (photos 2-3 are as found). Was very defensive and quick to move.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134913513; Occurrence Remarks: Very light individual, 4 of at least 8 seen in this area. Was in a crevice on the shaded side of a boulder. I moved this snake out of the crevice to get a photo (the only one of the 8 that I moved from its location as found), but it got away and escaped into a different crevice, a few feet from where I found it. I came back an hour later to check on it and it had returned to the same crevice as before. Snakes are not dumb. They know their surroundings well and they know what they like and where they want to be.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134881776; Occurrence Remarks: Individual 7 of at least 8 seen at this rocky outcrop. Was climbing a boulder when I first saw it, but it started rattle when it saw me and crawled down to the ground.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134771525; Occurrence Remarks: Pair, with male doing head twitches on the female. Individuals 5 and 6 of at least 8 seen at this rocky outcrop. I checked up on them 1.5 hours later, and they were still in the same square meter, although they had moved a little.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134646781; Occurrence Remarks: 1 of at least 8 seen at this rock outcrop. Was moving through a bush and under a rock when spotted (image 1). Then, I went to go see another snake that my friend Wyatt found on top of the nearby rock outcrop. While looking after 3 minutes looking at that second snake, I noticed this one had moved into the open just a few feet from where I first saw it (photo 2). I immediately when back down to go see it again, and it was then moving back into the same rock as before (photo 3). So interesting to see it moving around a lot.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134874428; Occurrence Remarks: Was out on the crawl. Very warmed up, rattled a lot, and slithered into the thick bushes to stay out of reach.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134885618; Occurrence Remarks: On the move. Likely the same individual as (), since it had the same coloration and was just a few yards away from where I saw it 1.5 hours earlier.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134871610; Occurrence Remarks: We heard the unmistakable rattle of a rattlesnake in the grass and saw that it was a mating pair copulating. Unfortunately, in a matter of seconds, the female freaked out too much due to our presence and it disconnected from the male. You can see the males tail and one of the hemipenes in the photos. We left them immediately after the photos were taken to avoid disturbing them any further.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5133244319; Occurrence Remarks: Called for relocation. The location of the observation is the capture location, not the release site.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5133591755; Occurrence Remarks: Found at the upper elevation of the Tejon Ranch (roughly 6,000).;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 5133789877; Occurrence Remarks: Male and female, found under a coverboard with a Striped Racer and 2 gophersnakes. Found on a cool cloudy day. Coolest flip I have ever experienced!;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134623941; Occurrence Remarks: DOR, on Wind Wolves Preserve;; Coordinate Uncertainty in Meters: 69.00000.

GBIFID: 5134383439; Occurrence Remarks: Found crossing the road.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134838338; Occurrence Remarks: Found basking in the grass. Photos are as found.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134433172; Occurrence Remarks: Found basking stretched out next to a metal barrel that it clearly had been sheltering under the previous night. All photos are as found. Photo 5 is what it looked like 45 minutes later when we checked in on it again. Frost on the ground earlier in the morning.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134610427; Occurrence Remarks: Female, seen basking in the grass. Photos are as found.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134558765; Occurrence Remarks: Male with dark coloration. Fled under a large piece of cover that a female was seen next to 40 minutes later.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134710980; Occurrence Remarks: Large male. Found out on the crawl near farm equipment.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134734982; Occurrence Remarks: Found under a metal sheet. Appeared to have eaten a meal recently.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134674097; Occurrence Remarks: Female, basking near a large piece of cover that a dark male went into about 40 minutes earlier.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134682040; Occurrence Remarks: Young female. Found under a piece of metal. Moved to a nearby rock outcrop, since it was very close to a ranch property.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134715927; Occurrence Remarks: Large male. Was basking right next to a metal sheet.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134718274; Occurrence Remarks: Seen resting mostly inside a burrow, with one coil sticking out.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134582175; Occurrence Remarks: Seen resting in the shade of a thick bush.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 5134722400; Occurrence Remarks: I was driving with the windows down and heard the rattle of this huge male rattlesnake as I drove by it. Apparently, it was just out of the roadway (why I didnt see it) and the car spooked it. Very light coloration and not what I was expecting for the Caliente Mountains.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5134840525; Occurrence Remarks: just off trail across from eucalyptus, underneath black sage;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 2273247072; Occurrence Remarks: I seem to only take pictures of rattlesnakes that I see eat work nowadays.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 2273251852; Occurrence Remarks: Cooler, breezy day;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5140838247; Occurrence Remarks: Found dead with head in a rodent hole. Believe a nesting raven beaked him to death and the injured snake died while trying to get down a hole. Tho, a mystery how the snake died.;; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.2686, -120.715682: : 5/8/2025: Ginger Langdon-Lassagne: 8 May 2025 :

San Luis Obispo, California: 35.331903, -120.72869: : 7/5/2019: San Luis Obispo Botanical Garden: 5 Jul 2019 :
GBIFID: 2283172687; Occurrence Remarks: Looked like the end of the tail was bit off;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168244802; Occurrence Remarks: Most likely C. oreganus based on location and coloration. Band pattern suggests C. helleri, and location is right on the southern edge of SJV C. oreganus.;; Coordinate Uncertainty in Meters: 31.00000.

San Luis Obispo, California: 35.27457, -120.887863: : 6/2/2025: Shawn McMahan, CA ERC: 2 Jun 2025 :

GBIFID: 3079646651; Occurrence Remarks: Removed from campground by staff.;; Coordinate Uncertainty in Meters: 5.00000.

Kern, California: 35.270883, -118.662443: : 3/28/2026: Henry Fabian: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 5206356323; Occurrence Remarks: Called for relocation.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 2294621585; Occurrence Remarks: Juvenile about 1 foot long. Near top of Valencia Peak, Montana de Oro State Park, Los Osos, CA;; Coordinate Uncertainty in Meters: 162.00000.

San Luis Obispo, California: 35.295279, -120.85964: : 7/4/2025: Murwood Keyspot: 4 Jul 2025 :

GBIFID: 891163767; Occurrence Remarks: Really cool rattlers. Found while hiking. It was like a pit of them. Two laying outside the hole, in the back is a bunch of babys and adults.;; Coordinate Uncertainty in Meters: 5057.00000.

GBIFID: 5230069385; Occurrence Remarks: Several rattlesnakes clumped together in a den;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 2331894330; Occurrence Remarks: Nearly stepped on this snake. In middle of trail under eucalyptus trees in the shade. Did not try to strike. Coerced snake to move off of trail with a stick...never showed aggression.;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.029354, -119.546356: : 5/6/2018: naturephotosuze: 6 May 2018 :

GBIFID: 2366138756; Occurrence Remarks: three photos are stills from an iPhone video. Last is a film photograph of the same specimen.;; Coordinate Uncertainty in Meters: 673.00000.

GBIFID: 1269564481; Occurrence Remarks: One of a pair that were copulating at the edge of this brush pile. The other had moved deeper into the brush pile and was pulling this one in with it.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1272103184; Occurrence Remarks: Saw 2 males. Both part of cal poly research;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070296682; Occurrence Remarks: Someone drove over this beauty.;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.189287, -119.888572: : 7/7/2016: Alyssa Semerdjian: 7 Jul 2016 :

San Luis Obispo, California: 35.247288, -119.943755: : 7/6/2016: Alyssa Semerdjian: 6 Jul 2016 :

GBIFID: 1291132820; Occurrence Remarks: Color coding on rattle applied by researchers from Cal Poly San Luis Obispo;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4039236338; Occurrence Remarks: Hidden in Ehrharta;; Coordinate Uncertainty in Meters: 45.00000.

San Luis Obispo, California: 35.268342, -119.928339: : 4/3/2018: naturephotosuze: 3 Apr 2018 :

GBIFID: 891734556; Occurrence Remarks: Along trail where several drains pass beneath it.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891734805; Occurrence Remarks: Food bulge, vole sized;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891736579; Occurrence Remarks: Recapture - BGB rattle paint;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891736597; Occurrence Remarks: Painted rattle can be seen in photo;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891737345; Occurrence Remarks: RRR;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 891737358; Occurrence Remarks: BRR;; Coordinate Uncertainty in Meters: 11100.00000.

GBIFID: 891737320; Occurrence Remarks: BRG;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2576379050; Occurrence Remarks: Found crossing the road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2576473231; Occurrence Remarks: Two different snakes found one foot away from one another. The first picture was the very large one, second picture was much smaller. Looked too old to be maternal/offspring pair but too young for mating pair.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 2579332953; Occurrence Remarks: The snake was approx. 50ΓÇ¥ in length. Note the ground squirrel in the burrow entrance.;; Coordinate Uncertainty in Meters: 28762.00000.

GBIFID: 891739965; Occurrence Remarks: BGR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891739989; Occurrence Remarks: BGR;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 910491601; Occurrence Remarks: under drain outlet;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 891739943; Occurrence Remarks: BRR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2850936480; Occurrence Remarks: Baby, maybe 12-15 inches long, hanging out in the road before he disappeared under a very small and low plant. Stay on the trails!;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4935956189; Occurrence Remarks: Carrizo Plain Maybe offspring of the large adult? Maybe 18-24 inches long so not super young;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4936260221; Occurrence Remarks: Carrizo Plain A very large well fed adult;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 891750706; Occurrence Remarks: BRR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2609118514; Occurrence Remarks: 10 segments on rattle. Sorry it blends in with sage brush branches.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 891751423; Occurrence Remarks: Young if the year?;; Coordinate Uncertainty in Meters: 1110.00000.

GBIFID: 891751447; Occurrence Remarks: RBR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891751402; Occurrence Remarks: red/blue/red. right where it was caught and tagged earlier;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 891753124; Occurrence Remarks: BRG;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2611337365; Occurrence Remarks: Submitted by Kate Bunnell;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2999061383; Occurrence Remarks: Both photos made around 5:00pm. First photo (on pavement) taken on Soda Lake Road about a quarter mile south of the northern entrance to the CPNM. The second photo (dirt) made a few minutes earlier, was on Garvey in the CA Valley Subdivision. IΓÇÖm not sure exactly what species, but have assumed viridus for years. I have seen 5 so far this year including one at the house.;; Coordinate Uncertainty in Meters: 189.00000.

San Luis Obispo, California: 35.278576, -120.634035: : 4/30/2020: wannabmountaineer: 30 Apr 2020 :

GBIFID: 891758310; Occurrence Remarks: RYY;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891762660; Occurrence Remarks: RYY;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2626610820; Occurrence Remarks: Rattlesnakes copulating at the Goodwin Ranch, Carrizo Plain National Monument.;; Coordinate Uncertainty in Meters: 454.00000.

GBIFID: 891767768; Occurrence Remarks: BBY;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2633952787; Occurrence Remarks: A remarkably calm rattler. Moved it off a road and it didnΓÇÖt rattle once, just coiled over its own head and made a ball;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891773245; Occurrence Remarks: BYY;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453510290; Occurrence Remarks: A nice particularly green individual;; Coordinate Uncertainty in Meters: 8303.00000.

GBIFID: 1453523154; Occurrence Remarks: Found at 11:15 AM in a decomposed granite, outcrop. Temperature was about 65F.;; Coordinate Uncertainty in Meters: 28790.00000.

San Luis Obispo, California: 35.189864, -119.863297: : 3/26/2016: Clare Marter Kenyon: 26 Mar 2016 :
GBIFID: 1455592152; Occurrence Remarks: Victim of a vehicle.. injured and unable to move forward - thrashing about...;; Coordinate Uncertainty in Meters: 185.00000.

San Luis Obispo, California: 35.189864, -119.863297: : 3/26/2016: Clare Marter Kenyon: 26 Mar 2016 :
GBIFID: 1455592185; Occurrence Remarks: Rattlesnake #2 hit by a vehicle - deceased.;; Coordinate Uncertainty in Meters: 185.00000.

GBIFID: 899954272; Occurrence Remarks: Recapture;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899954958; Occurrence Remarks: First female with transmitter;; Coordinate Uncertainty in Meters: 11.10000.

Santa Barbara, California: 34.74013, -120.025689: : 4/21/2017: Andy Kleinhesselink: 21 Apr 2017 :

GBIFID: 899963897; Occurrence Remarks: BBG sunny and hot.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899963905; Occurrence Remarks: Tight coil;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899964530; Occurrence Remarks: Wind Wolves Nature Preserve;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899965407; Occurrence Remarks: Snake 9;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899965423; Occurrence Remarks: Up on dune and in bush.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899966787; Occurrence Remarks: Not coiled in bush;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899967241; Occurrence Remarks: Small female on left side if trail just past fork.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 899967198; Occurrence Remarks: First capture. Along trail on north side of ravine;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899967206; Occurrence Remarks: Recap. Just south of where old logs used to be;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899967229; Occurrence Remarks: Injury about a third down her body. No rattle.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3044768303; Occurrence Remarks: Juvenile rattlesnake found on the side of the road on a sunny 70 degree day. It appeared to have a rattle but made no noise-- just tongue flicked. It was moved off the road using a lizard pole because there were approaching trucks.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 899971987; Occurrence Remarks: Small female found under fallen tree. Acted very calm and hardly rattled;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899973121; Occurrence Remarks: Tight coil under bush. Photo of bush included;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899973120; Occurrence Remarks: 100% in sun. 5-10 mph winds. 13.8 c;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899973134; Occurrence Remarks: Loose coil and exposed. 5-8 mph winds and 14c.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899973189; Occurrence Remarks: About to cross trail at trailhead;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899973182; Occurrence Remarks: Small male.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 910492714; Occurrence Remarks: Found it in an old log. It is a female. Can tell because the distance between the cloaca and rattle is short. Did not rattle when we took it out. But we got it to rattle when it was put in the tube. She felt cold and was very skinny.;; Coordinate Uncertainty in Meters: 949.00000.

GBIFID: 899973549; Occurrence Remarks: Rattlesnake found in a bush. It was a female and was short in length. It was pit tagged.;; Coordinate Uncertainty in Meters: 6175.00000.

San Luis Obispo, California: 35.11675, -119.92547: : 5/30/2017: Alyssa Semerdjian: 30 May 2017 :

GBIFID: 899977266; Occurrence Remarks: under cover of 8 plastic pipes;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2992717136; Occurrence Remarks: Carrizo Plains. Seen at night, coiled at the threshold of an old, abandoned wooden shed. Luckily, we didnt step in unannounced.;; Coordinate Uncertainty in Meters: 28734.00000.

GBIFID: 910496555; Occurrence Remarks: Found in coastal dune scrub at bluff trailhead, montana de oro state park. Female with distended stomach;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572381994; Occurrence Remarks: Found under sheet metal in invasive annual grassland.;; Coordinate Uncertainty in Meters: 108.00000.

GBIFID: 3058770044; Occurrence Remarks: It objected to our presence on its mountainside... we gave it a wide space.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 911499584; Occurrence Remarks: Found underneath chaparral yucca plants on serpentine substrate in the shade next to poly canyon road, cal poly campus;; Coordinate Uncertainty in Meters: 600.00000.

GBIFID: 1847636658; Occurrence Remarks: Pic is of wood rat den he was found on;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 911503614; Occurrence Remarks: It was a very windy but sunny day. A Female Northern Pacific Rattlesnake was Found underneath a low growing shrub. The female was captured and data was taken from the individual for a masters project.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 3079878504; Occurrence Remarks: North of the Grapevine;; Coordinate Uncertainty in Meters: 28762.00000.

GBIFID: 923914893; Occurrence Remarks: In valley of flat grassland with rocky outcrops.;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 3090876698; Occurrence Remarks: Under wood at overlook parking area.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3097007232; Occurrence Remarks: chauffeured this bugger across the road;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3097194430; Occurrence Remarks: Neonate. Deceased on mountain bike path.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 923925663; Occurrence Remarks: Last years litter;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 923925682; Occurrence Remarks: Last years litter;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4935768670; Occurrence Remarks: Klipstein Canyon Road;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3113494570; Occurrence Remarks: This beautiful Southern Pacific was about to be shot as it sat beside a small pool of water when I asked if I can relocate it instead. They said yes.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3302553034; Occurrence Remarks: unsure whether itΓÇÖs a northern pacific rattlesnake or western rattlesnake;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 1847639773; Occurrence Remarks: Cannot be seen in photo;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1847639770; Occurrence Remarks: GGP with her. Male snake. Neither can be seen in picture.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1024206293; Occurrence Remarks: Unhealthy patches if skin;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3307120831; Occurrence Remarks: Another release away from humans. Big and docile.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 3314444095; Occurrence Remarks: Looks like this little guy had recently had a good sized meal.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 1024215140; Occurrence Remarks: It looks like someone cut the rattle off before I got there;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3325897499; Occurrence Remarks: Fighting males observed while photographing a nearby female that was scared off the trail by some horses. The victor came closer searching for the girl, the loser left in a hurry and was not seen again.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3327775941; Occurrence Remarks: Sitting on road near Tehachapi Mountain Park. Partly cloudy evening in the 80ΓÇÖs F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3355785433; Occurrence Remarks: First ever rattler Ive found in Morro Bay. Moved it away from people into some nicer habitat.;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.270263, -120.893993: : 9/9/2021: westernspecific: 9 Sep 2021 :

San Luis Obispo, California: 35.27332, -120.89177: : 9/9/2021: westernspecific: 9 Sep 2021 :

San Luis Obispo, California: 35.27232, -120.889375: : 9/9/2021: westernspecific: 9 Sep 2021 :

GBIFID: 3384254858; Occurrence Remarks: Photo sent to me by a friend.;; Coordinate Uncertainty in Meters: 28706.00000.

San Luis Obispo, California: 35.241387, -119.909042: : 3/15/2026: corvidlover15: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.121811, -119.852692: : 3/15/2026: laurafalk: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Santa Barbara, California: 34.69322, -120.042903: : 8/24/2025: Douglas J. Long: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 17.00000.

Los Angeles, California: 34.701277, -118.524673: : 7/10/2026: Jakob Ingle: 10 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Barbara, California: 34.693199, -120.042854: : 8/28/2025: Douglas J. Long: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Just a little guy

Kern, California: 35.124608, -118.571822: : 7/13/2026: olleander-schwag: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Luis Obispo, California: 35.151525, -120.653092: : 4/1/2026: bonsaimat: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 116.00000.

San Luis Obispo, California: 35.095849, -119.691331: : 4/2/2026: alysestuck: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 10658.00000.

Santa Barbara, California: 34.859138, -120.53892: : 9/2/2025: Cait: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Kern, California: 35.266643, -119.709534: : 5/28/2026: nicklausgirz: 28 May 2026 ; Coordinate Uncertainty in Meters: 142634.00000.

GBIFID: 3892439280; Occurrence Remarks: Glad my 80 year old Mom was with me to witness this beautiful Norpac with faint pattern and beautiful red tones on edge of roadway at 88F with a few large clouds blocking the sun for about half an hour during observation.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3764178693; Occurrence Remarks: Very young rattlesnake spotted basking in a nook on coastal bluffs. Rattle not fully developed, roughly 12 inches in size.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3759322208; Occurrence Remarks: Apparently post-feeding. Second picture taken after capture and prior to relocation.;; Coordinate Uncertainty in Meters: 20.00000.

San Luis Obispo, California: 35.574813, -120.912362: : 8/7/2025: kellyalycemcdonald: 7 Aug 2025 :

Kern, California: 35.718947, -119.697312: : 3/17/2026: Nicolas Vinas: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Occurrence Remarks: Gravid female (5 pups) Total length: 31 3/4ΓÇ¥ (inc. rattle) SVL: 28 3/4ΓÇ¥ Weight: 428g Tissue sample collected for CDFW; Coordinate Uncertainty in Meters: 28677.00000.

San Luis Obispo, California: 35.416636, -120.215964: : 10/15/2025: Annie Zell: 15 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Tulare, California: 36.364708, -118.830453: : 9/28/2025: John Dumbacher: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Coconino, Arizona: 36.059731, -112.14373: : 10/12/2025: jengea: 12 Oct 2025 ; Coordinate Uncertainty in Meters: 19.00000.

Tulare, California: 36.430836, -118.747003: : 8/28/2025: Cayman Lanzone: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Tulare, California: 36.002543, -118.858785: : 11/25/2025: Rosanna Reed: 25 Nov 2025 ; Coordinate Uncertainty in Meters: 79.00000.

Monterey, California: 36.281205, -121.853058: : 7/24/2026: Chuck Wilson: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4171251570; Occurrence Remarks: Found deceased, indeterminate cause of death;; Coordinate Uncertainty in Meters: 28563.00000.

GBIFID: 4096746759; Occurrence Remarks: 3 snakes seen in the canyon despite our best attempts to avoid them..;; Coordinate Uncertainty in Meters: 112.00000.

GBIFID: 3873151323; Occurrence Remarks: Previously classified as crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 173.00000.

Tulare, California: 36.448103, -118.863808: : 3/29/2026: Amelia Ryan: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Monterey, California: 36.272172, -121.836705: : 5/30/2026: Aleesha Sadiq: 30 May 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Monterey, California: 36.272187, -121.836691: : 5/29/2026: Aleesha Sadiq: 29 May 2026 ; Coordinate Uncertainty in Meters: 37.00000.

San Benito, California: 36.477636, -121.226048: : 5/17/2026: mammaquail: 17 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Kern, California: 35.756618, -117.859682: : 4/18/2026: Venkat Sankar: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: He was found by our garage. My husband put him in this bucket to show him to me, then moved him to a spot farther from our house.; Coordinate Uncertainty in Meters: 6.00000.

San Luis Obispo, California: 35.755169, -120.560692: : 4/15/2026: tkgoggin: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Tulare, California: 36.155597, -118.802758: : 4/17/2026: Brendan Black: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Kern, California: 35.696962, -119.698393: : 4/17/2026: Alexander Gregory Mason: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.478075, -121.184005: : 4/6/2026: kboland: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Kern, California: 35.452555, -118.906587: : 4/18/2026: owenthebug: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.488081, -118.86517: : 4/18/2026: brycethebug: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 19272.00000.

Kern, California: 35.483158, -118.875992: : 4/18/2026: owenthebug: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 29.00000.

Kern, California: 35.513313, -118.901038: : 4/18/2026: owenthebug: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Monterey, California: 36.384017, -121.555803: : 4/19/2026: Chris Grinter: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Found dead in a stream; Coordinate Uncertainty in Meters: 0.11000.

Kern, California: 35.64609, -119.787519: : 4/20/2026: Alexander Gregory Mason: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.61399, -119.668941: : 4/20/2026: Alexander Gregory Mason: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Monterey, California: 36.195422, -121.223092: : 3/17/2026: orienteering: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Monterey, California: 36.339574, -121.517178: : 4/18/2026: Oonagh Degenhardt: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28563.00000.

Monterey, California: 36.599247, -121.738146: : 4/9/2026: riekens211: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Tulare, California: 36.211413, -118.801063: : 3/17/2026: sweiser: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.624159, -117.957175: : 4/18/2026: Richard Hasegawa: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Monterey, California: 36.551581, -121.632794: : 4/24/2026: luther_catherine: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 28534.00000.

Occurrence Remarks: Relocated ~200 from parking area; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.488665, -121.147408: : 4/19/2026: its_sara: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 205.00000.

Tulare, California: 36.467145, -118.912217: : 5/21/2026: hunter3ross: 21 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Tulare, California: 36.32512, -119.04148: : 5/21/2026: MadisonMc: 21 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.287078, -121.843292: : 5/20/2026: Steve Rovell: 20 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Benito, California: 36.492678, -121.210137: : 5/17/2026: Mathieu Sourice: 17 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Coconino, Arizona: 36.153661, -112.055114: : 5/16/2026: alexnuckols: 16 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Benito, California: 36.491712, -121.17115: : 5/22/2026: Sienna Carrillo: 22 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.436858, -120.714559: : 5/22/2026: tkgoggin: 22 May 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

Monterey, California: 36.013261, -121.502342: : 4/3/2026: Richard Mallen: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Benito, California: 36.499375, -121.201868: : 5/23/2026: danielgearhart540: 23 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Coconino, Arizona: 36.332121, -112.350571: : 5/13/2026: elynch: 13 May 2026 ; Coordinate Uncertainty in Meters: 31.00000.

San Benito, California: 36.486973, -121.169623: : 5/25/2026: otes: 25 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Tulare, California: 36.432447, -118.676306: : 5/22/2026: ayushpatel21: 22 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Coconino, Arizona: 36.384611, -112.414255: : 5/4/2026: elynch: 4 May 2026 ; Coordinate Uncertainty in Meters: 1131.00000.

Coconino, Arizona: 36.392402, -112.42775: : 5/4/2026: elynch: 4 May 2026 ; Coordinate Uncertainty in Meters: 309.00000.

Tulare, California: 36.351028, -118.405822: : 5/25/2026: Wade Olsson: 25 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.655937, -118.765891: : 4/19/2026: california_every_reptile: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.440394, -118.618764: : 4/19/2026: california_every_reptile: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

Kern, California: 35.425361, -118.662281: : 4/19/2026: california_every_reptile: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

Tulare, California: 36.454984, -118.907443: : 5/31/2026: Dan Killam: 31 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4046473878; Occurrence Remarks: in situ;; Coordinate Uncertainty in Meters: 2552.00000.

GBIFID: 4130119493; Occurrence Remarks: DOR :(;; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.45525, -121.920747: : 10/28/2025: ivissey: 28 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 35.970899, -121.05384: : 5/21/2023: Chloe and Trevor Van Loon: 21 May 2023 :

GBIFID: 3860228463; Occurrence Remarks: A Grand Canyon Pink.;; Coordinate Uncertainty in Meters: 2.00000.

San Benito, California: 36.47723, -121.18553: : 5/17/2025: fruitbee: 17 May 2025 ; Coordinate Uncertainty in Meters: 12.00000.

Monterey, California: 36.45987, -121.905053: : 2/26/2026: servatis16: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.697221, -119.684607: : 2/28/2026: Alexander Gregory Mason: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.483412, -121.18412: : 3/1/2026: natcourtneyy: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Tulare, California: 36.461947, -118.889962: : 3/3/2026: phardwick: 3 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Benito, California: 36.478775, -121.223969: : 3/3/2026: cahiker: 3 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Luis Obispo, California: 35.460983, -120.331812: : 3/7/2026: LJ Moore-McClelland: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Tulare, California: 36.135056, -118.813688: : 3/8/2026: Brendan Black: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 98.00000.

Kern, California: 35.734899, -119.761959: : 3/9/2026: Alexander Gregory Mason: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.761486, -119.654676: : 3/9/2026: Alexander Gregory Mason: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: Off of trail. rattled at me and headed under a shrub, only pictures are like these; Coordinate Uncertainty in Meters: 2.00000.

Kern, California: 35.740798, -119.676313: : 3/10/2026: Alexander Gregory Mason: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: This observation is for the snake in the foreground; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: This observation is for the snake in the background; Coordinate Uncertainty in Meters: 28649.00000.

Tulare, California: 36.109375, -119.002425: : 3/12/2026: Ryan Donnelly: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.249228, -121.687443: : 3/14/2026: vincesayshi: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 80.00000.

Monterey, California: 36.245708, -121.722567: : 3/14/2026: Angus Shen: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 8578.00000.

Monterey, California: 36.281862, -121.85582: : 3/15/2026: Anna Skye Bruce: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.678815, -118.378751: : 3/23/2026: californican: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Monterey, California: 36.599513, -121.674163: : 5/10/2026: sarbear_: 10 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.737953, -119.579881: : 4/25/2026: Bob Steele: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.663533, -118.02285: : 10/15/2025: lkfreidenburg: 15 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Luis Obispo, California: 35.399912, -120.839818: : 4/10/2026: Phoebe Davies: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

Monterey, California: 36.467728, -121.904245: : 4/8/2022: Pat Webster @underwaterpat: 8 Apr 2022 :
GBIFID: 3759439364; Occurrence Remarks: Teenie tiny one;; Coordinate Uncertainty in Meters: 89.00000.

Kern, California: 35.403656, -118.811531: : 4/29/2026: Scott Altmann: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Kern, California: 35.746846, -119.656524: : 5/1/2026: Alexander Gregory Mason: 1 May 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.491425, -121.209312: : 5/1/2026: Audrey R.: 1 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Benito, California: 36.49526, -121.186466: : 5/2/2026: Allyson Seconds: 2 May 2026 ; Coordinate Uncertainty in Meters: 5788.00000.

Tulare, California: 36.214492, -118.76874: : 5/3/2026: sofiamicci: 3 May 2026 ; Coordinate Uncertainty in Meters: 159.00000.

Kern, California: 35.667438, -118.534522: : 5/3/2026: schaeferross82: 3 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Resident rattlesnake; Coordinate Uncertainty in Meters: 0.11000.

Tulare, California: 36.214275, -118.76667: : 5/3/2026: sammiyo: 3 May 2026 ; Coordinate Uncertainty in Meters: 70.00000.

Tulare, California: 36.20147, -118.76172: : 5/1/2026: desertaster: 1 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 2.00000.

Coconino, Arizona: 36.055983, -112.217978: : 5/9/2026: Jack Byrley: 9 May 2026 ; Coordinate Uncertainty in Meters: 228.00000.

Kings, California: 36.05412, -120.074059: : 3/26/2026: Jody Cope: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 28592.00000.

Fresno, California: 36.080395, -120.392877: : 3/27/2026: Jody Cope: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 28592.00000.

Monterey, California: 36.003947, -121.496533: : 1/31/2026: Quinn Shemet: 31 Jan 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.249481, -121.705604: : 2/4/2026: Danny Vallentyne: 4 Feb 2026 ; Coordinate Uncertainty in Meters: 1430.00000.

Kern, California: 35.760105, -119.580788: : 3/28/2026: johnwmyles: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.733597, -119.597862: : 3/28/2026: johnwmyles: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.434981, -118.866983: : 5/2/2026: Richard D Norris: 2 May 2026 ; Coordinate Uncertainty in Meters: 264.00000.

Inyo, California: 35.859158, -117.984178: : 4/19/2026: Morgan Stickrod: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Benito, California: 36.48008, -121.18222: : 3/22/2026: starriels: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Double-rattle?; Coordinate Uncertainty in Meters: 28563.00000.

Occurrence Remarks: WasnΓÇÖt sure if this was a Grand Canyon pink rattlesnake or a Great Basin rattlesnake. My son took this while we camped right next to the Colorado River on a guided rafting trip last week, it was out at night and his phone flash and camera caught it as it cruised by him.; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: Two intermingled rattlesnakes. Observed momentarily then continued hiking.; Coordinate Uncertainty in Meters: 28534.00000.

Coconino, Arizona: 36.023389, -111.960892: : 3/29/2026: Davis Smith: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Kings, California: 35.849348, -119.983316: : 5/10/2026: K Calderala: 10 May 2026 ; Coordinate Uncertainty in Meters: 28620.00000.

San Benito, California: 36.545071, -120.769306: : 5/10/2026: K Calderala: 10 May 2026 ; Coordinate Uncertainty in Meters: 28534.00000.

San Benito, California: 36.496366, -121.203394: : 5/3/2026: Steven Lamonde: 3 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Unfortunately, freshly DOR. I missed it alive by about 2 minutes.; Coordinate Uncertainty in Meters: 244.00000.

San Benito, California: 36.505037, -121.195708: : 5/11/2026: Jackie Anderson Yee: 11 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Benito, California: 36.477709, -121.226018: : 5/17/2026: mammaquail: 17 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Coconino, Arizona: 36.376269, -112.465561: : 5/23/2026: beoschaeffer: 23 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 36.600353, -120.684067: : 3/13/2026: kwat: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Monterey, California: 36.460359, -121.908308: : 3/16/2026: bestrada211l: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 592.00000.

San Benito, California: 36.480563, -121.182005: : 3/16/2026: Solomon Feinstein: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Benito, California: 36.47755, -121.225771: : 3/17/2026: Bilal salim: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

San Benito, California: 36.499544, -121.177435: : 3/15/2026: naness: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 60.00000.

Occurrence Remarks: It was a cool dewy morning and this snake did not move, did not stick out its tongue and did not rattle.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found this poor little rattlesnake dead on trail:/ just moved him off the trail; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: roadkill; Coordinate Uncertainty in Meters: 2.00000.

San Benito, California: 36.485572, -121.203087: : 3/20/2026: Joshua vargas: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 12.00000.

San Luis Obispo, California: 35.737966, -120.789178: : 3/22/2026: lalageogeo: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Tulare, California: 36.154775, -118.803147: : 3/22/2026: Brendan Black: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Observed mortality on unpaved road.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: About 13ΓÇ¥ long, only one button!; Coordinate Uncertainty in Meters: 5.00000.

Tulare, California: 36.366419, -118.806824: : 3/23/2026: lonelysequoia: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 3134.00000.

Tulare, California: 36.369042, -118.806264: : 3/23/2026: lonelysequoia: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 3134.00000.

Occurrence Remarks: CW: road kill; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Mating on a hiking trail; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.39838, -120.740453: : 3/24/2026: tkgoggin: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

Monterey, California: 36.426151, -121.266346: : 3/26/2026: Bilal salim: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 35.890353, -120.94732: : 3/10/2026: shawneegiles: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Tulare, California: 36.468583, -118.867675: : 3/20/2026: Sylvia Haultain: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 27.00000.

Kern, California: 35.776721, -118.078553: : 3/28/2026: slampoud: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Tulare, California: 36.095588, -118.968292: : 3/28/2026: cfabela0: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.250408, -121.746028: : 3/27/2026: Lucas Vincenot: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.376975, -120.664917: : 4/1/2026: skunkchunk101: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Monterey, California: 36.458155, -121.914315: : 4/3/2026: Sheldon Logan: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 28.00000.

Occurrence Remarks: Baby rattlesnake sleeping under traffic cone just past West Entrance station≡ƒÑ║; Coordinate Uncertainty in Meters: 0.11000.

San Benito, California: 36.483912, -121.166596: : 3/25/2026: Daniela Durkin: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Monterey, California: 36.544491, -121.654915: : 4/5/2026: bhandbh: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 80.00000.

Kern, California: 35.60222, -119.580208: : 3/12/2026: esmith7: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.176125, -121.626625: : 4/4/2026: Justin Legge: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Benito, California: 36.479497, -121.182883: : 4/8/2026: Erik Lopez: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Kern, California: 35.681428, -118.494542: : 4/9/2026: slampoud: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 3337.00000.

San Benito, California: 36.503067, -121.200856: : 4/7/2026: mirts: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Benito, California: 36.490342, -121.173549: : 4/5/2026: jemills23: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 4097.00000.

Kern, California: 35.707588, -118.302681: : 3/30/2026: onekindofmilk: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 94.00000.

Kern, California: 35.707425, -119.630101: : 6/1/2026: Alexander Gregory Mason: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: Found during debris cleanup, not surface active.; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.519587, -120.75249: : 6/2/2025: Kat Calderala: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 28534.00000.

San Benito, California: 36.49215, -121.171325: : 6/2/2025: Paul G. Johnson: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 6.00000.

San Luis Obispo, California: 35.570074, -120.755987: : 6/3/2026: chezjon: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Kern, California: 35.679223, -118.364725: : 7/6/2026: tucker_stonecypher: 6 Jul 2026 ; Coordinate Uncertainty in Meters: 270.00000.

San Luis Obispo, California: 35.478199, -120.625984: : 6/4/2026: Lawrence Alberti: 4 Jun 2026

Kern, California: 35.732117, -119.722512: : 6/5/2026: Nicolas Vinas: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.386754, -121.549835: : 6/6/2026: Dallas Levey: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Tulare, California: 35.960489, -118.049743: : 6/7/2026: Nicholas Procopio: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 28620.00000.

Kern, California: 35.785912, -119.724982: : 6/9/2026: Alexander Gregory Mason: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.49485, -121.145789: : 6/9/2026: Sienna Carrillo: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Kern, California: 35.619775, -119.041375: : 6/9/2026: owenthebug: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.149175, -121.424667: : 6/11/2026: Fred Watson: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Kern, California: 35.779381, -119.757981: : 6/12/2026: Alexander Gregory Mason: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.727464, -118.168794: : 6/11/2026: Morgan Stickrod: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kings, California: 35.797202, -119.642507: : 6/16/2026: Alexander Gregory Mason: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.7814, -118.44027: : 6/17/2026: Emmett: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.283405, -121.848945: : 6/19/2026: rachlglovr: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Monterey, California: 36.283433, -121.848862: : 6/19/2026: juniperfern: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Tulare, California: 36.487928, -118.830863: : 6/20/2026: Graham Montgomery: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Kern, California: 35.533072, -118.51203: : 7/12/2026: Brooke: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Carcass found under long standing material; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: Shed and broken rattle. No bones.; Coordinate Uncertainty in Meters: 28649.00000.

Kern, California: 35.675521, -119.732467: : 7/14/2026: K Calderala: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

San Benito, California: 36.480607, -121.182006: : 3/16/2026: naness: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Observed on the Bright Angel Trail, approx. 1 mile from the rim trailhead; Coordinate Uncertainty in Meters: 19.00000.

Occurrence Remarks: Observed snake at temperature of 48 degrees and rainy. Snake was presumably drinking rainwater.; Coordinate Uncertainty in Meters: 29.00000.

Kern, California: 35.461506, -118.915489: : 4/18/2026: brycethebug: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 3395.00000.

San Benito, California: 36.477067, -121.185272: : 10/7/2025: chopps34: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Tulare, California: 36.291378, -118.71772: : 9/21/2025: Brendan Black: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Benito, California: 36.368033, -120.885261: : 5/17/2025: Alexander Wentworth: 17 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3415592387; Occurrence Remarks: juvenile, small black band below rattles, uncertain if the widespread and common C. atrox or possibly C. viridis?;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3415448068; Occurrence Remarks: Two snakes huddled together, the larger one behind with tongue out in this picture. Only the larger one rattled at me.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 3456409090; Occurrence Remarks: on road. Stopped to move safely off the road with snake tongs.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1837749104; Occurrence Remarks: Laying out in Arroyo Seco Road in Arroyo Seco Canyon.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3759756350; Occurrence Remarks: Couldnt get very close to get a great shot but, well, its a rattlesnake after all.;; Coordinate Uncertainty in Meters: 11587.00000.

GBIFID: 891092557; Occurrence Remarks: Just past Trail of 100 Giants/Redwood Meadow Campground. Slithering rather slowly and awkwardly. Not sure if it was having trouble getting purchase on the road, if it was trying to keep on eye on me and escape at the same time, or if rattlesnakes are naturally kinda dopey (hadnt seen one actually moving before, usually they just sit).;; Coordinate Uncertainty in Meters: 302.00000.

Monterey, California: 36.497471, -121.829047: : 4/5/2022: wannabenaturalisteevee: 5 Apr 2022 :

GBIFID: 3759434602; Occurrence Remarks: Young snake. Only a bit over a foot long, maybe 16 inches.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1839270276; Occurrence Remarks: Northern Pacific Rattlesnake;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 3773540115; Occurrence Remarks: Dead :(. I moved it off the middle of a dirt road.;; Coordinate Uncertainty in Meters: 40.00000.

San Benito, California: 36.502778, -121.181389: : 5/2/2022: Pinnacles National Park: 2 May 2022 :
GBIFID: 3773791609; Occurrence Remarks: Photo credit Amelia Ryan;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3773122535; Occurrence Remarks: Saw this big rattlesnake right after it killed the ground squirrel!;; Coordinate Uncertainty in Meters: 28534.00000.

GBIFID: 3773542635; Occurrence Remarks: Unfortunately the exact location is unknown;; Coordinate Uncertainty in Meters: 192.00000.

GBIFID: 3773144467; Occurrence Remarks: Location of *Crotalus*. Will upload photos from camera later today!;; Coordinate Uncertainty in Meters: 28534.00000.

GBIFID: 3784635772; Occurrence Remarks: Heard it before I saw it - rattled extremely loudly and I about fell off the trail. Wish I had better photos than this video still;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3785014971; Occurrence Remarks: Under metal coverboard;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 3858595802; Occurrence Remarks: Dead;; Coordinate Uncertainty in Meters: 6.00000.

San Benito, California: 36.486012, -121.201073: : 4/14/2018: Nico Esteban Vega Ramirez: 14 Apr 2018 :

GBIFID: 3881338921; Occurrence Remarks: Reported and photographed by Katie Drexhage;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 1847612872; Occurrence Remarks: On Bear Gulch Trail while escorting lots of students.;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 3881369875; Occurrence Remarks: DOR. Head crushed to a goo.;; Coordinate Uncertainty in Meters: 28592.00000.

GBIFID: 3881639383; Occurrence Remarks: Andrew Molera SP mesa above (east of) Big Sur River mouth;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3881847530; Occurrence Remarks: on Tassajara Road, just south of China Camp, Los Padres NF;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3903006354; Occurrence Remarks: small rattlesnake coiled at edge of trail through rocky section; digitized from slide;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1132401028; Occurrence Remarks: Found in camp at dawn.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3925114038; Occurrence Remarks: Saw this dead guy on the side of the road;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3947075824; Occurrence Remarks: A Grand Canyon Pink;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3947678619; Occurrence Remarks: 10/22/22;; Coordinate Uncertainty in Meters: 28592.00000.

San Benito, California: 36.500528, -121.138419: : 7/19/2018: Pinnacles National Park: 19 Jul 2018 :

GBIFID: 4067215880; Occurrence Remarks: Middle Fork of the Kaweah River, Sequoia National Park, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4102718293; Occurrence Remarks: Pinnacles National Park;; Coordinate Uncertainty in Meters: 9457.00000.

GBIFID: 1092907584; Occurrence Remarks: 4ft rattlesnake on Skyline Fire Road in Three Rivers CA;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1901059558; Occurrence Remarks: About 13 rattles;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1913662712; Occurrence Remarks: Definitely rattled at us. The diamonds looked quite distinct.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4127383333; Occurrence Remarks: Watched tail/rattle get clipped by car- it seemed ok.;; Coordinate Uncertainty in Meters: 316.00000.

GBIFID: 4130249396; Occurrence Remarks: Well-camoflagued on a rock ledge beside an apparent resting spot along the PCT..;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4138383319; Occurrence Remarks: Road casualty;; Coordinate Uncertainty in Meters: 74.00000.

GBIFID: 1099971037; Occurrence Remarks: We were alerted to the presence of this snake by the loud chirping and agitated behavior of the squirrel.;; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 1920804331; Occurrence Remarks: Nearly stepped on this little guy while I inspecting a den (probably badger). Never rattled or moved but the temperature was around 68 F so IΓÇÖm not surprised it was just hunkering down.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4165522162; Occurrence Remarks: Small, only about a foot long or less - probably young.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4176916019; Occurrence Remarks: small, colorful rattler, only about 1.5 to 2 feet in length (but not measured!) with only a couple of button rattles. Rita Carratello and I found it simply sunning at edge of Carmel Valley Road, and we did not disturb it. Very pretty for Western Rattlesnake;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 4177435425; Occurrence Remarks: Saw this snake in a trail, near manter meadow, along manter creek. Can anyone help me decide whether it is the Mojave rattlesnake or the western diamondback please?;; Coordinate Uncertainty in Meters: 797.00000.

GBIFID: 4506196023; Occurrence Remarks: Predated on trail.;; Coordinate Uncertainty in Meters: 3.00000.

San Benito, California: 36.521488, -121.194625: : 4/26/2023: Pinnacles National Park: 26 Apr 2023 :
GBIFID: 4400131782; Occurrence Remarks: Photo credit: NPS/Paul G. Johnson.;; Coordinate Uncertainty in Meters: 0.11000.

San Benito, California: 36.530918, -121.210545: : 4/26/2023: Pinnacles National Park: 26 Apr 2023 :
GBIFID: 4400100826; Occurrence Remarks: Photo credit: NPS/Paul G. Johnson.;; Coordinate Uncertainty in Meters: 0.11000.

San Benito, California: 36.51692, -121.189842: : 4/26/2023: Pinnacles National Park: 26 Apr 2023 :
GBIFID: 4400283672; Occurrence Remarks: Photo credit: NPS/Paul G. Johnson.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4407413797; Occurrence Remarks: The most aggressive rattler I have ever come across! Usually They run away as I am trying to get a photo, or give a quick shake as they slither off, but this one shook its rattle for 5 minutes and blocked the trail! Would not leave for over 10 minutes, tried rolling rocks to scare it, but would not budge. Eventually had to move it out of the way with a branch because it was trying to strike when we attempted to pass (steep drop off on one side, poison oak on the other couldnΓÇÖt go around). So crazy!;; Coordinate Uncertainty in Meters: 974.00000.

GBIFID: 1948783068; Occurrence Remarks: Northern Pacific subspecies.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4600103048; Occurrence Remarks: I heard rustling in the grass and a rattle rubbing on the vegetation, and I noticed these two snakes in the grass. I believe it was a male (photos 1-3 and 5) being chased by another male (photos 4 and 6) that was seen basking nearby earlier (). They paused when they noticed me, so I left them to minimize my disturbance. I came back a few minutes later and noticed that the two snakes had gone their own directions and were no longer fighting. Such a cool observation.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 4600046039; Occurrence Remarks: Long Canyon - East Carmel Valley Road, Monterey County, California;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 4852862271; Occurrence Remarks: very agitated two-footer near edge of trail; didnt get rattles in the photos but I recorded the sound on my iPhone;; Coordinate Uncertainty in Meters: 148.00000.

GBIFID: 4851836374; Occurrence Remarks: DOR:ΓÇÖ(;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4852404148; Occurrence Remarks: Found crossing road;; Coordinate Uncertainty in Meters: 28534.00000.

GBIFID: 4855026140; Occurrence Remarks: The only subspecies in Kings County.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4863639292; Occurrence Remarks: Biologist on raft trip identified this as a Grand Canyon Rattlesnake;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4875310103; Occurrence Remarks: DOR:ΓÇÖ(;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2235540936; Occurrence Remarks: Definitely a rattlesnake (cant see rattle in picture), but not sure which. Doesnt seem to have much of a pattern, although in Grand Canyon its probably western rattlesnake?;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 4875363823; Occurrence Remarks: Eating a white tailed antelope squirrel;; Coordinate Uncertainty in Meters: 4561.00000.

GBIFID: 4891910364; Occurrence Remarks: Sleeping next to the trail up N Kaibab Is var. abyssus not recognized on iNat?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4900847936; Occurrence Remarks: Jamesburg, Tassajara Road - Los Padres National Forest, Monterey County, California;; Coordinate Uncertainty in Meters: 231.00000.

GBIFID: 4901659020; Occurrence Remarks: it was missing its rattle completely;; Coordinate Uncertainty in Meters: 28649.00000.

GBIFID: 4901311248; Occurrence Remarks: The snake sensed our movement, rattled its tail, and sniffed the air with its tongue.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4903987951; Occurrence Remarks: Photos by my dad found by me;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4908248859; Occurrence Remarks: Additional photos are ChristieÆs.;; Coordinate Uncertainty in Meters: 113.00000.

GBIFID: 4909157336; Occurrence Remarks: Seen crossing the road on a hot night. Temperature was 81 degrees F when this snake was found.;; Coordinate Uncertainty in Meters: 28677.00000.

GBIFID: 4909321466; Occurrence Remarks: Crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 60.00000.

GBIFID: 4907999580; Occurrence Remarks: Found on the road, waited til it safely crossed.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936843883; Occurrence Remarks: Carefully ushered off the road;; Coordinate Uncertainty in Meters: 28534.00000.

GBIFID: 4937213861; Occurrence Remarks: Roadkill.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 4935895721; Occurrence Remarks: Got absolutely no clue what this thing is, panamint norpac hybrid?;; Coordinate Uncertainty in Meters: 65.00000.

San Benito, California: 36.505781, -121.191997: : 3/25/2026: Daniela Durkin: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 46.00000.

GBIFID: 4945753736; Occurrence Remarks: At AirBnB;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4950543590; Occurrence Remarks: Polite snake on Ladybug Trail;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4952574186; Occurrence Remarks: Smaller than the one we have down the driveway, much closer to the house. Calmed down and was relocated safely (for him and us).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4952461910; Occurrence Remarks: Photo Credit: Eden Wynd;; Coordinate Uncertainty in Meters: 28592.00000.

GBIFID: 2242913919; Occurrence Remarks: DOR juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2242920726; Occurrence Remarks: Found during the 2019 Pinnacles NP Bioblitz.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4973798862; Occurrence Remarks: IDd by a ranger as a juvenile rattlesnake.;; Coordinate Uncertainty in Meters: 873.00000.

GBIFID: 4994281558; Occurrence Remarks: Juvenile Grand Canyon rattlesnake with pink coloration observed near Indian Gardens in Grand Canyon during rim to rim hike in summer of 2015;; Coordinate Uncertainty in Meters: 1757.00000.

GBIFID: 2251866194; Occurrence Remarks: A baby! About 8 inches long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5063630884; Occurrence Remarks: One of many seen this day of field trip.;; Coordinate Uncertainty in Meters: 33810.00000.

GBIFID: 2252031525; Occurrence Remarks: In long grass between group campsite and trail. Grand Canyon pink; Crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2252029812; Occurrence Remarks: Grand Canyon pink; Crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2252029559; Occurrence Remarks: Grand Canyon pink; Crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2252038973; Occurrence Remarks: On log next to Church Creek Trail.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2252070016; Occurrence Remarks: Juvenile, about a foot long.;; Coordinate Uncertainty in Meters: 867.00000.

GBIFID: 2252075671; Occurrence Remarks: Big Creek Butterfly Count 19;; Coordinate Uncertainty in Meters: 187.00000.

GBIFID: 1453073642; Occurrence Remarks: Grand Canyon Rattlesnake, Desert View Residence, Grand Canyon National Park, AZ;; Coordinate Uncertainty in Meters: 53.00000.

GBIFID: 5108134810; Occurrence Remarks: Under oak log;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5133834189; Occurrence Remarks: Under oak log;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2265885934; Occurrence Remarks: Relocated off a worksite.;; Coordinate Uncertainty in Meters: 704.00000.

GBIFID: 5134590705; Occurrence Remarks: crossing the trail (i.e., old Indians Road) at midday -- nice rattles! Yet it didnt even once use them ...;; Coordinate Uncertainty in Meters: 59.00000.

GBIFID: 5134459693; Occurrence Remarks: Near the overlook; slinked off into an overhang in a wash as soon as I approached. DidnΓÇÖt rattle at all.;; Coordinate Uncertainty in Meters: 38.00000.

GBIFID: 5134890459; Occurrence Remarks: Male and female, individuals 2 and 3 of at least 8 seen at this rock outcrop. The male was very quick to rattle, while the female was more calm and tended to just sit still. I first saw them in the shade of a bush (male in photo 3, female shown in photos 1-2, with photo 2 being after I had pulled back some branches). After a few minutes of checking other parts of the rock outcrop, I came back to find that they had both gone under a rock right next to the bush (photo 4). Nearly 1.5 hours later, I came back to check on them, and they had moved a few yards away to a crevice where they were basking slightly out of the crevice (photo 5).;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5134684472; Occurrence Remarks: Individual 8 of at least 8 seen at this rocky outcrop. Appeared to be on the move.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5133322446; Occurrence Remarks: C. oreganus x helleri intergrade?;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 1253314648; Occurrence Remarks: Baby rattlesnake. I almost stepped on it while it was basking in the sun on a south facing slope in the trail. ID made using range map on Californiaherps.com. Rattle was too small to warm me it was near. Coordinate Uncertainty in Meters: 68.00000.

GBIFID: 5154246236; Occurrence Remarks: Yearling;; Coordinate Uncertainty in Meters: 5005.00000.

GBIFID: 5154697437; Occurrence Remarks: Warming itself in the warm sun on a trail.;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.544934, -120.397881: : 4/21/2025: california_every_reptile: 21 Apr 2025 :

GBIFID: 2283072533; Occurrence Remarks: At Dry Creek Preserves. This rattlesnake made impressively loud rattling sound to warn us about its existence when we approached it (unknowingly). Once we stopped our steps, it cautiously headed into the high grass off the road while rattling all the way.;; Coordinate Uncertainty in Meters: 153.00000.

GBIFID: 5154533625; Occurrence Remarks: Male, seen basking in the sun at the edge of the bushes next to a coverboard.;; Coordinate Uncertainty in Meters: 28706.00000.

GBIFID: 5153886016; Occurrence Remarks: Found resting on the road just after sundown.;; Coordinate Uncertainty in Meters: 28677.00000.

GBIFID: 5167330160; Occurrence Remarks: Grand Canyon;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 5168470858; Occurrence Remarks: Marble Falls trail ~ 4ft;; Coordinate Uncertainty in Meters: 122.00000.

San Luis Obispo, California: 35.447453, -120.508236: : 7/7/2019: Boaz Benaiah Solorio: 7 Jul 2019 :
GBIFID: 2283219419; Occurrence Remarks: Found basking next to small cabin, coiled and seemingly relaxed. Rather than show any defensive behaviour, it made a quick yet graceful escape underneath said cabin.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5168515550; Occurrence Remarks: Rattlesnake on front porch;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5198456860; Occurrence Remarks: I almost stepped on this well-camouflaged, 1.5 ft long Northern Pacific Rattlesnake on the trail. Unfortunately, it was dead. I moved it onto a rock so I could get a closer look. My favorite Western Rattlesnake observations: Xtra Large in Fort Ord: https://www.inaturalist.org/observations/90924915 Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) Rangemap of ssp: Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Age cannot be determined by number of rattles on tail. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Irenes Vipers (Viperidae) family observations on INaturalist: Animal Diversity Web (ADW) is an online database, an encyclopedia of animal natural history, distribution, classification, and conservation biology: https://animaldiversity.org/ Glossary for Animal Terminology: Animal Diversity Web: https://animaldiversity.org/glossary/ Irenes (aparrot1) Profile Page on INaturalist listing Nature Resources (includes online references with links) for Plants, Birds, Fungi, Lepidoptera, Arachnids, Reptiles, Amphibians, Marine Life, Plant Galls, and more: https://www.inaturalist.org/people/3188668;; Coordinate Uncertainty in Meters: 4.00000.

Coconino, Arizona: 36.091784, -112.133198: : 10/10/2018: Rob of the wildernessvagabond.com: 10 Oct 2018 :
GBIFID: 2294546277; Occurrence Remarks: Grand Canyon Pink Rattlesnake observed, yowee, along the Tonto Trail, Grand Canyon, South Rim, Arizona, USA Crotalus oreganus abyssus;; Coordinate Uncertainty in Meters: 244.00000.

Coconino, Arizona: 36.079937, -112.061078: : 10/10/2018: Rob of the wildernessvagabond.com: 10 Oct 2018 :
GBIFID: 2294547922; Occurrence Remarks: Grand Canyon Pink Rattlesnake, Crotalus oreganus abyssu Observed and photographed on the Tonto Trail, Grand Canyon NP, Arizona, USA;; Coordinate Uncertainty in Meters: 1718.00000.

GBIFID: 5217477133; Occurrence Remarks: Wanted to add a juvenile caught on the grounds here at tassajara.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2331921410; Occurrence Remarks: Looks abyssus to me, but found right on the edge of where they hit lutosus. Although Inat doesnt recongnize abyssus anymore.;; Coordinate Uncertainty in Meters: 162372.00000.

GBIFID: 2331937956; Occurrence Remarks: On our nighthike up Eagle Point;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2350349443; Occurrence Remarks: Bad morning for rattlesnakes on this stretch of road.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1269545068; Occurrence Remarks: This snake was very inactive, and moved very little during our encounter. It was still in the same location at 1210 PDT. Air temperature was 55 F at initial encounter. Theres some question whether this could be a C. stephensi. Opinions please!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1269555318; Occurrence Remarks: This observation highlighted different levels of naturalist intensity in two sisters. My sister, @lisakilgore05, spotted this rattler placidly basking stream side as she was following a butterfly (advanced spotting while distracted!). She spun on her heels, crying rattlesnake, to which I responded by heading in the opposite direction she expected or preferred, towards the snake, of course. So while she restrained our dogs and looked anxiously on, I carefully approached and obtained my favorite observation of the day.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2397609509; Occurrence Remarks: 1 of 3 observed lastnight;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2423168913; Occurrence Remarks: Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2429352029; Occurrence Remarks: Abyssus;; Coordinate Uncertainty in Meters: 162372.00000.

GBIFID: 2429491032; Occurrence Remarks: Not a great photo. It was on the path but crawled under the brush by the time I got the camera out.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2429513688; Occurrence Remarks: A Grand Canyon Pink along Havasu Creek. About 70cm if I remember correctly.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 2445123865; Occurrence Remarks: Not sure what kind of rattlesnake this is. Came across it in the Grand Canyon;; Coordinate Uncertainty in Meters: 8227.00000.

GBIFID: 2451744258; Occurrence Remarks: Roadkill.;; Coordinate Uncertainty in Meters: 106.00000.

GBIFID: 1291123043; Occurrence Remarks: This large rattlesnake was right in the middle of the trail, obscured by overhanging vegetation. I was occupied with looking for moths, rather than watching where I was going. Thankfully my friend was in front of me, and spotted the snake before we stepped on it.;; Coordinate Uncertainty in Meters: 235.00000.

GBIFID: 2563566654; Occurrence Remarks: Pinnacles on trail;; Coordinate Uncertainty in Meters: 6846.00000.

GBIFID: 2597794988; Occurrence Remarks: More trip details here: Coordinate Uncertainty in Meters: 28620.00000.

San Luis Obispo, California: 35.594828, -120.321016: : 4/30/2020: starbuckspearthe3rd: 30 Apr 2020 :
GBIFID: 2620045234; Occurrence Remarks: Dead in the road;; Coordinate Uncertainty in Meters: 4067.00000.

GBIFID: 2634334627; Occurrence Remarks: Small must of been a baby, rattle not visible;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2802753442; Occurrence Remarks: This was hiding under my bucket while searching for fossilized shark teeth.;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2823238128; Occurrence Remarks: On trail-retaining log in Garrapata, small rattlesnake;; Coordinate Uncertainty in Meters: 982.00000.

GBIFID: 2864578733; Occurrence Remarks: Juvenile, had no rattles.;; Coordinate Uncertainty in Meters: 28620.00000.

GBIFID: 2868149963; Occurrence Remarks: Younger snake. About a foot long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1562944783; Occurrence Remarks: It seemed like a cool day for snakes. This one must have been hungry!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2901692623; Occurrence Remarks: Juvenile about one foot long.;; Coordinate Uncertainty in Meters: 28677.00000.

GBIFID: 2980770928; Occurrence Remarks: Salt Camp, LCR;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1571087561; Occurrence Remarks: On rocks 1/2 mile south of CO River along Hermit Trail;; Coordinate Uncertainty in Meters: 1793.00000.

GBIFID: 1571096339; Occurrence Remarks: black and white stripes near tail, small black rattle.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2988449417; Occurrence Remarks: Same location as lionΓÇÖs mane mushroom from yesterday!!!;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2988385011; Occurrence Remarks: In a burrow on top of the right-side aqueduct berm.;; Coordinate Uncertainty in Meters: 884.00000.

Monterey, California: 36.491253, -121.764275: : 4/19/2026: anyamoves: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Luis Obispo, California: 35.37602, -120.011689: : 7/4/2017: Alyssa Semerdjian: 4 Jul 2017 :

GBIFID: 3061808776; Occurrence Remarks: Grand Canyon Pink Rattlesnake, Hopi, or Mojave Rattlesnake. It was crossing the dirt path on a sunny day and did not appear aggressive at all.;; Coordinate Uncertainty in Meters: 3522.00000.

GBIFID: 911505423; Occurrence Remarks: Northern Pacific Rattlesnake - ambush mode;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3097266638; Occurrence Remarks: Kern Canyon Crotalus with a splash of color. ;);; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3097012043; Occurrence Remarks: small, hatchling? Moving quickly.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3097148188; Occurrence Remarks: Crossing the road, 78 deg F;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 1586929290; Occurrence Remarks: Near Alta Peak/Wolverton trail sign, Sequoia Natiinal Park, CA.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 3112469745; Occurrence Remarks: Interesting find - Noticed tracks crossing road so we slowed down. Snake began rattling from under a bush allowing us to hear it as we drove by.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3113321058; Occurrence Remarks: Very small juvenile captured in order to release away from house. Notice size in comparison to thumb. (Distortion in second photo is a seam in the container.);; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 3113597646; Occurrence Remarks: Photos courtesy of Brianna Maddelena.;; Coordinate Uncertainty in Meters: 3138.00000.

GBIFID: 3113635931; Occurrence Remarks: The first of two seen today. The other was too angry to stop for a photo - yikes!;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3118340155; Occurrence Remarks: Just hit by a car :(;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1668840259; Occurrence Remarks: A little guy, we just barely avoided stepping on;; Coordinate Uncertainty in Meters: 192.00000.

GBIFID: 3124635799; Occurrence Remarks: Photos by Manfred Kopish;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3124624763; Occurrence Remarks: Photos by Manfred Kopish;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3302531928; Occurrence Remarks: Seen an hour and 30 minutes apart at same location. Against a rock along the main paved path with high foot traffic. Identified as a possible Grand Canyon Rattlesnake by a herpetologist friend.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3307211710; Occurrence Remarks: Rattlesnake eating a ground squirrel. Photo sent to me by a friend.;; Coordinate Uncertainty in Meters: 6421.00000.

GBIFID: 3314147895; Occurrence Remarks: safely relocated away from residence.;; Coordinate Uncertainty in Meters: 333.00000.

GBIFID: 1677347860; Occurrence Remarks: Sprague Ranch;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Obispo, California: 35.583563, -120.90303: : 7/26/2021: kellyalycemcdonald: 26 Jul 2021 :

GBIFID: 3335105954; Occurrence Remarks: Slightly green in color; doesnt show up well in the photos;; Coordinate Uncertainty in Meters: 28592.00000.

GBIFID: 3337727011; Occurrence Remarks: I think this rattlesnake could have easily bitten me, but it chose to rattle instead. I am exceedingly grateful.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3343873142; Occurrence Remarks: Seen by a friend near Kernville. Fascinated by the lack of pattern IΓÇÖm used to seeing in Southern Pacifics. @gregpauly ?;; Coordinate Uncertainty in Meters: 3530.00000.

GBIFID: 4046479312; Occurrence Remarks: The crotalus (crotalid?) is under the toxicodendron. 8+ rattles in 2nd,3rd img.;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 3355601719; Occurrence Remarks: Rattlesnake, approx. 4ft long with 8 segments on rattle, slithered across the trail at Sobranes Creek. Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/214450559 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3384436031; Occurrence Remarks: Found in the Grand canyon along the river. Hatchling black tail?;; Coordinate Uncertainty in Meters: 28534.00000.

GBIFID: 3385100959; Occurrence Remarks: Grand canyon rattlesnake;; Coordinate Uncertainty in Meters: 28563.00000.

GBIFID: 3385040185; Occurrence Remarks: dead on dirt road;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 1807305189; Occurrence Remarks: Photo by Ben Smith;; Coordinate Uncertainty in Meters: 378.00000.

GBIFID: 891087619; Occurrence Remarks: on Tunnel trail path - inside the tunnel. 1:35;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1831188864; Occurrence Remarks: Pinnacles National Park;; Coordinate Uncertainty in Meters: 11885.00000.

Occurrence Remarks: On trail near Buck Creek; Coordinate Uncertainty in Meters: 20.00000.

Tulare, California: 35.985098, -118.48047: : 8/22/2025: Hunter Holcomb: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Kern, California: 35.699653, -119.797368: : 7/8/2026: Alexander Gregory Mason: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Monterey, California: 36.281688, -121.855475: : 7/2/2026: resonantdonkey: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Benito, California: 36.481888, -121.180022: : 7/7/2026: Sienna Carrillo: 7 Jul 2026 ; Coordinate Uncertainty in Meters: 19.00000.

Monterey, California: 36.240401, -121.748483: : 9/1/2025: lidiad: 1 Sep 2025 ; Coordinate Uncertainty in Meters: 1198.00000.

Monterey, California: 36.457838, -121.91473: : 7/9/2026: Sheldon Logan: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 55.00000.

San Benito, California: 36.475956, -121.187488: : 8/23/2025: R.J. Adams: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Tulare, California: 35.984066, -118.481143: : 8/22/2025: Hunter Holcomb: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 9.00000.

Monterey, California: 36.376653, -121.551588: : 9/5/2025: Jeremiah Degenhardt: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Benito, California: 36.596245, -121.093976: : 9/6/2025: R.J. Adams: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 28534.00000.

Monterey, California: 36.387437, -121.550087: : 7/13/2026: juliathompson6: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 24.00000.

Monterey, California: 36.555745, -121.697058: : 7/14/2026: eddiemaquina: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Monterey, California: 36.555299, -121.696443: : 7/14/2026: eddiemaquina: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 35.00000.

Coconino, Arizona: 36.090572, -112.088797: : 6/13/2026: lostoutdoorsman: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Monterey, California: 36.38742, -121.54998: : 7/17/2026: natwdonne: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Crotalus oreganus abyssus; Coordinate Uncertainty in Meters: 25.00000.

Monterey, California: 36.37343, -121.535126: : 7/17/2026: Finn Torres: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 516.00000.

Tulare, California: 36.479887, -118.405438: : 7/14/2026: Garrett Craig: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 45.00000.

Kern, California: 35.73823, -119.793521: : 7/22/2026: Alexander Gregory Mason: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 28649.00000.

Occurrence Remarks: Got confused and briefly veered off the main trail by accident and I got a very stern warning from this beautiful creature. Terrifying but incredible moment.; Coordinate Uncertainty in Meters: 313.00000.

Tulare, California: 36.445472, -118.975701: : 7/17/2026: taco_night: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 28534.00000.

Fresno, California: 36.78582, -120.782272: : 4/3/2026: Steve Hromada: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Occurrence Remarks: Found dead on road; Coordinate Uncertainty in Meters: 23.00000.

Occurrence Remarks: Occurrence Remarks: Juvenile crossing road; Coordinate Uncertainty in Meters: 23.00000.

Occurrence Remarks: Occurrence Remarks: Mature snake moved from road alive; Coordinate Uncertainty in Meters: 20.00000.

Monterey, California: 36.655939, -121.801712: : 10/27/2025: hernandez211: 27 Oct 2025 ; Coordinate Uncertainty in Meters: 11.00000.

Monterey, California: 36.686112, -121.777528: : 10/29/2025: aldanaak: 29 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.68562, -121.77558: : 10/19/2025: aldanaak: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: found dead on a local hiking trail, approx 50cm long.

Occurrence Remarks: Absolute adrenaline rush. I accidentally stepped over the neck/head on my walk. No movement from snake at first then caught in slithering away. Rare to see these at QH. Temperature high 80s.; Coordinate Uncertainty in Meters: 37.00000.

Santa Cruz, California: 36.943993, -122.039456: : 7/14/2024: nothingmajor: 14 Jul 2024 ; Coordinate Uncertainty in Meters: 45199.00000.

Monterey, California: 36.684191, -121.777711: : 9/6/2025: Bart Kowalski: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Clara, California: 37.170912, -121.73102: : 9/7/2025: susanramos: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Coconino, Arizona: 36.957405, -111.897955: : 9/27/2025: bill_orman: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 9.00000.

Monterey, California: 36.685572, -121.775505: : 4/2/2026: bellartle: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Monterey, California: 36.68145, -121.770997: : 9/18/2025: coking: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4096593406; Occurrence Remarks: First sighting of the season;; Coordinate Uncertainty in Meters: 2315.00000.

Santa Clara, California: 37.172117, -121.6754: : 3/8/2026: ekdewing10899: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.675792, -121.785592: : 3/18/2026: Aisha Jimenez: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 1595.00000.

Fresno, California: 36.790712, -118.598938: : 5/24/2026: Tommy Lau: 24 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Monterey, California: 36.685413, -121.773995: : 4/20/2026: bkparz: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Fresno, California: 37.038742, -118.555121: : 5/17/2026: CAMERON MENDOZA: 17 May 2026 ; Coordinate Uncertainty in Meters: 38682.00000.

San Benito, California: 36.817303, -121.158692: : 4/13/2026: summerwake: 13 Apr 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Santa Clara, California: 37.145725, -121.761328: : 2/26/2026: Maria Lad: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Clark, Nevada: 36.668398, -114.082441: : 4/15/2026: Francis J. Golden: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Santa Cruz, California: 37.136522, -122.027281: : 4/16/2026: James Maughn: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.14628, -121.775249: : 4/17/2026: love4mine: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 26.00000.

Monterey, California: 36.685312, -121.776108: : 4/20/2026: Josefina: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Madera, California: 37.103239, -119.747742: : 4/22/2026: Seth: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 37.133377, -119.21489: : 4/8/2026: Preston Ernest: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 36.996095, -119.707895: : 4/24/2026: Shaun Root: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Fresno, California: 36.61435, -120.685032: : 4/15/2026: fiskefugl: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 28505.00000.

Fresno, California: 36.81392, -119.37773: : 4/26/2026: Rory Telemeco: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Fresno, California: 36.81332, -119.380333: : 4/26/2026: Steve Hromada: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 162.00000.

Monterey, California: 36.684978, -121.774528: : 11/1/2025: sbatory: 1 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Benito, California: 36.922439, -121.350761: : 5/19/2026: James Maughn: 19 May 2026 ; Coordinate Uncertainty in Meters: 28476.00000.

Fresno, California: 37.002808, -119.136108: : 5/12/2026: Max Miley: 12 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.082692, -121.533492: : 5/19/2026: John Sullivan: 19 May 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Santa Clara, California: 37.174979, -121.846731: : 5/21/2026: defrees: 21 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.012172, -121.704948: : 5/21/2026: karenseroff: 21 May 2026 ; Coordinate Uncertainty in Meters: 191.00000.

Santa Cruz, California: 37.110896, -122.171712: : 5/18/2026: herbiebond: 18 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 36.803312, -118.546747: : 5/22/2026: ckriloff: 22 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Fresno, California: 36.69872, -120.800163: : 5/18/2026: Steve Hromada: 18 May 2026 ; Coordinate Uncertainty in Meters: 971.00000.

Fresno, California: 36.863225, -119.313508: : 5/23/2026: erinewyatt: 23 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Monterey, California: 36.685078, -121.776108: : 5/9/2026: Linda Anderson: 9 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Washington, Utah: 37.109894, -113.456963: : 5/27/2026: Dylan C Thomas: 27 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.173225, -121.672538: : 5/28/2026: chrisim: 28 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Fresno, California: 36.602967, -120.62423: : 5/29/2026: Brandon Mukogawa: 29 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Fresno, California: 37.144916, -119.397618: : 4/18/2026: california_every_reptile: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 37.097132, -119.394317: : 4/18/2026: california_every_reptile: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Occurrence Remarks: Out hiking with my GSD, going to our favorite rest stop. My GSD stopped dead in her tracks and wouldnΓÇÖt let me go forward.; Coordinate Uncertainty in Meters: 760.00000.

Monterey, California: 36.684539, -121.774051: : 5/27/2026: Joe Miller: 27 May 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Fresno, California: 37.048996, -119.505859: : 5/31/2026: Kozmo M.: 31 May 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Santa Clara, California: 37.084778, -121.785705: : 5/31/2026: sarahlil: 31 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 1890067422; Occurrence Remarks: DOR - Im thinking Abyssus based on range and previous records in the area. Thoughts?;; Coordinate Uncertainty in Meters: 122.00000.

Coconino, Arizona: 36.935196, -111.426079: : 11/1/2025: jakebthom: 1 Nov 2025 ; Coordinate Uncertainty in Meters: 209.00000.

GBIFID: 4111828896; Occurrence Remarks: Small rattlesnake about 10-12 inches long. Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/214450559 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 3.00000.

San Benito, California: 36.819547, -121.539469: : 6/13/2026: Francisco Loza: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 146.00000.

GBIFID: 4103289399; Occurrence Remarks: Juvenile rattlesnake. I almost stepped on this little guy. Didnt see it at first. (Figueroa Trail);; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.678597, -121.769608: : 3/24/2026: Joe Miller: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Madera, California: 37.00678, -119.808777: : 2/17/2026: Lexine Schroeder: 17 Feb 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: Settle down boys; Coordinate Uncertainty in Meters: 28447.00000.

Monterey, California: 36.624175, -121.778275: : 3/3/2026: Joseph Castello: 3 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Cruz, California: 37.097952, -122.047372: : 3/4/2026: James Maughn: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Monterey, California: 36.619092, -121.766578: : 3/12/2026: Joseph Castello: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.14998, -121.894801: : 3/12/2026: Andrei: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Dead in the middle of the trail. Little fella.; Coordinate Uncertainty in Meters: 3.00000.

Madera, California: 37.003253, -119.75113: : 3/13/2026: K Calderala: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Cruz, California: 37.056964, -122.173852: : 3/15/2026: herbiebond: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Cruz, California: 37.182422, -122.146348: : 3/16/2026: James Maughn: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.152348, -121.774439: : 3/22/2026: Parsa Fard: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Monterey, California: 36.68503, -121.774567: : 9/30/2025: sgoel: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3903483172; Occurrence Remarks: Found a big one in the workshop today, move along buddy!;; Coordinate Uncertainty in Meters: 25.00000.

Santa Clara, California: 37.176231, -121.833075: : 6/10/2018: Chloe and Trevor Van Loon: 10 Jun 2018 :

GBIFID: 3859389622; Occurrence Remarks: With dead rodent of some sort, far right.;; Coordinate Uncertainty in Meters: 4.00000.

Madera, California: 37.091261, -119.721936: : 4/28/2026: chase_honaker: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.112408, -121.356888: : 4/29/2026: Brooke Sheridan: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Santa Cruz, California: 36.969303, -122.083061: : 4/30/2026: cruising-camille: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Santa Cruz, California: 36.969312, -122.083053: : 4/30/2026: cruising-camille: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Clara, California: 37.064282, -121.226361: : 5/1/2026: jprbelli: 1 May 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Fresno, California: 37.130256, -119.412022: : 5/1/2026: chase_honaker: 1 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Benito, California: 36.773102, -121.410706: : 5/2/2026: maelstrom_9: 2 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 37.14005, -119.383867: : 5/2/2026: Emily Erickson: 2 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Fresno, California: 36.961513, -119.351067: : 5/2/2026: Steve Hromada: 2 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Fresno, California: 37.020518, -119.46406: : 5/1/2026: Rodney Olsen: 1 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.756864, -121.50209: : 5/9/2026: gsexauer: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.088829, -121.725958: : 5/9/2026: servatis16: 9 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Washington, Utah: 37.066707, -113.895341: : 5/10/2026: Sawyer Drachman: 10 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Washington, Utah: 37.028445, -113.687426: : 5/11/2026: Sawyer Drachman: 11 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Occurrence Remarks: No idea? Any ideas?; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 36.91359, -119.266667: : 4/4/2026: Rick_Larimore: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Cruz, California: 37.080594, -122.046676: : 5/4/2026: James Maughn: 4 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Monterey, California: 36.681114, -121.771061: : 5/1/2026: avery elizabeth: 1 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.68537, -121.776122: : 4/20/2026: Andrea Dingeldein: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: DOR (in case that wasnt already clear.); Coordinate Uncertainty in Meters: 11.10000.

Santa Cruz, California: 37.042291, -121.763422: : 3/9/2026: Parsa Fard: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.146823, -121.778269: : 3/9/2026: Parsa Fard: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Monterey, California: 36.685138, -121.781822: : 3/18/2026: Tyler Williams: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 35.00000.

Santa Clara, California: 37.079464, -121.737493: : 3/9/2026: Parsa Fard: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Washington, Utah: 37.126966, -113.936119: : 5/11/2025: gwardenray: 11 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 37.048109, -119.400574: : 5/1/2025: demello1: 1 May 2025 ; Coordinate Uncertainty in Meters: 15381.00000.

Monterey, California: 36.686272, -121.777528: : 9/21/2025: aldanaak: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.186994, -121.546761: : 9/27/2025: cahiker: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Washington, Utah: 37.1785, -113.715867: : 9/27/2025: cryptobranchidae45: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.156345, -121.886672: : 5/11/2026: Sean Westenberg: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Photo isnt very good as we had to quickly move it before it became roadkill. So youll just have to take my word for it. ≡ƒÿå; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 36.793392, -118.667463: : 5/12/2026: keugila: 12 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Fresno, California: 36.710265, -120.74545: : 5/10/2026: K Calderala: 10 May 2026 ; Coordinate Uncertainty in Meters: 28505.00000.

Monterey, California: 36.60038, -121.674815: : 5/13/2026: Griffin Chaffin-Quiray: 13 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Fresno, California: 36.997069, -119.151193: : 3/28/2026: freemont7: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 2846.00000.

Fresno, California: 36.918478, -119.246697: : 5/16/2026: James T. Von Tersch: 16 May 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Santa Cruz, California: 37.166023, -122.064772: : 5/18/2026: James Maughn: 18 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Cruz, California: 37.025734, -122.204416: : 5/25/2026: ajnator: 25 May 2026 ; Coordinate Uncertainty in Meters: 104.00000.

Santa Cruz, California: 37.028812, -121.761029: : 3/10/2026: Parsa Fard: 10 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Cruz, California: 37.104467, -121.890372: : 3/19/2026: pcaligiuri: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.155142, -121.414655: : 3/18/2026: John Kenny: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 36.721263, -120.867562: : 3/20/2026: wyattherp: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.17273, -121.772895: : 3/21/2026: wildflowerwatching: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Washington, Utah: 37.182052, -113.645099: : 3/21/2026: Solid Serpents: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 851.00000.

Occurrence Remarks: Young one on the trail on an unseasonably hot day; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: My first this year; Coordinate Uncertainty in Meters: 0.11000.

Santa Cruz, California: 37.068876, -122.132383: : 3/21/2026: herbiebond: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.10215, -121.81968: : 3/26/2026: KenH: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Occurrence Remarks: Updated to add two photos. The first ones are from cellphone and the last two are from DSLR. All are of the same snake.; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.146953, -121.799122: : 3/29/2026: lazarus: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: https://youtu.be/3BumWNLK_os; Coordinate Uncertainty in Meters: 10.00000.

Santa Cruz, California: 37.086536, -122.066239: : 4/8/2026: James Maughn: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Washington, Utah: 37.187641, -113.65141: : 4/7/2026: magicwombat: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 959.00000.

Fresno, California: 36.893326, -119.221619: : 4/7/2026: Lgmjon64: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: juvenile; located close to Coast Range Fence Lizard Sceloporus occidentalis ssp. bocourtii https://www.inaturalist.org/observations/349268139; Coordinate Uncertainty in Meters: 228.00000.

Santa Clara, California: 37.181574, -121.785117: : 10/8/2020: riverwalker232: 8 Oct 2020 ; Coordinate Uncertainty in Meters: 961.00000.

Occurrence Remarks: Maybe dead? Not seen in the return trip; Coordinate Uncertainty in Meters: 2.00000.

Washington, Utah: 37.037157, -113.746741: : 5/11/2025: Joey Mugleston: 11 May 2025 ; Coordinate Uncertainty in Meters: 28447.00000.

Mohave, Arizona: 36.942703, -113.562653: : 7/12/2025: Madison: 12 Jul 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Mohave, Arizona: 36.689727, -113.458893: : 6/2/2026: colorful-corvid: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Washington, Utah: 37.137689, -113.299653: : 6/4/2026: mia bozikian: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Santa Clara, California: 37.126586, -121.734833: : 6/5/2026: Nathan Green: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Occurrence Remarks: I think itΓÇÖs called a Grand Canyon rattlesnake when found here in Paria Canyon, but that wasnΓÇÖt an option.; Coordinate Uncertainty in Meters: 2.00000.

Santa Cruz, California: 37.02638, -122.048551: : 6/6/2026: James Maughn: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Cruz, California: 37.079933, -122.003348: : 6/6/2026: James Maughn: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.180543, -121.826887: : 6/7/2026: Lia Keener: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Fresno, California: 36.813933, -118.549142: : 6/6/2026: kennaw: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Fresno, California: 36.794322, -118.571922: : 6/6/2026: kennaw: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Monterey, California: 36.675788, -121.771613: : 10/24/2025: mahaila26: 24 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Fresno, California: 36.83828, -118.541695: : 7/14/2026: Gabriel Silva Collins: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.62787, -121.76625: : 6/14/2026: laurafalk: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Mohave, Arizona: 36.940055, -113.561295: : 6/18/2026: Madison: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Fresno, California: 36.801237, -118.548325: : 6/19/2026: christineann123: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Fresno, California: 36.788255, -118.539127: : 6/20/2026: intricate_nautilus: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 8324.00000.

Santa Clara, California: 37.0835, -121.785295: : 6/14/2026: sara schneider: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 38.00000.

Santa Cruz, California: 36.97262, -122.08545: : 6/26/2026: susanhschwartz: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: I could not get a photo of the dangerous end, but I did get a photo of the noisy end. I count eight or nine rattles.; Coordinate Uncertainty in Meters: 6.00000.

Washington, Utah: 37.160791, -113.604456: : 6/20/2026: california_every_reptile: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Occurrence Remarks: Shed skin, 2-3 long; Coordinate Uncertainty in Meters: 5.00000.

Santa Clara, California: 37.095557, -121.676362: : 9/27/2025: Parsa Fard: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 28447.00000.

Unknown, California: 36.881969, -122.078213: : 4/9/2026: James Maughn: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 28476.00000.

Monterey, California: 36.681239, -121.770898: : 9/19/2025: Joe Miller: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3415650490; Occurrence Remarks: It was making a rattling noise. It also didnΓÇÖt attack us and was somewhat scared.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1837755101; Occurrence Remarks: Appeared rather torpid. Was not rattling or appearing defensive or aggressive.;; Coordinate Uncertainty in Meters: 1263.00000.

GBIFID: 1838036051; Occurrence Remarks: On the dam. Fresh corpse 12-13 inches long segment. Flies, but no smell of decay. Killer and method unknown, but someone took the head and rattle.;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 3712743808; Occurrence Remarks: Hanging out under a log on a warm day;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3742986861; Occurrence Remarks: Obsevation coordinates obscured at the request of the survey leader;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 1838353772; Occurrence Remarks: I saw this snake while biking Million Dollar Rd.;; Coordinate Uncertainty in Meters: 217.00000.

GBIFID: 3760323740; Occurrence Remarks: By the shore at the reservoir. Small in size - young rattlesnake?;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 3764108598; Occurrence Remarks: Pic provided by A. Morro. They photographed the snake prior to it being released further away from the shop that it was hiding by.;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 3764106639; Occurrence Remarks: Pruning suckers off the trunk of a walnut tree. Was not expecting to find a rattlesnake coiled up in the shade of the suckers more than a foot off the ground. Very close call!;; Coordinate Uncertainty in Meters: 3586.00000.

GBIFID: 1839242824; Occurrence Remarks: Photo by S.Staedtler;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 1839270188; Occurrence Remarks: This Northern Pacific Rattlesnake had just struck and killed this ground squirrel and was preparing for a meal.;; Coordinate Uncertainty in Meters: 24364.00000.

GBIFID: 3859129396; Occurrence Remarks: Last pic shows rattle;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 3858562908; Occurrence Remarks: point Blue training with 2014 crew;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847504484; Occurrence Remarks: Fort Ord Natural Preserve - UCSC;; Coordinate Uncertainty in Meters: 192.00000.

GBIFID: 3859319787; Occurrence Remarks: Almost bit me. 4th rattlesnake spotted on the rae lakes loop.;; Coordinate Uncertainty in Meters: 985.00000.

GBIFID: 3873700849; Occurrence Remarks: About 3 feet long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4063063496; Occurrence Remarks: Made it across the road safely;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 3889255535; Occurrence Remarks: abyssus;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 3892360826; Occurrence Remarks: With alarm-calling chipmunks;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3892292195; Occurrence Remarks: 2 max, probably less It was on the trail, not moving except for flicking its tongue;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 1850932815; Occurrence Remarks: Shed skin of a rattlesnake coming out from a rodent burrow.;; Coordinate Uncertainty in Meters: 2064.00000.

GBIFID: 1850957632; Occurrence Remarks: heard rattle when taking picture, under concrete sidewalk, can see pattern in dark area when zoomed in;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 1880570177; Occurrence Remarks: SVL approximately 2ft+- Weight 320g;; Coordinate Uncertainty in Meters: 2064.00000.

GBIFID: 1880571319; Occurrence Remarks: Shed skin;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3963261770; Occurrence Remarks: this observation is part of an ongoing study to document the newt roadkill problem around Lexington Reservoir. To learn more about it, go to https://www.bioblitz.club/newts We need your help! If youd like to join our team, please message me!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4039472351; Occurrence Remarks: Just north of the Kings River on the trail to Garlic Falls. Sierra National Forest, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4054818912; Occurrence Remarks: Found dead with head damaged;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2573787003; Occurrence Remarks: Watch your step!;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 4063036253; Occurrence Remarks: South Fork of the Kings River, Kings Canyon National Park, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4062704299; Occurrence Remarks: Lewis Creek Trail, Kings Canyon National Park, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4076031696; Occurrence Remarks: Just north of the Kings River on the trail to Garlic Falls. Sierra National Forest, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4076161860; Occurrence Remarks: Salamander Falls, just north of the Kings River on the trail to Garlic Falls, Sierra National Forest, CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4116557794; Occurrence Remarks: This was dead, missing its tail and had puncture wounds (Im guessing) along its body - perhaps from talons?;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4121002606; Occurrence Remarks: Cruised on road;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4120931554; Occurrence Remarks: Hiding its tail, so could be a gopher snake. About 3 long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4126755890; Occurrence Remarks: Little baby with hardly any rattle. Very calm.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4133917207; Occurrence Remarks: Added predation bonus.;; Coordinate Uncertainty in Meters: 159.00000.

GBIFID: 4165716723; Occurrence Remarks: Made sure it got across the road safely.;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 1931496867; Occurrence Remarks: 2-3 dark colored rattle segments;; Coordinate Uncertainty in Meters: 66.00000.

GBIFID: 4177146713; Occurrence Remarks: Sitting quietly in a large rock crevice.;; Coordinate Uncertainty in Meters: 628.00000.

GBIFID: 4177270776; Occurrence Remarks: Helped this lil guy cross the road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4400267559; Occurrence Remarks: Surveying BLM land, snake crossing the road.;; Coordinate Uncertainty in Meters: 764.00000.

GBIFID: 4413377928; Occurrence Remarks: Screen cap from a video. The snake was resting on the side of the trail - I disturbed it, it rattled at me, then decided to head across the trail and out of site.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4416755200; Occurrence Remarks: Crossing a dirt road, then coiled at the side;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4440809843; Occurrence Remarks: Agitated: was slithering down the middle of the road with mouth open and tail rattling as we drove in on this dirt road. As we stopped to watch the rattlesnake and avoid running it over, it moved to the side of the road, coiled up, and settled down a bit. We didnt notice this in the field, but my photos show that its lower jaw is bloody, though I see no obvious injury. Maybe blood from a recent prey item?;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4440796114; Occurrence Remarks: Exact location forgotten;; Coordinate Uncertainty in Meters: 9333.00000.

GBIFID: 4442491391; Occurrence Remarks: Warming in the sunlight;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4512186271; Occurrence Remarks: Very small, see second photo for scale;; Coordinate Uncertainty in Meters: 345.00000.

GBIFID: 1990514282; Occurrence Remarks: Hatchlings beneath cover board.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4522692841; Occurrence Remarks: 1 of 8 flipped under one board. Apart from the other 7 by a few feet.;; Coordinate Uncertainty in Meters: 56.00000.

GBIFID: 4522647817; Occurrence Remarks: 3 of 8 flipped under one board.;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 4522647812; Occurrence Remarks: 2 of 8 flipped under one board.;; Coordinate Uncertainty in Meters: 47.00000.

GBIFID: 4522697988; Occurrence Remarks: 5 of 8 flipped under one board.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4600020999; Occurrence Remarks: Private land between BLM parcels, near a gate on a road shoulder. 65F, sunny and clear Annual grassland adjacent to road. Area surrounded by fiddleneck fields and sagebrush. Found curled up next to gate; a mouse was seen in same spot earlier in the day, the snake was believed to have eaten that individual. Individual stayed in place throughout interaction. Identified as C. oreganus oreganus due to distribution, large scales, and saddles.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4863798287; Occurrence Remarks: This was a big guy - probably the biggest snake Ive seen in the wild. It was sunning himself on the trail. Possibly 5 ft. long. It appears to have a tick next to its eye: https://www.inaturalist.org/observations/228148919 We walked past it and it didnt budge. I thought it might be asleep, but these photos show its eyes open.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4863876789; Occurrence Remarks: Two large mature rattlesnakes curled up, basking in the sun, in a drainage area. They were not bothered at all by us watching them 3 feet away. Link to 2nd one nearby: https://www.inaturalist.org/observations/214628545 Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Age cannot be determined by number of rattles on tail. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/90924915 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 4863558636; Occurrence Remarks: Two large mature sleepy rattlesnakes curled up, basking in the sun, in a drainage area. They were not at all bothered by us watching them 3 feet away. Link to 2nd one nearby: https://www.inaturalist.org/observations/214450559 Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Age cannot be determined by number of rattles on tail. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/90924915 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 4863350960; Occurrence Remarks: Looks to have enjoyed a recent meal.;; Coordinate Uncertainty in Meters: 42788.00000.

GBIFID: 4868031128; Occurrence Remarks: Edge of road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2237426399; Occurrence Remarks: Scientific name: Coluber constrictor;; Coordinate Uncertainty in Meters: 96.00000.

GBIFID: 4901154352; Occurrence Remarks: in mucky area at the beginning of a stream, shady site in Muir Grove (sequoias);; Coordinate Uncertainty in Meters: 78.00000.

GBIFID: 4900986931; Occurrence Remarks: Two, same species;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4901399166; Occurrence Remarks: Dead great basin rattlesnake on the road;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4908480812; Occurrence Remarks: Didnt even acknowledge us, doing its own thing, moving along steadily;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 2237508833; Occurrence Remarks: Baby, no rattle;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 2237511760; Occurrence Remarks: Somehow, this is the first rattlesnake Ive recorded in Monterey County. Not sure how that can be, but there you are...;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 2238793247; Occurrence Remarks: dead baby rattlesnake on trail, run over by bike?;; Coordinate Uncertainty in Meters: 53.00000.

GBIFID: 4910980875; Occurrence Remarks: Found on road, I thought the car in front of me hit it but it seemed fine so hopefully it isnt injured. Ivins, UT temperature 90░;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4919212695; Occurrence Remarks: dead baby rattlesnake;; Coordinate Uncertainty in Meters: 272.00000.

GBIFID: 4919410809; Occurrence Remarks: Large, curled up Rattlesnake peacefully resting in a drainage culvert in Fort Ord NatΓÇÖl Monument. Location obscured to protect the innocent. My favorite Western Rattlesnake observations: Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Age cannot be determined by number of rattles on tail. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/90924915 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 4924139419; Occurrence Remarks: Eight rattle adult. Found while searching for horn lizards.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2238882576; Occurrence Remarks: juvenile with button rattle;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4926085901; Occurrence Remarks: Almost stepped on it! It was resting on the edge of the trail, right in the shade of a bush, which was contrasting with the bright sun on the sandy dirt. Bonny Doon Ecological Preserve All of my observations from this visit: Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936849883; Occurrence Remarks: Carefully ushered off road;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 4945758813; Occurrence Remarks: Baby snake; was roughly less than 1 foot long;; Coordinate Uncertainty in Meters: 792.00000.

GBIFID: 4945877618; Occurrence Remarks: Tiny! I canΓÇÖt imagine itΓÇÖs very old at all. Also found a second one not long after.;; Coordinate Uncertainty in Meters: 1178.00000.

GBIFID: 4950274552; Occurrence Remarks: On a hill at the Red Cliffs Reserve in St George, Utah, there were two Great Basin Rattlesnakes huddled together under some shade. A male and female that were most likely paired up.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4950340150; Occurrence Remarks: Brown Diamond pattern on the back with the black and white stripes on the tail below the rattle proves it is a Northern Pacific rattlesnake. It rattled at me!;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2239046775; Occurrence Remarks: Big basin camp grounds Small snake about 1ft long with brown and white designs;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4950396232; Occurrence Remarks: This is being tagged as either a gopher or a western rattlesnake. While the picture doesnΓÇÖt show it clearly, we did see a small rattle at the tip of its tail.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4952869349; Occurrence Remarks: Photo Credit: Ashley McDowd;; Coordinate Uncertainty in Meters: 4387.00000.

GBIFID: 4953007348; Occurrence Remarks: Wish I could get some camera shots of this guy but he escaped. Also saw my lifer infernalis today! Really bummed it got away before I could get any pics.;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4953142320; Occurrence Remarks: Tiny baby right in the middle of the trail;; Coordinate Uncertainty in Meters: 631.00000.

GBIFID: 4952948859; Occurrence Remarks: Under a cover board.;; Coordinate Uncertainty in Meters: 666.00000.

GBIFID: 4952350661; Occurrence Remarks: if you look closely at the 2nd photo, there were actually two of them;; Coordinate Uncertainty in Meters: 47.00000.

GBIFID: 4953030025; Occurrence Remarks: Snake;; Coordinate Uncertainty in Meters: 69.00000.

GBIFID: 2242894069; Occurrence Remarks: a big one!;; Coordinate Uncertainty in Meters: 4.00000.

Santa Cruz, California: 37.091849, -122.06482: : 7/23/2022: oilyboidcatchesthewoim: 23 Jul 2022 :

Santa Cruz, California: 37.091699, -122.064789: : 7/31/2024: oilyboidcatchesthewoim: 31 Jul 2024 :
GBIFID: 4976252972; Occurrence Remarks: 2 rattlesnakes intertwined, male and female? Last photo is after relocation and release.;; Coordinate Uncertainty in Meters: 25.00000.

Santa Cruz, California: 37.091663, -122.064978: : 7/13/2023: oilyboidcatchesthewoim: 13 Jul 2023 :

Santa Cruz, California: 37.091808, -122.064498: : 9/6/2024: oilyboidcatchesthewoim: 6 Sep 2024 :

Santa Cruz, California: 37.09182, -122.064466: : 10/23/2024: oilyboidcatchesthewoim: 23 Oct 2024 :

GBIFID: 4976584339; Occurrence Remarks: I believe this matches the id because of the blotches on its back rather than diamond shaped and Northern Pacific Rattlesnakes are the only species found in Northern California;; Coordinate Uncertainty in Meters: 3668.00000.

GBIFID: 4994022592; Occurrence Remarks: Saw these awhile ago-startled us to say the least but they had no interest. Are they fighting or mating?;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 5037281670; Occurrence Remarks: Looked patternless. Hard to tell since it was mostly in the shade;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2251916068; Occurrence Remarks: About three feet long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5087860290; Occurrence Remarks: I wandered a few yards off-trail, circling a big manzanita in hopes of butterflies, and suddently realized that I need to not take the next step. The snake might have been cold, and did not rattle -- I was fortunate to have spotted it in time. So stay on trails in the chaparral of Fort Ord;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 5133695141; Occurrence Remarks: Almost stepped on this one;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5134017109; Occurrence Remarks: Found in buckskin gulch, seemed to be very cold and wasnÆt moving;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5134347259; Occurrence Remarks: Observed during the annual wildflower survey at Cherry Springs in Sierra Azul Open Space Preserve. This area is not open to the public. I had a fantastic time in excellent company looking out for plants in flower. Thank you to Ellen for leading us out there and to Jennifer for keeping track of the species and also helping us all out with plant ID! It was great meeting many other enthusiastic people out to enjoy the day and contribute to this survey, which has been running for over 12 years. You can learn more about more volunteer opportunities with Midpeninsula Regional Open Space here: https://volunteer.openspace.org/ All of my observations from this visit: Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5134781004; Occurrence Remarks: 8 rings on tail;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5134906155; Occurrence Remarks: Found this guy meandering just off the Toe Trail;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 5140052583; Occurrence Remarks: Pattern and head shape suggest rattlesnake. I didnΓÇÖt get a picture but when he moved the rattle was obvious and very large. We also found him in a place nicknamed rattlesnake pit - with others who confirmed it was a rattlesnake;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 5140104697; Occurrence Remarks: are these the same species? male and female or nah? second one had much brighter patterns but could be a shedding thing;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 2269312369; Occurrence Remarks: road cruised;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5153195175; Occurrence Remarks: Mating;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5154451182; Occurrence Remarks: Spicy croissant;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5154782778; Occurrence Remarks: Under a coverboard. Observed during the UCSC CNP field trip to UCSC Fort Ord Natural Reserve, with UCSC FONR staff. Same individual observed in https://www.inaturalist.org/observations/274148470 https://www.inaturalist.org/observations/274203689 https://www.inaturalist.org/observations/274344939 https://www.inaturalist.org/observations/274759580 https://www.inaturalist.org/observations/274838395;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5154523314; Occurrence Remarks: with @nacairns;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2283108440; Occurrence Remarks: Recently Dead on recently cut grass, suggests it was accidentally killed by the mower when the park steward was mowing the field along Hunting Hollow Road.;; Coordinate Uncertainty in Meters: 1722.00000.

GBIFID: 5168501979; Occurrence Remarks: Bioe20F;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 5177169907; Occurrence Remarks: A single coil visible;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5198453666; Occurrence Remarks: Some crazy eyes on this one plus unusual color;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5198307748; Occurrence Remarks: Was on the phone with my sister and she got to hear me get excited about running into this rattlesnake :-) Mount Madonna County Park Hiked north up Merry-Go-Round Trail and looped back via Tie Camp Trail and Ridge Trail. Had planned on going west on Ridge to Blackhawk Trail to get back to the Sprig Day Use area but I went too slow. Got here via Rapid 568 bus from Diridon to Gilroy and bicycled to Sprig Day Use area. All of my observations from this visit: Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5199124078; Occurrence Remarks: DOR. Rattle cut off;; Coordinate Uncertainty in Meters: 110.00000.

GBIFID: 5198861037; Occurrence Remarks: Found crossing road on a full moon;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5205859269; Occurrence Remarks: I was watching a bird fly overhead and almost stepped on this guy who was crossing the trail. It coiled & rattled and I hopped back a few feet, then it crawled into the grass and went about its way. It was about 3 ft. long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5216048872; Occurrence Remarks: It was crushed by a tractor carrying gravel to repair a culvert on the road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1265576614; Occurrence Remarks: Sub-adult and Adult;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 1265578293; Occurrence Remarks: Calero County Park;; Coordinate Uncertainty in Meters: 1376.00000.

GBIFID: 5216099424; Occurrence Remarks: rattled at me before slithering away;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2311364218; Occurrence Remarks: Looked very bluish green.;; Coordinate Uncertainty in Meters: 176.00000.

GBIFID: 5231678233; Occurrence Remarks: 10ö Juvenile relocated away from houseboat;; Coordinate Uncertainty in Meters: 115.00000.

GBIFID: 2311403628; Occurrence Remarks: Appeared to be stepped on, or otherwise killed fairly recently.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2331909071; Occurrence Remarks: No pics from directly in front of it...I..er...didnt want to delay it. Yeah, thats it, didnt want to delay it. Heading to a pond. Saw tracks for about 5 others later.;; Coordinate Uncertainty in Meters: 43.00000.

GBIFID: 2350327057; Occurrence Remarks: What seems to be a hybrid of Viridis and abyssus, found right where the two overlap.. Thoughts? Im fully open to the idea of either really.;; Coordinate Uncertainty in Meters: 5975.00000.

GBIFID: 2350369783; Occurrence Remarks: At 11,000 feet, approximately 2-1/2 in diameter;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2429238256; Occurrence Remarks: dead on road;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1272111692; Occurrence Remarks: Young snake on the trail at Fort Ord Natural Reserve;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2597698049; Occurrence Remarks: Likely the same two snakes from the past few days.;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2597932012; Occurrence Remarks: Stepped right over this guy!!!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2813982477; Occurrence Remarks: Grand Canyon;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 3456189602; Occurrence Remarks: Grand Canyon;; Coordinate Uncertainty in Meters: 28476.00000.

GBIFID: 2626679945; Occurrence Remarks: Juvenile approximately one foot in length.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2802712984; Occurrence Remarks: Not old enough to have any buttons.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2823236054; Occurrence Remarks: Found in rocks near the trail;; Coordinate Uncertainty in Meters: 87.00000.

GBIFID: 1453520611; Occurrence Remarks: Small rattlesnake calmly sunning, snake turned and crawled up into the rocks, under the scrutiny of a Side-blotched Lizard.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 1453524470; Occurrence Remarks: Three snakes, likely just emerged.;; Coordinate Uncertainty in Meters: 28505.00000.

GBIFID: 2850724572; Occurrence Remarks: Two interacting Northern Pacific Rattlesnakes. The larger snake is over 4 feet long and its head was sticking up through a pile of sticks, tasting the air and swinging left to right, as if hunting. The smaller one is about 3 feet long with a contrasting color pattern from black, to grey-brown, to white. When I first saw it, I just glimpsed its black and white banded tail end racing through the sticks away from the larger snake. I first thought it was a banded black and white Kingsnake, but then I saw it more clearly turning and racing back past me as the larger snake continued to pursue it. The last two photos of my five posted above are of this smaller snake.;; Coordinate Uncertainty in Meters: 420.00000.

GBIFID: 2856629652; Occurrence Remarks: This was the second one we saw on the trail. Looks like a Western Diamondback to me.;; Coordinate Uncertainty in Meters: 186.00000.

GBIFID: 1500308426; Occurrence Remarks: Observed near Lees Ferry boat ramp in northern Arizona.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 2868186913; Occurrence Remarks: A cool gophersnake near a parking lot;; Coordinate Uncertainty in Meters: 263.00000.

GBIFID: 2883093735; Occurrence Remarks: found moving across trail pathway (cement) after a hot day during a heat wave- about 5 ft long -second time ive seen one on the coyote creek trail in morgan hill;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2999119616; Occurrence Remarks: Kings Canyon.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1978869963; Occurrence Remarks: I did not actually see this snake. It was photographed by Leon Markarian. I have seen rattlesnakes in Wilder Ranch before.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2429446201; Occurrence Remarks: Coyote Ridge 4/22. About 15 yards from first gate;; Coordinate Uncertainty in Meters: 0.11000.

Fresno, California: 36.717965, -120.333179: : 3/28/2026: scottduncan: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911503514; Occurrence Remarks: Hardly even saw this small individual who was basking in a sunny spot on a rock. Found this snake while on a field botany trip in the morning so the snake was probably trying to warm up, the snake sat there motionless the whole time.;; Coordinate Uncertainty in Meters: 115.00000.

GBIFID: 3079655402; Occurrence Remarks: ir01_10.jpg;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3079810415; Occurrence Remarks: ΓÇ£SmooshedΓÇ¥ was the technical term the students used.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 3097067752; Occurrence Remarks: Juvenile northern pacific rattlesnake;; Coordinate Uncertainty in Meters: 37.00000.

GBIFID: 3097146858; Occurrence Remarks: 38ΓÇ¥;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3109185941; Occurrence Remarks: Western. We shooed it off the road.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3109411517; Occurrence Remarks: That was my first guess, but ended up followings Seek advice. The Herps page suggests a lighter marking means itΓÇÖs an older rattler. Is this one older do you think? It was so placid, it looks stuffed full.;; Coordinate Uncertainty in Meters: 4649.00000.

GBIFID: 3113623371; Occurrence Remarks: Snake seen on the Cottle Trail at Calero County Park. I think it had a rattle, but looks much darker and lacking the diamond pattern of what I think a rattlesnake has?;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3117789617; Occurrence Remarks: My dad found this baby rattle snake.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 3118254280; Occurrence Remarks: Near the picnic tables;; Coordinate Uncertainty in Meters: 376.00000.

GBIFID: 3302393263; Occurrence Remarks: In my garage!!;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3302175933; Occurrence Remarks: In the middle of a slot canyon... Some people turned around rather than walk by, but it was probably too cold to do any harm;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891082186; Occurrence Remarks: Another county, another juvie rattlesnake.;; Coordinate Uncertainty in Meters: 1330.00000.

GBIFID: 3328038862; Occurrence Remarks: Heard it before saw it! Not too big, 3 away;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1024228795; Occurrence Remarks: A temporary obstacle on our path. Quite a loud guy Crotalus oreganus;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3337556034; Occurrence Remarks: Snake in the process of being moved from housing area;; Coordinate Uncertainty in Meters: 1737.00000.

GBIFID: 3337625350; Occurrence Remarks: Well camouflaged rattlesnake was curled up right next to the trail, (by rodent hole?), not rattling, though several people had passed right by. It was approximately 4 feet long with nine rattles. Definitely alive because I saw his head move. Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect. Northern Pacific Rattlesnake (Crotalus oreganus ssp. oreganus) is a venomous snake in the Vipers (Viperidae) family. A bite from this snake can cause death or serious illness or injury in humans that may require immediate medical care. It is commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. Adults are 15 - 36 inches long, (38 - 91 cm) sometimes up to 48 inches (121 cm) with 60 inches being the longest (151 cm). Neonates are about 10.5 inches in length (27 cm). It is a heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail consisting of loose interlocking hollow segments. Pupils are elliptical. Scales are keeled. Rattlesnakes are pit vipers which means they have two pits that are used to sense heat when hunting warm-blooded prey - with one pit on each side of the front of the head above the mouth. The ground color is variable, matching the environment - olive-green, gray, brown, golden, reddish brown, yellowish, or tan. Dark brown or black blotched markings, usually with dark edges and light borders, mark the back, with corresponding blotches on the sides. Dorsal blotches mark the front 2/3 of the body, change to dark bars on the body and dark and light rings on the tail which are well-defined and of uniform width. The underside is pale, sometimes weakly mottled. It usually has a light stripe extending diagonally from behind the eye to Young are born with a bright yellow tail with no rattle - just a single button which does not make a sound. They grow rattles and lose the yellow color as they age. The pattern is brighter on juveniles than on adults. They are primarily nocturnal and crepuscular during periods of excessive daytime heat, but also active during daylight when the temperature is more moderate. They are not active during cooler periods in Winter. In colder areas, they are known to den in burrows, caves, and rock crevices, sometimes in large numbers, and sometimes with other snake species. Rattlesnakes have long, hollow, movable fangs connected to venom glands. The fangs are replaced if broken. A snakes uses its fangs to inject a toxic venom which quickly immobilize its prey. A rattlesnake adult can control the amount of venom injected. Bites that inject venom into humans are potentially dangerous. Sometimes a rattlesnake bites but does not inject venom. These are called dry bites. A dry bite may still require medical attention. Even a dead snake can bite and inject venom if the jaws open and close reflexively when they are touched. Guide to the Amphibians and Reptiles of California Link to my favorite Northern Pacific Rattlesnake obs: https://www.inaturalist.org/observations/214450559 Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/ Rattlesnakes are commonly called a poisonous snake to indicate that its bite is dangerous, but that is not correct. It should be called a venomous snake. A poisonous snake can harm you if you eat it. A venomous snake can harm you if it bites you. . . Rattlesnakes are important members of the natural community. They will not attack, but if disturbed or cornered, they will defend themselves. Reasonable watchfulness should be sufficient to avoid snakebite. Give them distance and respect . . . Rattlesnakes are also among the most reasonable forms of dangerous wildlife: their first line of defense is to remain motionless; if you surprise them or cut off their retreat, they offer an audio warning; if you get too close, they head for cover. Venom is intended for prey so theyre reluctant to bite, and 25 to 50 percent of all bites are dry - no venom is injected. . . Excerpts from Snakebit: Confessions of a Herpetologist, Leslie Anthony, Greystone Books, 2008. Some Rattlesnakes Losing Their Warning Rattle In S. Dakota Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1802771466; Occurrence Remarks: Roadkill. On small side road.;; Coordinate Uncertainty in Meters: 127.00000.

GBIFID: 3385031930; Occurrence Remarks: Excellent find by Laura. Not exactly making itself easy to find.;; Coordinate Uncertainty in Meters: 53.00000.

GBIFID: 1831177388; Occurrence Remarks: Very cute juvenile resting under metal board.;; Coordinate Uncertainty in Meters: 16.00000.

Fresno, California: 36.999753, -119.008842: : 7/1/2026: planetboom: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.685763, -121.776345: : 8/27/2025: aldanaak: 27 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.686195, -121.776047: : 8/27/2025: aldanaak: 27 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Coconino, Arizona: 36.999308, -112.005971: : 8/23/2025: annie mull: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Monterey, California: 36.685353, -121.776458: : 8/26/2025: Joe Miller: 26 Aug 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Santa Cruz, California: 37.035933, -122.208542: : 8/30/2025: wildera: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.115006, -121.906811: : 7/8/2026: wyattherp: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.169662, -121.7397: : 8/23/2025: Ray Krebs: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Monterey, California: 36.684167, -121.777706: : 9/6/2025: masonrcole: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Monterey, California: 36.684201, -121.777707: : 9/6/2025: David Kisner: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Monterey, California: 36.68603, -121.777113: : 9/10/2025: aldanaak: 10 Sep 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Monterey, California: 36.685401, -121.775714: : 7/17/2026: jayhuilabalvin: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Cruz, California: 37.069199, -122.051198: : 8/18/2025: herbiebond: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 76.00000.

Coconino, Arizona: 36.722942, -111.900706: : 4/17/2024: pseudalpine: 17 Apr 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Road kill on Hicks Road. Looks like it had just ate a rodent.; Coordinate Uncertainty in Meters: 79.00000.

Washington, Utah: 37.187744, -113.308899: : 7/21/2026: scissortonight: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802375689; Occurrence Remarks: 2 individuals under the same metal sheet. froze the night before;; Coordinate Uncertainty in Meters: 2.00000.

Washington, Utah: 37.200772, -112.986781: : 4/6/2026: wrikard: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1841306335; Occurrence Remarks: The snake was in the gutter with several people around. It crawled over the sidewalk and went into a hole on the other side.;; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: Encountered in a quiet canyon on many pools trail; Coordinate Uncertainty in Meters: 2122.00000.

Occurrence Remarks: Occurrence Remarks: Didnt notice this snake until I heard the rattle; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Western rattlesnake?; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.255592, -122.334962: : 10/25/2025: susandn: 25 Oct 2025 ; Coordinate Uncertainty in Meters: 6592.00000.

Santa Clara, California: 37.210824, -121.891345: : 10/7/2025: eebert_inaturalist: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 229.00000.

Occurrence Remarks: About 10 inches long. Sunset 7:33; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.341045, -122.082764: : 9/7/2025: dpoznik: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 6457.00000.

Santa Clara, California: 37.330283, -122.092605: : 9/14/2025: tigers4ever: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 37.00000.

Occurrence Remarks: Two?!; Coordinate Uncertainty in Meters: 0.11000.

Santa Cruz, California: 37.224279, -122.091528: : 9/25/2025: Parsa Fard: 25 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4165642771; Occurrence Remarks: Roadkill.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3903383890; Occurrence Remarks: Its baby rattler season! Almost rode over this immobile juvenile rattlesnake ~7 inches on my bike.;; Coordinate Uncertainty in Meters: 2959.00000.

GBIFID: 4091864893; Occurrence Remarks: IΓÇÖm confident that itΓÇÖs the same individual I observed last year at this spot;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3947182192; Occurrence Remarks: Another juvenile snake roadkill on this road - fourth one in the past month or so. Other 3 juveniles were gopher snakes.;; Coordinate Uncertainty in Meters: 5.00000.

San Mateo, California: 37.368233, -122.233688: : 3/23/2026: Eric B: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Washington, Utah: 37.29571, -113.006161: : 5/25/2026: Emma Tsai: 25 May 2026 ; Coordinate Uncertainty in Meters: 7813.00000.

Santa Clara, California: 37.205128, -121.879837: : 5/9/2026: jchris21: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.285588, -122.036971: : 5/17/2026: Parsa Fard: 17 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.243254, -122.198238: : 5/17/2026: Parsa Fard: 17 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.354829, -122.169005: : 5/17/2026: Parsa Fard: 17 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.33299, -122.070542: : 5/24/2026: Parsa Fard: 24 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.270433, -122.191682: : 4/16/2026: Parsa Fard: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.314001, -122.006871: : 4/16/2026: Parsa Fard: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.254811, -122.098895: : 5/30/2026: Simon Scarpetta: 30 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.210995, -121.791938: : 4/14/2026: katherinef2: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Santa Clara, California: 37.218108, -121.746978: : 4/19/2026: Annette Herz: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Mateo, California: 37.321468, -122.198519: : 4/18/2026: emilyjb2: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Washington, Utah: 37.251216, -112.976533: : 4/21/2026: Eric Camacho: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 6037.00000.

Occurrence Remarks: Neonate NorPac rattler; rather unexpected spotting, considering rainy conditions less than an hour before the find on this *mostly* cloudy day.; Coordinate Uncertainty in Meters: 4.00000.

Madera, California: 37.255794, -119.503113: : 4/20/2026: swandling: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.263685, -122.022637: : 10/31/2025: Parsa Fard: 31 Oct 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.248053, -122.093899: : 10/24/2025: Parsa Fard: 24 Oct 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.250811, -122.074845: : 10/19/2025: Parsa Fard: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Stanislaus, California: 37.329067, -121.170363: : 5/19/2026: Ryan Donnelly: 19 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Santa Clara, California: 37.335297, -122.09055: : 5/17/2026: Koleman Chang: 17 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.323877, -122.064714: : 5/24/2026: youngbill: 24 May 2026 ; Coordinate Uncertainty in Meters: 310.00000.

San Mateo, California: 37.224551, -122.15537: : 5/24/2026: fynneus-linnaeus: 24 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.20468, -121.791175: : 5/21/2026: dayavivek: 21 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.204688, -121.791145: : 5/21/2026: dayavivek: 21 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Clara, California: 37.351483, -122.160561: : 5/26/2026: keeshkid: 26 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Santa Clara, California: 37.236245, -122.069328: : 5/27/2026: John Scharpen: 27 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Mateo, California: 37.305398, -122.199823: : 5/27/2026: Brooke J.: 27 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.331, -122.107686: : 5/13/2026: Lew Kurtz: 13 May 2026 ; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 1848766382; Occurrence Remarks: DOR juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1898781564; Occurrence Remarks: Watch where you put your feet, everyone!;; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.33028, -122.092614: : 9/14/2025: wessnake: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.218863, -121.763397: : 7/12/2025: Bethany Daniel: 12 Jul 2025 ; Coordinate Uncertainty in Meters: 14.00000.

San Mateo, California: 37.369278, -122.223464: : 7/12/2025: Kelly Strickland: 12 Jul 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: this observation is part of an ongoing study documenting the newt roadkill problem around Lexington Reservoir. Please join our regular surveys - send me a message if youre interested, or click here to find out more - https://www.bioblitz.club/newts; Coordinate Uncertainty in Meters: 3.00000.

Santa Cruz, California: 37.195605, -122.146202: : 3/2/2026: James Maughn: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Santa Clara, California: 37.237852, -122.069331: : 3/5/2026: John Scharpen: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Clara, California: 37.1987, -121.873663: : 3/7/2026: guraffe: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.341199, -122.125876: : 2/28/2026: oamisua: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 349.00000.

Santa Clara, California: 37.220234, -121.801711: : 3/9/2026: lightandstorm: 9 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Unfortunately looked deceased. In the street on a road leading to Rancho San Antonio County Park and right up against a curb that pit probably couldnΓÇÖt navigate in time while crossing.; Coordinate Uncertainty in Meters: 8.00000.

Santa Clara, California: 37.212272, -121.71939: : 3/13/2026: sam: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: awesome!!! ~4ft long.; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.212267, -121.719353: : 3/13/2026: Pat P: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.203678, -121.81212: : 3/14/2026: Matthew Dodder: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.307184, -122.175072: : 3/15/2026: bczerwin: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 39.00000.

Santa Clara, California: 37.340791, -122.02335: : 3/15/2026: usernameforinaturalist: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.359188, -122.246674: : 3/15/2026: nancyafeder: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.331197, -122.115139: : 3/15/2026: Erika Brown: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.346172, -122.241347: : 4/12/2026: Christin New: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.315905, -122.160179: : 10/13/2024: Annette Herz: 13 Oct 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.203145, -121.8751: : 4/29/2026: desieme: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: About 8ΓÇ¥ long; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.216889, -121.764064: : 5/1/2026: Adam: 1 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.317447, -122.19648: : 4/29/2026: acasbara: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.379726, -122.177869: : 5/3/2026: muccamoe: 3 May 2026 ; Coordinate Uncertainty in Meters: 317.00000.

Santa Clara, California: 37.236325, -122.069078: : 5/6/2026: John Scharpen: 6 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Santa Clara, California: 37.378536, -122.183931: : 5/6/2026: Sarah Wang: 6 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.225947, -122.05333: : 5/7/2026: John Scharpen: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.234601, -121.763562: : 5/8/2026: James Maughn: 8 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.211495, -121.887695: : 5/10/2026: blatbro: 10 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.322736, -121.701555: : 5/10/2026: Anne Parsons: 10 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Cruz, California: 37.203032, -122.072477: : 3/5/2026: Parsa Fard: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.338055, -121.71795: : 3/29/2026: Annette: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Santa Clara, California: 37.364322, -122.191528: : 3/30/2026: anthonyngo99: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 103.00000.

San Mateo, California: 37.365508, -122.23838: : 3/28/2026: K. Hathaway: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.347425, -122.126815: : 4/3/2026: dmkmjs: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.231008, -121.927785: : 3/23/2026: sam: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.328738, -121.70568: : 3/25/2026: Grant Terrell: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Santa Clara, California: 37.353703, -122.15863: : 3/24/2026: taralee: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Mateo, California: 37.35208, -122.243492: : 3/18/2026: Christin New: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.380016, -121.72887: : 4/19/2025: Guillermo Roque: 19 Apr 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Los Trancos Open Space Preserve, San Mateo County, California; Coordinate Uncertainty in Meters: 116.00000.

Occurrence Remarks: There are two snakes; larger one on smaller one.; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.293103, -122.088653: : 9/17/2025: Claire Elliott: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Snake; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: So funny story- the snake saw me and got spooked so it fled down a hole it was a little too big for and got stuck. I used my snake hook to break around the opening of the hole to give it room to wiggle out. After a few minutes, the snake was able to back up and free itself. He definitely did not seem grateful for the help (in fact, he was even more pissed off. But I would probably be pretty grumpy too after that); Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.189292, -121.834153: : 9/26/2025: capogirls: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.211357, -121.891679: : 5/12/2026: Yanira Reyes: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: 4+ ft long Fully grown adult; patient and even-tempered. The activity in the third photo was the limit of the physical interaction.; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.350178, -122.237642: : 5/14/2026: Christin New: 14 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Santa Clara, California: 37.347593, -121.749775: : 5/17/2026: fexcad: 17 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.211087, -121.80072: : 3/15/2026: Elliot Liu: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Santa Clara, California: 37.191703, -121.520897: : 3/16/2026: taylormcintire: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.204137, -121.81347: : 3/18/2026: nosillaronnoc: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.204146, -121.813458: : 3/18/2026: gdrbirder: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.231343, -122.175919: : 3/18/2026: Oonagh Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.250036, -122.11309: : 3/18/2026: Oonagh Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.349301, -122.011024: : 3/18/2026: Oonagh Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.328588, -122.131777: : 3/18/2026: Oonagh Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.309887, -122.142195: : 3/18/2026: Jeremiah Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.311034, -122.094021: : 3/18/2026: Jeremiah Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.348893, -122.186287: : 3/18/2026: Jeremiah Degenhardt: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.193438, -121.867837: : 3/21/2026: maggieleiker: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.333078, -122.096136: : 3/21/2026: starlingfish: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.212688, -121.936806: : 3/22/2026: danmelin: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.332278, -122.095428: : 3/24/2026: starlingfish: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.290532, -122.057043: : 3/17/2026: Stacie Wolny: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.31145, -122.227195: : 3/26/2026: Jake Wolfe: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.369503, -122.183862: : 3/29/2026: fieldjay: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Santa Clara, California: 37.193092, -121.468392: : 3/27/2026: gnar_biologist: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.327178, -122.135125: : 3/30/2026: Nancy Weintraub: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.212033, -121.77915: : 3/30/2026: Pat P: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.364392, -122.191389: : 3/30/2026: kaebis: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.327273, -122.080921: : 2/26/2026: Parsa Fard: 26 Feb 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.238545, -122.069419: : 3/30/2026: John Scharpen: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 21.00000.

Santa Clara, California: 37.379983, -121.739953: : 4/1/2026: Stella≡ƒîº∩╕Å≡ƒî┐≡ƒî║: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 26.00000.

Santa Clara, California: 37.231261, -121.654038: : 4/8/2026: usernameforinaturalist: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.337267, -122.111758: : 3/30/2026: Lew Kurtz: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Washington, Utah: 37.25493, -112.961961: : 4/8/2026: charmz: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 477.00000.

Santa Clara, California: 37.204063, -121.806292: : 3/6/2026: mattytut7: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 314.00000.

San Mateo, California: 37.346058, -122.24153: : 4/12/2026: Christin New: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.376912, -122.182013: : 10/1/2025: raybread: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Washington, Utah: 37.252036, -112.959502: : 10/3/2025: Sol Matthew Pombuena: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.243783, -121.758628: : 6/9/2025: kg143: 9 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.377411, -122.17843: : 3/25/2025: nuthatch4me: 25 Mar 2025 ; Coordinate Uncertainty in Meters: 386.00000.

Santa Clara, California: 37.255695, -121.739218: : 6/24/2025: Parsa Fard: 24 Jun 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.309751, -121.608238: : 7/25/2025: Parsa Fard: 25 Jul 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.2329, -121.751: : 7/3/2025: Vijayasimha Kadamby: 3 Jul 2025 ; Coordinate Uncertainty in Meters: 11.10000.

San Mateo, California: 37.368313, -122.232558: : 7/21/2025: sjellysj: 21 Jul 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Santa Clara, California: 37.239353, -122.069411: : 6/3/2026: John Scharpen: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Santa Clara, California: 37.336636, -122.144784: : 6/4/2026: dmkmjs: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 174.00000.

Santa Clara, California: 37.239072, -122.068969: : 6/4/2026: John Scharpen: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Madera, California: 37.308322, -119.637122: : 6/6/2026: shenrose: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Mateo, California: 37.352238, -122.210839: : 6/5/2026: carsonfam: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 102.00000.

Occurrence Remarks: Hiding in a ground squirrels burrow.

Santa Clara, California: 37.31279, -121.74209: : 6/9/2026: usernameforinaturalist: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: Came back the next day to see how it was getting on shedding etc and another was on top of it.

San Mateo, California: 37.325313, -122.205628: : 6/11/2026: wyattherp: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Cruz, California: 37.227651, -122.105386: : 6/11/2026: Pranav Kirti: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.29272, -122.119224: : 6/13/2026: Snakeyherper: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.25467, -122.015452: : 6/13/2026: usernameforinaturalist: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.356967, -122.165409: : 6/9/2026: Simon Scarpetta: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.345947, -122.241622: : 6/14/2026: Christin New: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Santa Clara, California: 37.236397, -122.069267: : 6/15/2026: John Scharpen: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.363445, -122.17447: : 7/5/2026: LizardFishMan: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Santa Clara, California: 37.375437, -122.181258: : 6/16/2026: Chuck Wilson: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.301641, -122.08046: : 6/14/2026: Rayyan Syed Ibrahim: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.298595, -122.077255: : 6/19/2026: mbrav: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 1201.00000.

Occurrence Remarks: Will add better photo; Coordinate Uncertainty in Meters: 28417.00000.

Washington, Utah: 37.276703, -112.923121: : 6/19/2026: Ellie Hennessy: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: Juvenile, ~10 inches, injured but still able to move tail; Coordinate Uncertainty in Meters: 15.00000.

San Mateo, California: 37.363708, -122.244483: : 7/9/2026: andreareid: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Madera, California: 37.346752, -119.741409: : 7/22/2026: jmitchell97: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Santa Clara, California: 37.214428, -121.795303: : 6/25/2026: katherinef2: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Mateo, California: 37.312655, -122.187988: : 6/25/2026: rappman: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Washington, Utah: 37.30267, -113.062308: : 6/25/2026: gabeloscalzo: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Photo taken by dad; Coordinate Uncertainty in Meters: 3.00000.

San Mateo, California: 37.298866, -122.192714: : 6/28/2026: jennasea: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: Intentionally offset.; Coordinate Uncertainty in Meters: 31.00000.

Washington, Utah: 37.208741, -113.544991: : 6/20/2026: california_every_reptile: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Washington, Utah: 37.199675, -113.391706: : 10/10/2025: Tanya Hales: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 85.00000.

Kane, Utah: 37.337916, -112.820181: : 10/7/2025: Kenzie Anderson-Bell: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Washington, Utah: 37.201478, -112.975005: : 10/7/2025: hedgely: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Cruz, California: 37.209721, -122.161308: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Cruz, California: 37.207654, -122.161867: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.235038, -122.021721: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.229119, -122.192609: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.301053, -122.190026: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.278145, -122.198427: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.339891, -122.044805: : 9/19/2025: Parsa Fard: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: The largest one weve seen in this area. Looked fairly thick as well; Coordinate Uncertainty in Meters: 42.00000.

San Mateo, California: 37.345945, -122.242247: : 10/11/2025: Christin New: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.301006, -122.120956: : 3/30/2026: jazzysnazzy123: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1315044632; Occurrence Remarks: Gopher snake coiled up in a hole along the trail. Im assuming that this is a gopher snake.;; Coordinate Uncertainty in Meters: 7610.00000.

GBIFID: 910490544; Occurrence Remarks: This rattler, about a yard long, was sunning itself on the Meadowlark trail, but moved under cover when it noticed us coming.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3455471063; Occurrence Remarks: High temperature was around 60 F, which was apparently warm enough for this snake to be out;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 2311267063; Occurrence Remarks: Maybe two in courtship? Saw them for a couple days in the same area, then havent seen them for the last couple days.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3747357371; Occurrence Remarks: Small, about 18 inches long;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3759247430; Occurrence Remarks: Russian Ridge;; Coordinate Uncertainty in Meters: 4806.00000.

GBIFID: 1838369787; Occurrence Remarks: Along exit from Birch Hollow;; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.279406, -122.039904: : 4/8/2022: Jeremiah Degenhardt: 8 Apr 2022 :
GBIFID: 4936161930; Occurrence Remarks: DOR. Looks like the park ranger may have accidentally gotten this one;; Coordinate Uncertainty in Meters: 28417.00000.

Santa Clara, California: 37.336301, -122.099023: : 4/8/2022: Jeremiah Degenhardt: 8 Apr 2022 :

Santa Clara, California: 37.380039, -121.728742: : 4/9/2022: mountainlionmiguel: 9 Apr 2022 :

GBIFID: 1839270204; Occurrence Remarks: Young Northern Pacific Rattler (new born?) on the trail in Joseph D. Grant Park.;; Coordinate Uncertainty in Meters: 194.00000.

Santa Clara, California: 37.361348, -122.187014: : 5/6/2022: Jeremiah Degenhardt: 6 May 2022 :

GBIFID: 3784683783; Occurrence Remarks: Males have longer tails rattlesnake;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3785012312; Occurrence Remarks: was under a metal sheet;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3784838471; Occurrence Remarks: was under a metal sheet;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3784847590; Occurrence Remarks: was under a metal sheet;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3784645993; Occurrence Remarks: were under a metal sheet and were so warm that they moved and rattled immediately. I did not even have time to fully lift the metal sheet before they reacted to me.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3802322792; Occurrence Remarks: I first noticed this snake because a ground squirrel was frozen and watching it. It was on the road just around the bend from the baby goats. I would guess it was 12-15 long and a little thinner than my pinkie finger at the neck.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3802432662; Occurrence Remarks: froze the night before;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3802686769; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/118332002 (only one shown). under a metal sheet. froze the night before;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3802395672; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/118332002. under a metal sheet. were warmed up and ready to go;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3802286655; Occurrence Remarks: 2 individuals under the same metal sheet. froze the night before;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3802668189; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/118332001. under a metal sheet. froze the night before;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802310638; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/118332001. under a metal sheet;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3802363014; Occurrence Remarks: Dead snake on road/trail, some decomposition.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3859129628; Occurrence Remarks: Rancho San Antonio;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1841306352; Occurrence Remarks: Seen at the same spot in the dirt next to the sidewalk several days in a row (by me, April 26, 30, May 1) . The snake is typically coiled up and not moving. Temperature in the mid 60s F.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859646549; Occurrence Remarks: 1.5 - 2ΓÇÖ in length. Once it sensed me, it got a little defensive, but just headed back the way it came while keeping one pit on me.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859478558; Occurrence Remarks: About 1.5ΓÇÖ in length. Gently escorted off the trail. It was completely calm, moving along slowly on its belly muscles.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1847437953; Occurrence Remarks: Found near the pavement, slithered into the grass and bushes as the 3 of us approached. Baby, around a foot long Video: Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3858635557; Occurrence Remarks: Dying;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 1847496397; Occurrence Remarks: This ridiculous beast leapt out of the grass, missed striking my brother, and tumbled onto the trail with its mouth open. When it regained its composure it casually slithered into the bushes as if it had meant to clumsily flop onto its back. Nice try rattlesnake. YouΓÇÖre not fooling anyone.;; Coordinate Uncertainty in Meters: 179.00000.

GBIFID: 3873708859; Occurrence Remarks: About 2 feet long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3881479805; Occurrence Remarks: Not sure, see some banding. Could be a king snake as well. DidnΓÇÖt see rattle but it can have fallen off. Fairly large snake.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 3881938401; Occurrence Remarks: Sign only, print of a very wide bodied snake moving across the trail. The track has been tred on by hikers and bikers, so it is at least several hours old. The 3rd photo is of another, nearby, smaller snake track.;; Coordinate Uncertainty in Meters: 385.00000.

GBIFID: 1088918534; Occurrence Remarks: First rattler of the year!;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 1848805462; Occurrence Remarks: Spicy boy;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3903343075; Occurrence Remarks: Found dead in arroyo.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 1850956751; Occurrence Remarks: Ten inch juvenile crossing the road on a 70 degree night.;; Coordinate Uncertainty in Meters: 16511.00000.

GBIFID: 3902874949; Occurrence Remarks: Freshly hit;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 3912249731; Occurrence Remarks: My first rattlesnake!;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3915600918; Occurrence Remarks: 2 1/2 feet long. Had 8 segments in the rattle, first segment black.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3947226649; Occurrence Remarks: Very small and pretty.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3966572257; Occurrence Remarks: Despite it being a bit chilly, this snake gave us a good rattle as they moved away from the rude humans.;; Coordinate Uncertainty in Meters: 456.00000.

San Mateo, California: 37.363853, -122.215135: : 3/19/2026: andreareid: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 214.00000.

GBIFID: 4018159816; Occurrence Remarks: Young one, very torpid, right next to the trail in the middle of a very rainy, cool period, might have gotten flushed from their den?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4029045111; Occurrence Remarks: With a california poppy ≡ƒî╕;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1890060872; Occurrence Remarks: Western rattlesnake, Crotalus oreganus -- this drop-dead gorgeous (recently shed, Im sure!) large rattlesnake was going along parallel to a very busy walking path (Riverside Walk, Zion National Park) with lots of tourists. The amazing thing to me was how well behaved the humans were!! When we arrived there were already probably 15 people at the side of the trail, just maybe 6 feet from what must have been a huge, scary, dangerous snake to many of them, and yet nobody was attempting to drive the snake off, nor to frantically snatch their children away from the trailside viewing line. One of those rare moments when you have some faith restored that people can be sane and decent on occasion, even in groups. The snake was neither hurrying/fleeing, nor behaving defensively, so it seems that it was not being bothered by its audience & admirers.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121333562; Occurrence Remarks: Right on the trail, under a root;; Coordinate Uncertainty in Meters: 137.00000.

GBIFID: 1098909665; Occurrence Remarks: Probably oreganus, but couldnt get close enough to see full body;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4121163976; Occurrence Remarks: Northern Pacific Rattlesnake Crotalus oreganus ssp. oreganus;; Coordinate Uncertainty in Meters: 191.00000.

GBIFID: 4133910105; Occurrence Remarks: Rattlesnake trying to swallow a cottontail rabbit.;; Coordinate Uncertainty in Meters: 2959.00000.

GBIFID: 4137996194; Occurrence Remarks: Crossing the trail safely!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4137868164; Occurrence Remarks: Upper Wildcat Canyon Trail - Rancho San Antonio Open Space Preserve, Santa Clara County, California;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1914345358; Occurrence Remarks: About 4 feet long, just meandering across the trail. Some old skin, some new.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 4153439172; Occurrence Remarks: **Looking for ID suggestions on the snake** This snake and lizard were just hanging out. Kept watching to see if the snake would attack, but they stayed like this for a few minutes. IΓÇÖm thinking this is a baby rattlesnake but couldnΓÇÖt get close enough to get a good look at the head and couldnΓÇÖt see a rattler for sure. Any one know what kind of snake it is?;; Coordinate Uncertainty in Meters: 202.00000.

GBIFID: 1932324468; Occurrence Remarks: Deceased juvenile;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4405062638; Occurrence Remarks: On the Wildcat trail at Rancho San Antonio. Was very calm and eventually turned around.;; Coordinate Uncertainty in Meters: 4000.00000.

GBIFID: 4405278841; Occurrence Remarks: In the third photo there is a second snake (upper left) of similar markings. They were twisting rapidly around each other and by the time I got the smart phone out, they had separated, probably detecting my presence.;; Coordinate Uncertainty in Meters: 90.00000.

GBIFID: 4405011190; Occurrence Remarks: In striking pose because my sister startled it (and her) as we walked past.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 4414335661; Occurrence Remarks: Roadkilled, rattle missing - possibly collected as a souvenir? Detail of keeled scales in following images.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4414405772; Occurrence Remarks: My wife took this picture 8-11-23 on a trail near our house. What is a Northern Mojave Rattlesnake doing in Los Altos Hills?;; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.266538, -121.753338: : 3/18/2026: searching4critters: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4421062003; Occurrence Remarks: Caught a large rodent!;; Coordinate Uncertainty in Meters: 1033.00000.

GBIFID: 4424408402; Occurrence Remarks: This was a very long snakeskin at the mouth of a drainage pipe. I would guess it was about 4 ft. or longer.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4430515076; Occurrence Remarks: roadkill;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1135528341; Occurrence Remarks: After a good solid year of nagging Tony tiwane Iwane to see one of these...at last!Magnificent, elusive creature. Heard two this morning but doubled back and finally had success. Thanks Tony.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4507964281; Occurrence Remarks: In the second photo, taken with a 5x cellphone telephoto, I would never have noticed the rattlesnake had I not seen it move into position. Both photos are the same, but the first was cropped to help the AI find and identify.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4512410438; Occurrence Remarks: in-situ. Air temp 46*, wind at 10-15mph, on and off rain, with sun peeking through the clouds on and off;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3079531559; Occurrence Remarks: A very handsome and unusually greenish individual.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 891127146; Occurrence Remarks: Not sure Ive ever found a rattlesnake skin with its head. A cyclist said hed seen live ones a week before, so maybe this was shed by a snake that had just emerged from hibernation.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4847185393; Occurrence Remarks: Almost stepped on this individual that was right on the trail behind a bend; it eventually retreated into the grass.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5153051607; Occurrence Remarks: Quite small;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852826668; Occurrence Remarks: juvenile, second of two seen.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2013752418; Occurrence Remarks: Looks like a rattlesnake to me. It has been resting on our patio for the last hour or so. It has not moved in that time. Public Safety is on the way to help use deal with it.;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 4855355229; Occurrence Remarks: I saved my grandma from stepping on this snake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4863714485; Occurrence Remarks: ??;; Coordinate Uncertainty in Meters: 649.00000.

GBIFID: 4863561909; Occurrence Remarks: Believed to be the same individual as previous observation from April 27th, 2024. Found basking in the same spot.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1901088353; Occurrence Remarks: Found late in afternoon--almost dark on main trail towards the Narrows. It was clearly on its way somewhere. Identifying its formal name would be nice. Update: I changed ID to Great Basin Rattlesnake...from the description, this one seems like an older specimen.;; Coordinate Uncertainty in Meters: 191.00000.

Santa Clara, California: 37.320847, -121.70868: : 5/27/2024: Castillo Vardaro Molecular Ecology Lab: 27 May 2024 :

GBIFID: 4875368949; Occurrence Remarks: Very calm. Looked about 4 feet long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4875594190; Occurrence Remarks: Rattled a warning when we got too close. Quickly went back to its meal when we backed off.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891133565; Occurrence Remarks: Actually two, one on top of the other. Bottom one in the second picture.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4901927595; Occurrence Remarks: Surprised in a basement.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4903944695; Occurrence Remarks: Snake skin, approximately 3-4 ft long. Found between some rocks.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2236916827; Occurrence Remarks: Found this young snake on a path during our hike on Windy hill. does anyone know what species it is?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4120895310; Occurrence Remarks: On the wide path up the hill; maybe half meter long; did not rattle but did threaten before retreating;; Coordinate Uncertainty in Meters: 113.00000.

GBIFID: 4909291216; Occurrence Remarks: Almost perfectly camouflaged among dead leaves beside Razorback Ridge Trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4908383049; Occurrence Remarks: Surprised us up on the peak when we arrived.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4909025328; Occurrence Remarks: On trail near Florence L.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3079553576; Occurrence Remarks: road-killed;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4910984760; Occurrence Remarks: shed owner was rattling in vicinity of rock;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4936697569; Occurrence Remarks: Baby-about a foot long. Spooked from sunning spot and coiled under bushes sniffing me;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4936936345; Occurrence Remarks: Dull olive green morph;; Coordinate Uncertainty in Meters: 358.00000.

GBIFID: 4936141243; Occurrence Remarks: ???;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4946268182; Occurrence Remarks: mom and offspring;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4945771208; Occurrence Remarks: Snake skin;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4946005440; Occurrence Remarks: At least 5 offspring;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4950022875; Occurrence Remarks: Decided to visit this guy again! HeΓÇÖs been living in the same rock pile for a while and itΓÇÖs always nice to see him doing well. Interesting thing was that I actually saw a baby Cali king snake poking his head out of a rock crevice super close to this guy. I really wanted to get a pic of it but he backed his head in and did not come out again after seeing me. Wonder if thereΓÇÖs any baby rattlers nearby heΓÇÖs feeding onΓÇª;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4950271010; Occurrence Remarks: Shed Skin. A large female was nearby under a rock.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4950362983; Occurrence Remarks: This is a picture of a pair of rattlesnakes. The picture is mainly showing the female. This photo was taken outside of Leeds at the Red Cliffs Desert Reserve. It was quite hot and these snakes were hiding under a rock to keep cool. Nearby we also discovered a nice shed from one of them.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4953067134; Occurrence Remarks: Also saw a giant rattlesnake between 4-5 ft but he slithered deep into a rock crevice before I could get my camera out. I was surprised at how silently and quickly a rattlesnake of that size could hide. If I had not heard a slight brush against the grass and looked up I would have never have knew it was there. I also didnΓÇÖt expect a rattlesnake of that size to not rattle and stand its ground but rather to make a quick escape. It really makes me wonder how often herpers miss snakes, especially if one of that size could be that stealthy.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4953125898; Occurrence Remarks: Found the same rattlesnake I wasnΓÇÖt able to take a picture of yesterday! It was very difficult getting my camera to focus on him with all the brush in the way but IΓÇÖd rather have this than no photos. Not super obvious in the pic but this was a decently sized rattlesnake! If I had to guess, IΓÇÖd say it was a little over 4 ft.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4952974770; Occurrence Remarks: Male and female under rock, 85 degrees and partially sunny;; Coordinate Uncertainty in Meters: 9379.00000.

GBIFID: 1227752417; Occurrence Remarks: bulky head. Has a distinctive, intriguing pattern across its body. Did not look like a fully mature snake as it was smaller in size;; Coordinate Uncertainty in Meters: 1846.00000.

Santa Clara, California: 37.357476, -121.672997: : 5/6/2019: Barry Langdon-Lassagne: 6 May 2019 :

GBIFID: 2269215923; Occurrence Remarks: Found by J. Stauss;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4994286714; Occurrence Remarks: This big rattle is still in the same spot I saw it months ago. Maybe it broke off when the animal squeezed under the board?;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4994187601; Occurrence Remarks: Dead rattlesnake under board. Guess the poor guy tried to hide in there and got stuck. Pretty cool that the rattle was still intact!;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 5104741160; Occurrence Remarks: 2 individuals entertwined;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5108220418; Occurrence Remarks: Head in the shadow;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5134665608; Occurrence Remarks: It was a baby snake ≡ƒÉì. It even rateled at us !;; Coordinate Uncertainty in Meters: 71.00000.

GBIFID: 5134585962; Occurrence Remarks: This was a huge rattlesnake - about 3.5 inches in diameter and 3 ft. long. We took a lot of pictures, but then he got irritated with us and started rattling his tail loudly.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153045960; Occurrence Remarks: Battling!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5133667094; Occurrence Remarks: This rattler was dead on the side of the trail; it appears to have been killed in this spot, maybe several days ago. It was really thick!;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5134486098; Occurrence Remarks: Russian Ridge;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5134798803; Occurrence Remarks: Two males wrestling for dominance. The two lay side-by-side for long periods with their heads elevated (photo 4). Every so often, they would surreptitiously cross their bodies (photo 1) and slam each other to the ground while twisting and thrashing (photo 2). The first two photos are stills taken from a video.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 5140173519; Occurrence Remarks: 2 individuals basking together;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 2269314096; Occurrence Remarks: dead on road;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5140656068; Occurrence Remarks: Found by roadside where lots of DOR herps are seen, relocated very close by to prevent it from becoming roadkill;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 5153139623; Occurrence Remarks: Same as https://www.inaturalist.org/observations/279225570;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5153715679; Occurrence Remarks: My mountain bike tire missed its head by inches;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5176576611; Occurrence Remarks: Spotted crossing the road, but turned around and went back where it came from after it saw me.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5176992503; Occurrence Remarks: I think this was the same large snake we saw last time: https://www.inaturalist.org/observations/269381061 We could only see a small part of its back. When it sensed our presense, it slither under the rocks, rattling its tail the whole time. I think it mustve gone underground because we couldnt hear the rattle after a few seconds.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5206151307; Occurrence Remarks: We plan to relocate this snake away from our house. It followed a mouse hole into the garage;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 2294618947; Occurrence Remarks: Juvenile rattle snake, made a rattling sound as it slithered away. Not more than 2 feet long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5217290933; Occurrence Remarks: Photos taken by dad;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5231166262; Occurrence Remarks: 2025-07-09 Skyline Ridge - Northern Pacific Rattlesnake;; Coordinate Uncertainty in Meters: 121.00000.

GBIFID: 5230893687; Occurrence Remarks: It took several minutes for it to decide to go up and around the other side of the tree.;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 5230903288; Occurrence Remarks: Entering a hole (vole?) in the 3rd photo;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1265598741; Occurrence Remarks: Two pairs and a solo.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 891711958; Occurrence Remarks: About 3 feet long; flowed into bushes at a leisurely pace. Did not rattle.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 891711025; Occurrence Remarks: Our third and largest snake of the morning -- a literal snake in the grass.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 1272090146; Occurrence Remarks: OK, this was a bit TOO exciting. I had walked by/over/past the snake; @dpom was following me. She let out an OMG and jumped backwards. I immediately knew what was happening, before even turning around. The Snake rattled its tail before slinking off. By the time I figured out to turn on the camera, the snake was moving into the brush, off the trail. I have part of the body here. The first picture is a close-in tight shot of the body; the second picture is my unaltered original.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2451723277; Occurrence Remarks: On the trail in Fremont Older; young aggressive snake!;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 1291117913; Occurrence Remarks: About 2 long and at least 3 in diameter. Olive-brown rattlesnake with a series of large, dark blotches with uneven white edges. The last few rings at the base of the tail are black. The rattle is a yellowish brown color.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1315061758; Occurrence Remarks: Northern Pacific Rattlesnake I was on trail patrol and bent down to pick up some trash. I heard a buzzing sound, looked up, and locked eyes with this big rattler. It was only about three feet away from my face. Instinctively I jumped back a few feet, snapped this shot and got outta there. Boy, was my adrenaline pumping! That was a close call. (Ewing Trail near Black Mtn Trail Junction);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2609309437; Occurrence Remarks: Someone smashed its head in with a rock. Upon being found it was moved off of the middle of a popular trail. Snake was about 12 and guessed to be young.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453130798; Occurrence Remarks: Heard this guy night before while approaching the same summit outcrops. Basking in the morning sun next day at same rock, this magnificent, thick snake sat still as many of us...gave it room and respect. So, so beautiful.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453136492; Occurrence Remarks: It was a pleasure to see a live adult where Id seen shed skins before.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2611104426; Occurrence Remarks: This little guy was about a foot long crossing Alpine Road near the end or near where it has the junction with Joaquin;; Coordinate Uncertainty in Meters: 5.00000.

Santa Clara, California: 37.333492, -121.70958: : 5/2/2020: Matthew Ian McKim Louder: 2 May 2020 :

GBIFID: 1453188693; Occurrence Remarks: Baby, only one button.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 2626624702; Occurrence Remarks: The rattle is visible in the first (default) picture;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2634599946; Occurrence Remarks: Found this rattlesnake devouring a ground squirrel today. Believe that adult squirrels are typically not prey and have evolved immunity to rattlesnake venom. The squirrel from the pictures, looks like it may have suffered a physical injury prior to being located by the rattlesnake and consumed.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 2641352722; Occurrence Remarks: Baby, ~4 across the whole coil;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2802644706; Occurrence Remarks: Spotted the snake in the middle of a hiking trail. It slithered across without any trouble;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3455247507; Occurrence Remarks: Looks like rattler vertebrae;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 2818735108; Occurrence Remarks: Accuracy of 1 mile. Roadkill; head and tail taken. Partially skinned.;; Coordinate Uncertainty in Meters: 357.00000.

GBIFID: 899947284; Occurrence Remarks: found under a board near the Amos Cabin by the UCSC field class;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 2864671449; Occurrence Remarks: Young, and interestingly dark in color;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500324579; Occurrence Remarks: Spotted near the same location seen a few weeks earlier. Maybe a breeding pair?;; Coordinate Uncertainty in Meters: 2279.00000.

GBIFID: 899961300; Occurrence Remarks: Three adult snakes under log cover. 51F-52F and cloudy.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 899961292; Occurrence Remarks: 2 snakes under artificial cover. 51F-52F and cloudy.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 2898474074; Occurrence Remarks: Baby, about 6, more black and white than brown;; Coordinate Uncertainty in Meters: 245.00000.

GBIFID: 1640036855; Occurrence Remarks: FR 032. Video: https://youtu.be/Itd7wloKDiY;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070275283; Occurrence Remarks: An unseasonably warm day...Rattlesnake season is all year round, now.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3017997095; Occurrence Remarks: Not living.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572341845; Occurrence Remarks: Young; approx 15 long; turned into a hole but follow the tail to rattle for confirmation;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 1572353238; Occurrence Remarks: I walked to the side of the trail to see if the blackberry vines had any ripe blackberries, and I heard this snakes rattle. I tried to take a picture, but my memory was full (why did it happen at the most inopportune time?) So I backed up a couple yards, deleted some old pictures, and went back to the spot where I originally saw the snake. It was still there and still coiled. I couldnt see its markings very well because of the dense shrubbery. Its head was triangular in shape with large white spots behind the ears. It looked mostly gray. I could see the rattle. Im guessing its a northern pacific rattler, because I dont know of any other rattlesnake in this area.;; Coordinate Uncertainty in Meters: 211.00000.

GBIFID: 911495883; Occurrence Remarks: Five in One Location;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3079651128; Occurrence Remarks: Unusual pattern.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1580516396; Occurrence Remarks: This snake was slowly crossing the path. The temperature was in 60s F. It looked wide for its length. My friend C. took this photo. We were mountain biking and had to brake suddenly.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3079832661; Occurrence Remarks: snake skin found under rock;; Coordinate Uncertainty in Meters: 1457.00000.

GBIFID: 3109289981; Occurrence Remarks: Was seeking warmth In the water treatment shed at Black mountain camp. The Ranger came and relocated it.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3109107326; Occurrence Remarks: Is this a baby rattlesnake?;; Coordinate Uncertainty in Meters: 399.00000.

GBIFID: 3112514273; Occurrence Remarks: Lower Hackberry. Dry creek bed.;; Coordinate Uncertainty in Meters: 972.00000.

GBIFID: 3113347065; Occurrence Remarks: loc approx;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3118430456; Occurrence Remarks: Baby rattlesnake escorted off road to safety;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3124782502; Occurrence Remarks: Would like to see opinions about whether this is Northern Pacific, or Western rattlesnake. Snake was basking in center of trail and we walked around it. I expected more greenish tint in n, NP rattlesnake.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 891082254; Occurrence Remarks: Young;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3307201137; Occurrence Remarks: Found by Kiara Hampton.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3307354143; Occurrence Remarks: Very young, only one or two rattles. 8 to 12 inches in length. It was very sluggish. It was clearly trying to suck up some heat from the road. I had to prod it a couple times with a detached headrest from the car to get it moving. Eventually, it came to life and threatened with the cutest little rattle. I managed to chase it off the road. I hope it stayed off the road, because I saw another one about the same age killed up the road a little further.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1024214005; Occurrence Remarks: I found a Northern Pacific Rattlesnake outside its den today. It immediate gave me the business, most likely because it was going into shed (note the white eyes) and slithered into its den. Then lo and behold, there was another rattler (smaller, with a light brown complexion) that had been resting just underneath it! It too soon slithered into the den. Sweet.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3327770556; Occurrence Remarks: Three units on the rattle.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3335403739; Occurrence Remarks: rattlesnake skin;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3355246694; Occurrence Remarks: California Nightsnake;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4120942410; Occurrence Remarks: Although this looked like a beautifully choreographed mating dance, it is actually a form of ritual combat between two males, usually occurring in view of a female--she may have stayed behind the rock out of my sight. It had been going on for nearly 5 minutes when I left.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1831176997; Occurrence Remarks: Two giant rattlers soaking in some rays.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1831176967; Occurrence Remarks: Even a rattler is no match for a seasoned herpetologist. Caught behind bush with the ol pin head on the ground with a stick method.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1831176941; Occurrence Remarks: Rattlesnake in barn!!!;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1831176984; Occurrence Remarks: Inside metal pipe.;; Coordinate Uncertainty in Meters: 6.00000.

Santa Clara, California: 37.341189, -122.148063: : 8/6/2025: dmkmjs: 6 Aug 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Occurrence Remarks: Through the windshield up Mt Hamilton Rd. Turned around on its own and went off to the shoulder. The car in the oncoming lane slowed to see what we were looking at, looked at us with a huge :D face when they realized, and then stopped to also look at the snake and take photos. Nice moment. :); Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.220588, -121.802155: : 8/20/2025: katherinef2: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.288688, -122.082253: : 8/18/2025: aylapersimmon: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 123.00000.

Santa Clara, California: 37.25959, -122.072838: : 8/22/2025: yondertallguy: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.230258, -121.927903: : 8/23/2025: Gina Genduso: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Seen again on July 4, 2026 @ 16:04 PST. Likely the same individual featured in other observations here.; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.237197, -122.069013: : 7/4/2026: cchalms: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 47.00000.

San Mateo, California: 37.373605, -122.311673: : 8/18/2025: Parsa Fard: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: Near the center; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.2911, -122.2511: : 8/20/2025: surfma: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 11.10000.

San Mateo, California: 37.359997, -122.215126: : 8/28/2025: ithyfault: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.226017, -121.796263: : 8/30/2025: joan_molina: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.350133, -122.163086: : 7/8/2026: Oliver E: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Santa Clara, California: 37.36285, -122.162767: : 8/31/2025: Kit Gordon: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 142.00000.

Santa Clara, California: 37.364432, -121.697476: : 6/19/2025: Kate Ruiz-Cox: 19 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.35352, -122.24495: : 7/11/2026: Christin New: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.363712, -122.244478: : 7/9/2026: andreareid: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Sadly, it did not live long after this. As I continued up the hill, I turned around when I heard a car coming, only to see it get run over by the tires. Im sure it was done intentionally.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: The rattle was visible, but not sounding.; Coordinate Uncertainty in Meters: 62.00000.

Washington, Utah: 37.201388, -113.387819: : 7/1/2026: dietrichtyler: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 347.00000.

Occurrence Remarks: RIP :(; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Coal Mine Ridge Preserve. Portola, CA. Came upon snake in trail and it was rattling. We slowly approached and it left trail and coiled in leaves next to trail. Western rattlesnake?; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3760184090; Occurrence Remarks: Juvenile, Dead on Road;; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: Occurrence Remarks: I saw a rattler crossing the trail here a couple days prior: https://www.inaturalist.org/observations/302243006, so when I returned to hike a few more of the trails, I started looking around where Id seen it and saw this skin at the edge of the brush. I figured it was an older one and not necessarily related to the one Id seen. I didnt think the snake was still around, but still took the precaution of using a long stick to pull it out from behind the weeds. Something did rattle at me as I was trying to get another piece out, so I left the tail end under there. Annotated as Alive, based on hearing rattle.; Coordinate Uncertainty in Meters: 1.00000.

Occurrence Remarks: Occurrence Remarks: Also photographed the tracks. I guess snake tracks are nearly impossible to ID but it gets a lot easier when the snake is seen making them. I found a molt in this area when I returned to hike some more of these trails a couple days later. https://www.inaturalist.org/observations/302243026; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Occurrence Remarks: Hes not moving, which means heading back up the trail. ≡ƒñ¿; Coordinate Uncertainty in Meters: 16.00000.

Occurrence Remarks: Occurrence Remarks: Its really hard to see, but the rattle was really loud.; Coordinate Uncertainty in Meters: 822.00000.

Occurrence Remarks: Occurrence Remarks: This guy scared the life out of me. It was hidden behind a yellow star-thistle shrub on the side of the trail and I didnt see it until it was already curled up and rattling its tail.; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.386581, -122.173903: : 10/26/2025: Karen Horwitz: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Joaquin, California: 37.628667, -121.523658: : 10/26/2025: spadefeet: 26 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.407324, -122.237535: : 10/7/2025: Michael Long: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Alameda, California: 37.587052, -121.702047: : 10/14/2025: gnarlyshields: 14 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.475237, -122.284063: : 10/15/2025: andreareid: 15 Oct 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Santa Clara, California: 37.470284, -121.633522: : 10/19/2025: Adam Aslam: 19 Oct 2025 ; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: Found dead; Coordinate Uncertainty in Meters: 3.00000.

Mono, California: 37.517301, -118.792009: : 8/6/2025: ryankanderson: 6 Aug 2025 ; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: Roadkill

Santa Clara, California: 37.440095, -121.872728: : 7/26/2026: ialatham4: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.576027, -121.68652: : 4/18/2025: Guillermo Roque: 18 Apr 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.649292, -122.04048: : 5/9/2024: jcmorri81: 9 May 2024 ; Coordinate Uncertainty in Meters: 18.00000.

Occurrence Remarks: big fella, over 3 ft long; Coordinate Uncertainty in Meters: 545.00000.

Occurrence Remarks: Juvenile - curled up (asleep?) The curled snake could fit in the palm of my hand.; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.47608, -122.283242: : 7/2/2026: scoparium: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3759237058; Occurrence Remarks: Recently hit on road;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3986071045; Occurrence Remarks: Struck by car along dirt road;; Coordinate Uncertainty in Meters: 2.00000.

Santa Clara, California: 37.382713, -122.176728: : 4/30/2026: Anil G: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4133904404; Occurrence Remarks: at least 4 feet and very dark in color;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3873224383; Occurrence Remarks: Pacific rattlesnake;; Coordinate Uncertainty in Meters: 3.00000.

San Mateo, California: 37.46717, -122.289008: : 10/8/2025: sjellysj: 8 Oct 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Alameda, California: 37.623508, -121.756381: : 7/17/2025: jayjt: 17 Jul 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859849049; Occurrence Remarks: Love it when they flatten their sides to absorb maximum sun energy!;; Coordinate Uncertainty in Meters: 28359.00000.

San Mateo, California: 37.40314, -122.232507: : 4/27/2026: Louisa Brody: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 869.00000.

Santa Clara, California: 37.389745, -121.732763: : 5/31/2026: nyguy: 31 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Mateo, California: 37.475276, -122.284786: : 5/27/2026: otavas: 27 May 2026 ; Coordinate Uncertainty in Meters: 44.00000.

Santa Clara, California: 37.385117, -122.037865: : 4/23/2026: Parsa Fard: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.565431, -122.231224: : 4/13/2026: Simon Scarpetta: 13 Apr 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Santa Clara, California: 37.459719, -121.934484: : 4/18/2026: Simon Scarpetta: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

San Joaquin, California: 37.692759, -121.486781: : 5/16/2026: lachesislover: 16 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: I didnt press my luck getting any closer.; Coordinate Uncertainty in Meters: 54.00000.

Occurrence Remarks: These are screenshots from a video I took so apologies for the quality. Seemed like a juvenile; I counted three or four segments to the rattle. Images: 1) unmarked image of head and body. 2) image with head circled 3) image with head circled, as well as outline of body marked and circled 4) image with what appears to be the rattle circled; Coordinate Uncertainty in Meters: 71.00000.

Santa Clara, California: 37.396163, -121.799858: : 4/19/2026: ebessler: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Alameda, California: 37.603992, -121.720275: : 4/19/2026: brightwulf: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.548275, -121.840745: : 4/19/2026: phenry64: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Dead on road DOR; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Picture from daughter; Coordinate Uncertainty in Meters: 36865.00000.

Alameda, California: 37.510403, -121.828712: : 4/25/2026: Rebecca Tarvin: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.514195, -121.830567: : 4/25/2026: johnwmyles: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Alameda, California: 37.514163, -121.830672: : 4/24/2026: Rebecca Tarvin: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Alameda, California: 37.514133, -121.830488: : 4/25/2026: yichen_g: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: Right next to trail, but no rattling to warn us. Took a quick pic as we walked past; Coordinate Uncertainty in Meters: 7.00000.

Santa Clara, California: 37.384237, -122.17505: : 11/2/2025: sjellysj: 2 Nov 2025 ; Coordinate Uncertainty in Meters: 9.00000.

San Mateo, California: 37.402786, -122.223506: : 5/17/2026: scoparium: 17 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.398092, -121.797256: : 5/17/2026: swings: 17 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Small individual, approximately 3.5-4 inch across curled up. Discovered by another person on the trail.; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.638317, -121.77652: : 5/19/2026: brightwulf: 19 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Will add a few more photos after I bring it to its new home up in the rocks...; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: CarolΓÇÖs photo Snake under a artemisia (sagebrush) in a little ΓÇ£artemisia forestΓÇ¥. Rattled as we disturbed its slumber as a warning but not aggressive.; Coordinate Uncertainty in Meters: 1041.00000.

San Mateo, California: 37.529499, -122.362598: : 5/20/2026: treyaviles7: 20 May 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Alameda, California: 37.693108, -121.592012: : 5/20/2026: Jude Magann: 20 May 2026 ; Coordinate Uncertainty in Meters: 41.00000.

Alameda, California: 37.693192, -121.59205: : 5/20/2026: Jude Magann: 20 May 2026 ; Coordinate Uncertainty in Meters: 49.00000.

San Mateo, California: 37.500423, -122.295644: : 5/15/2026: mvolovik27: 15 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Garfield, Utah: 37.620661, -112.163731: : 5/23/2026: cdwannabe: 23 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.559652, -121.860397: : 5/23/2026: Jude Magann: 23 May 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Occurrence Remarks: Went looking for pyros but found a Great Basin Rattlesnake doing its best sidewinder impression (last photo in situ); Coordinate Uncertainty in Meters: 28388.00000.

Santa Clara, California: 37.382025, -122.181618: : 5/24/2026: fynneus-linnaeus: 24 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Mariposa, California: 37.555756, -119.626115: : 5/13/2026: Erik Varness: 13 May 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Washington, Utah: 37.431557, -113.203506: : 5/28/2026: Wyatt Ward: 28 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: This was weird. Flipped a dead juvenile Lute under a 40+ pound rock. I wonder if it crawled under and got stuck and eventually died there. Weird.; Coordinate Uncertainty in Meters: 86.00000.

San Mateo, California: 37.50018, -122.306603: : 5/18/2026: Craig Rosa: 18 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Mariposa, California: 37.40347, -120.094401: : 5/31/2026: Sean Werle: 31 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3858581201; Occurrence Remarks: Pretty skinny. It had just crossed the trail and was crawling up this rock when we found it.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4014975108; Occurrence Remarks: Sorry for the awful picture, but this was a small rattlesnake curled in the grass. I tried to snap a photo with binoculars as to not disturb it. It was very hot that day and it was curled in the shade of a large oak.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3760209817; Occurrence Remarks: only live snake encountered on (and moved off) the road, among at least 7 dead adults;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1838358830; Occurrence Remarks: Photo by Scott Gould. Lives in hollow of old power pole;; Coordinate Uncertainty in Meters: 52.00000.

Alameda, California: 37.508505, -121.826602: : 4/7/2025: Charlie L: 7 Apr 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.387488, -121.718528: : 2/28/2026: Joe Miller: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Small (young) rattlesnake on Franciscan Trail between Old Stage and Edgewood Trails. Only one rattle.; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: Two snakes! Maybe have a home under the boulder.; Coordinate Uncertainty in Meters: 20.00000.

San Mateo, California: 37.472217, -122.283128: : 3/7/2026: Townscapes: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Alameda, California: 37.578106, -121.690508: : 3/14/2026: shanec97: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: First spicy garden noodle of the year. Safely relocated to a better location nearby.; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.384433, -122.174545: : 10/7/2025: emmashelton: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 10.00000.

San Mateo, California: 37.473388, -122.243151: : 4/28/2026: Jessica Carver: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Mariposa, California: 37.557124, -119.625598: : 4/6/2026: Marisol Sanchez: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 1390.00000.

San Mateo, California: 37.399825, -122.22747: : 4/27/2026: Rebecca Johnson: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Clara, California: 37.386349, -122.174988: : 4/29/2026: Helen Marquis: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Roadkill. Lots of trucks on this part of the trail this day for tree-trimming and brush clearing. CouldnΓÇÖt have been dead for more than a few hours since I didnΓÇÖt see it while walking in.; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.390753, -122.215928: : 4/29/2026: Serena Myjer: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.477163, -122.283737: : 5/1/2026: cboysen21: 1 May 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Garfield, Utah: 37.569935, -111.46629: : 4/29/2026: guilhemnat: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 5182.00000.

San Mateo, California: 37.405578, -122.240303: : 5/7/2026: Haoning Gong: 7 May 2026 ; Coordinate Uncertainty in Meters: 12.00000.

San Mateo, California: 37.405518, -122.240196: : 5/7/2026: eric_xia: 7 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Clara, California: 37.446915, -121.900344: : 5/9/2026: Snakeyherper: 9 May 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Alameda, California: 37.559744, -121.972203: : 5/9/2026: Snakeyherper: 9 May 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Alameda, California: 37.567745, -121.698045: : 5/8/2026: illiad669s: 8 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Santa Clara, California: 37.397029, -121.798184: : 5/9/2026: soulrebelirie: 9 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.500846, -122.295598: : 5/9/2026: Carl Dobson: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.642344, -121.780958: : 1/31/2026: cow: 31 Jan 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.642396, -121.780944: : 1/31/2026: lie-lie: 31 Jan 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.575778, -121.683197: : 4/10/2026: johnwmyles: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Santa Clara, California: 37.39793, -121.797325: : 3/26/2026: zibozzb: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Alameda, California: 37.512136, -121.827369: : 4/24/2026: Rebecca Tarvin: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 2226.00000.

Santa Clara, California: 37.388672, -122.182808: : 5/4/2025: Annette Herz: 4 May 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Observed in what seems to be some form of courtship if not the act. About 12 other rattlesnakes seen within the nearby vicinity.; Coordinate Uncertainty in Meters: 11.10000.

Stanislaus, California: 37.43582, -121.322372: : 5/1/2025: Sam Testa, III: 1 May 2025 ; Coordinate Uncertainty in Meters: 10.00000.

San Mateo, California: 37.40425, -122.24053: : 9/10/2025: spadefeet: 10 Sep 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Alameda, California: 37.623894, -121.737737: : 9/23/2025: kgxyldlife: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

San Mateo, California: 37.47795, -122.284578: : 9/26/2025: susandn: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Alameda, California: 37.574735, -121.687979: : 9/27/2025: josharmo: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.616272, -121.726608: : 8/8/2025: jayjt: 8 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.638437, -121.789763: : 5/11/2026: aanya: 11 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.564787, -121.785355: : 5/10/2026: bloober: 10 May 2026 ; Coordinate Uncertainty in Meters: 4251.00000.

San Mateo, California: 37.382598, -122.372121: : 5/14/2026: wyattherp: 14 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Occurrence Remarks: rattling; being sought after by park rangers; Coordinate Uncertainty in Meters: 0.11000.

San Mateo, California: 37.404767, -122.240953: : 5/14/2026: karenhurst: 14 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.617739, -122.0197: : 5/15/2026: Idontneednostinkinname: 15 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Mateo, California: 37.394042, -122.218328: : 5/16/2026: Laurel J. Ramseyer: 16 May 2026 ; Coordinate Uncertainty in Meters: 157.00000.

Santa Clara, California: 37.38497, -121.777678: : 5/17/2026: fexcad: 17 May 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

Garfield, Utah: 37.618787, -112.161091: : 5/15/2026: Erin Creekmur: 15 May 2026 ; Coordinate Uncertainty in Meters: 39.00000.

Alameda, California: 37.60645, -121.671378: : 3/16/2026: Jude Magann: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Santa Clara, California: 37.387192, -122.174025: : 3/16/2026: Serena Myjer: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: This is my first observation of the rattlesnake this year! It was thrilling to see it in March! This juvenile rattlesnake was sunbathing on a gravel trail path; once it sensed my presence, it slithered away into the grass!; Coordinate Uncertainty in Meters: 5.00000.

Alameda, California: 37.578998, -121.688463: : 3/18/2026: shanec97: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: This juvenile rattlesnake was resting on a trail in the shadeΓÇª; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: A juvenile: a third individual, observed in a dayΓÇª; Coordinate Uncertainty in Meters: 9.00000.

Santa Clara, California: 37.396853, -121.797658: : 3/21/2026: Paloma: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.613178, -121.686966: : 3/21/2026: Richard Hasegawa: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.587008, -121.697256: : 3/21/2026: cdivers: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Theres a little bit of skin left (last photo), but I cant see much of a pattern.; Coordinate Uncertainty in Meters: 1.00000.

Mariposa, California: 37.497437, -120.044961: : 3/24/2026: jamesthegeologist: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.58613, -121.885249: : 3/24/2026: Stanley: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Alameda, California: 37.575898, -121.687423: : 3/25/2026: shanec97: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.586299, -121.703827: : 3/26/2026: gnarlyshields: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: 14 inchish juvie; Coordinate Uncertainty in Meters: 6.00000.

Alameda, California: 37.593205, -121.718174: : 3/28/2026: T. S. Tan: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Mariposa, California: 37.403142, -120.094502: : 3/28/2026: Sean Werle: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: About 10 inches long; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.572197, -121.69107: : 3/28/2026: josharmo: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Santa Clara, California: 37.394592, -121.818733: : 3/28/2026: Paloma: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Mariposa, California: 37.498438, -120.046967: : 3/27/2026: jamesthegeologist: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Mateo, California: 37.465476, -122.284284: : 3/30/2026: Dawniele: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 2725940.00000.

Occurrence Remarks: super thick; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Had rattleΓÇö for obvious reasons, did not go closer together a pic of it; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Swam into Merced River; Coordinate Uncertainty in Meters: 6.00000.

Alameda, California: 37.584, -121.6921: : 4/4/2026: gnarlyshields: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 111.00000.

Santa Clara, California: 37.3803, -121.728317: : 4/3/2026: Gabriel Fernandez: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Couple feet off Edgewood Trail.; Coordinate Uncertainty in Meters: 20.00000.

San Mateo, California: 37.465638, -122.288624: : 4/5/2026: sandor_in: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Neonate.; Coordinate Uncertainty in Meters: 6.00000.

Mariposa, California: 37.404273, -120.095265: : 4/7/2026: Sean Werle: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Second relocation of the day; Coordinate Uncertainty in Meters: 679.00000.

Santa Clara, California: 37.399413, -121.915636: : 4/8/2026: usernameforinaturalist: 8 Apr 2026 :
Occurrence Remarks: Location approximate; Coordinate Uncertainty in Meters: 28417.00000.

San Mateo, California: 37.40393, -122.243028: : 4/8/2026: karenhurst: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.619689, -121.752621: : 4/10/2026: Jack Baird: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Alameda, California: 37.634388, -121.77043: : 3/23/2026: alexioverland: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Joaquin, California: 37.690739, -121.430666: : 10/2/2025: Adam Aslam: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Occurrence Remarks: Equipment moved in safely with a hook, snake AOR and removed from road safely. One of the smallest NPRs IΓÇÖd ever seen. Super cold. 58 degrees on car therm, sprinkling. Cruised on fresh asphalt.; Coordinate Uncertainty in Meters: 28359.00000.

Mariposa, California: 37.459181, -119.735157: : 7/2/2025: pamelagross: 2 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.459212, -119.735169: : 7/2/2025: pamelagross: 2 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.5133, -121.8314: : 7/6/2025: Guillermo Roque: 6 Jul 2025 ; Coordinate Uncertainty in Meters: 11.10000.

Santa Clara, California: 37.380578, -121.730002: : 6/1/2025: macrocystis: 1 Jun 2025 ; Coordinate Uncertainty in Meters: 218.00000.

Santa Clara, California: 37.380853, -122.178437: : 6/27/2025: Emily Fletcher: 27 Jun 2025 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Observed this rattlesnake slithering under the shade-offering leaves of a milk thistle plant.; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.686196, -121.93626: : 6/2/2026: Jim: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Spotted near the top of the Mines Rd hill leading towards Lake Del Valle in Livermore, CA

San Joaquin, California: 37.642584, -121.540439: : 6/3/2026: Adam Aslam: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.673447, -121.641217: : 6/3/2026: Adam Aslam: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.685322, -121.63533: : 6/5/2026: Jude Magann: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.685363, -121.635292: : 6/5/2026: Jude Magann: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.686883, -121.645088: : 6/5/2026: Jude Magann: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.594467, -121.720812: : 6/7/2026: Ame: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Joaquin, California: 37.64002, -121.548782: : 6/11/2026: Adam Aslam: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.604707, -121.637875: : 6/11/2026: Adam Aslam: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.605512, -121.742122: : 6/11/2026: Adam Aslam: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.637558, -121.70968: : 6/11/2026: sorryforalltheroadkill-weneeddata: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

San Mateo, California: 37.616548, -122.479623: : 6/12/2026: bozenab: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 3225.00000.

Alameda, California: 37.628928, -122.028533: : 7/19/2026: Chris Sulots: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Alameda, California: 37.51328, -121.831889: : 4/25/2025: Guillermo Roque: 25 Apr 2025 ; Coordinate Uncertainty in Meters: 1.11000.

Santa Clara, California: 37.381329, -122.187577: : 6/14/2026: Miriam Sachs Martin: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Stanislaus, California: 37.515824, -120.868948: : 7/21/2026: Luke: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 227.00000.

San Mateo, California: 37.461212, -122.282295: : 6/17/2026: Sandy Bernhard: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Mateo, California: 37.47398, -122.278454: : 6/17/2026: Sally Albert: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 189.00000.

Mariposa, California: 37.470088, -119.910622: : 7/12/2026: Thomas Hair: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Mariposa, California: 37.55523, -119.63025: : 6/24/2026: jbigelow: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.47897, -119.955292: : 6/25/2026: Beth Pratt: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Washington, Utah: 37.438403, -113.191428: : 6/25/2026: ericparry: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Occurrence Remarks: I really thought it might want that tomato pirate, but nooooo...

San Mateo, California: 37.537967, -122.371055: : 7/15/2026: bkplant: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.380342, -122.177658: : 6/29/2026: shanibirds: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 30.00000.

Santa Clara, California: 37.381717, -121.738342: : 6/30/2026: thomasatberkeley: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.381742, -121.738333: : 6/30/2026: Morgan G.: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Weird R eye, rest of body looks fine I donΓÇÖt suspect SFD; Coordinate Uncertainty in Meters: 46.00000.

Alameda, California: 37.519754, -121.822592: : 3/19/2026: Nick Cecchi: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.645528, -121.75318: : 9/30/2025: mirts: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

San Mateo, California: 37.467167, -122.288986: : 10/8/2025: Vicky Stein: 8 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Santa Clara, California: 37.380064, -121.728676: : 4/20/2024: Richard Hasegawa: 20 Apr 2024 ; Coordinate Uncertainty in Meters: 35.00000.

Alameda, California: 37.504623, -121.904833: : 11/1/2025: Theo Summer: 1 Nov 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.686869, -121.613237: : 9/18/2025: Jude Magann: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4936418196; Occurrence Remarks: ┬⌐ John Dittli. Permission to post granted. ~7100 elevation.;; Coordinate Uncertainty in Meters: 458117.00000.

GBIFID: 3416015719; Occurrence Remarks: Neonate. Second neonate not photographed.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 3705647993; Occurrence Remarks: Found 3 rattlesnakes in Edgewood preserve;; Coordinate Uncertainty in Meters: 233.00000.

GBIFID: 3747044215; Occurrence Remarks: It was hugging the trail and I mustΓÇÖve walked right past him.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3759113057; Occurrence Remarks: Relocated further from the house. Didnt have time for a better photo, sorry.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3759576094; Occurrence Remarks: Second one relocated from the same spot in two days.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3759249196; Occurrence Remarks: Crotalus oreganus, commonly known as the (northern) Pacific rattlesnake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3760069406; Occurrence Remarks: Found dead along a dirt road, unfortunately appeared to have been run over by a vehicle.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3759698428; Occurrence Remarks: Two were found around the same general area. One found out and about and the other was found near or under coyote brush. The last two photos are of a diff rattlesnake found burrowing down into a whole, twisting around unable to completely enter. Other observers saw a second rattle snake inside the whole but it looked immobile.;; Coordinate Uncertainty in Meters: 4.00000.

Santa Clara, California: 37.382033, -121.730667: : 4/9/2022: Sabina Lucke Lawrence: 9 Apr 2022 :

GBIFID: 3759732737; Occurrence Remarks: Not rattling. Sunning on a warm rock ( cool daytime temperatures).;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891093216; Occurrence Remarks: The snake was resting across the trail. After we mutually recognized each other, and I had obtained some pictures, I made some loud noises that convinced the snake to start moving. It crawled under the visible root system of a nearby dying California Live Oak, and gave a vigorous rattle to warn me away.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3764135586; Occurrence Remarks: Pic provided by A. Morro;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 1839234501; Occurrence Remarks: was just sitting right in middle of trail and wasnt moving at all and didnt want something to go over it. but it did slide away..;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1839243111; Occurrence Remarks: A juvenile with button.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 3772890677; Occurrence Remarks: Unfortunately run over in our driveway;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3773017040; Occurrence Remarks: found by @chilipossum has a little piece of straw stuck in its head;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3773114285; Occurrence Remarks: Sticking out of a hole near a rocky outcropping, grassland/cow pasture Temp 61F O/N low 39F;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3784953245; Occurrence Remarks: Aww look; our ground squirrels have a friend over to visit :);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3784843467; Occurrence Remarks: Male and female, both basking together outside of a ground squirrel burrow at the edge of the squirrel colony and right by a wooded area. Were already warmed up, and the larger individual slithered down into the burrow soon after being discovered. Were watched for a few minutes by the students of the Spring 2022 California Ecology and Conservation field course.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3784774916; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/117476910;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3784826497; Occurrence Remarks: same individuals as https://www.inaturalist.org/observations/117476910 and https://www.inaturalist.org/observations/117476937;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3784941525; Occurrence Remarks: same snake as seen in https://www.inaturalist.org/observations/117476910 and https://www.inaturalist.org/observations/117476937 and https://www.inaturalist.org/observations/117477044;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802302852; Occurrence Remarks: coiled right outside a ground squirrel burrow on the edge of the squirrel colony. Never so much as flicked its tongue!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802295785; Occurrence Remarks: was found drinking from the pond (photos 1-3). Coiled when threatened, but did not strike or rattle.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3859018742; Occurrence Remarks: Is the broken pattern on the neck unusual?;; Coordinate Uncertainty in Meters: 11632.00000.

GBIFID: 3859713747; Occurrence Remarks: right near the baseball field;; Coordinate Uncertainty in Meters: 159.00000.

GBIFID: 3859189564; Occurrence Remarks: Location approximate;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 1847538966; Occurrence Remarks: Lifer for me! A gorgeous adult settling down under a bush for the night.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3873887759; Occurrence Remarks: 2017-05-25 Rattlesnake on Student Hike at Jasper Ridge;; Coordinate Uncertainty in Meters: 1268.00000.

GBIFID: 3874079804; Occurrence Remarks: 2019-03-18 Jasper Ridge - Rattlesnake - Half in / Half ouf of Log near Trail / Gate Between Station and Trail to Dam;; Coordinate Uncertainty in Meters: 1046.00000.

GBIFID: 3873075447; Occurrence Remarks: 2020-03-12 Jasper Ridge - Northern Pacific Rattlesnake;; Coordinate Uncertainty in Meters: 1007.00000.

GBIFID: 4936065839; Occurrence Remarks: ┬⌐ John Dittli c/o Leslie Goethals Dittli. Permission to post granted. ~7100 elevation. Great Basin Rattlesnakes engaged in combat dance. These were the 2 biggest & most faded rattlesnakes we have seen at this location. The bigger snake with the scar on his back was the victor, the other snake slithered away when they were done. The snake with the scar on his back spent almost a week in the rocks with a much smaller rattlesnake, most likely the female. :-);; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4936354739; Occurrence Remarks: ┬⌐ John Dittli c/o Leslie Goethals Dittli. Permission to post granted. ~7100 elevation.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3888956678; Occurrence Remarks: Second snake moved from the same porch in 3 days. I believe this one is a gravid female. https://youtu.be/eqVPKbS-CbY;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3902739240; Occurrence Remarks: Young rattlesnake found on Alum Rock rd.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3902714297; Occurrence Remarks: about 4 long;; Coordinate Uncertainty in Meters: 114.00000.

GBIFID: 1850977943; Occurrence Remarks: found under a decaying log;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3923474429; Occurrence Remarks: Small snake, maybe 12-15. Reminds me of Red Diamondback Rattlesnake seen in San Diego County but much smaller.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 891061313; Occurrence Remarks: Near the CLARK Bench, just off trail 9. Large set of rattles from the amount of sound produced. Estimate body diameter at least 2.5 to 3.0 inches; the size of my wrist. It was very nervous and so was I;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1088951054; Occurrence Remarks: This young Northern Pacific Rattlesnake (Crotalus oreganus oreganus) was basking on the road. We chased it to the roadside and it responded by coiling up perfectly for some pics. One of two rattlesnakes we found, both were young. The other had been run over and was dying on the road.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4011797050; Occurrence Remarks: Sorry for the graphic roadkill photo. Recently fresh roadkill. WasnΓÇÖt expecting to see this out in the rain.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4014820066; Occurrence Remarks: Found while conducting a survey. Location obscured.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4022380385; Occurrence Remarks: Just hanging out in the center of the trail;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1092887957; Occurrence Remarks: It was crossing the trail then coiled up under a thistle as I approached. No rattling, just some tongue flicking. Might be the darkest one Ive seen. And it has a really long coontail section. A fellow hiker said he saw a large rattler entering a Ground Squirrel den. Wish I could have seen that...;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4080969256; Occurrence Remarks: Photographed where it was released, about 200 meters from the unsuitable location where it was found :) https://youtu.be/KyqH_7Pc27g;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4080710378; Occurrence Remarks: Hard to tell from the photos;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4091643784; Occurrence Remarks: About 10 inches long, 1/2 diameter.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4096620570; Occurrence Remarks: Deceased;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4102559269; Occurrence Remarks: Yeah thats the front door to my AirBnB :-/;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4102771422; Occurrence Remarks: Alum Rock Park, 2 hikes, 3 snakes. 2 of them on South Rim side.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1099959892; Occurrence Remarks: From past files .;; Coordinate Uncertainty in Meters: 1364.00000.

GBIFID: 4116378238; Occurrence Remarks: There are two rattlesnakes in this photo.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4130174789; Occurrence Remarks: Relocated and released;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4165745404; Occurrence Remarks: Found in the yard (coiled photos) and relocated about 100 meters away to a more appropriate place.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4171432153; Occurrence Remarks: Looks like it was consuming its second squirrel;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3455385307; Occurrence Remarks: I think this snake just had a big meal. It was not at all bothered by my approach.;; Coordinate Uncertainty in Meters: 105.00000.

GBIFID: 1122967813; Occurrence Remarks: The snake was on the hiking trail as we were hiking out of McGee Canyon. We gave it wide berth; it slowly crossed the trail toward us and we went around and back to the trail. I have a few other photos of the snake if they would be helpful for identification. This was around 8,000 ft in elevation.;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 5168145395; Occurrence Remarks: Escorted across the road so it wasnt run over. Beautiful;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 4177268213; Occurrence Remarks: Eating a mouse;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4400384903; Occurrence Remarks: Crossing the road; low 70ΓÇÖs temperature wise (71-74 degrees) at 11:19am. Went back into the bushes as I approached for a picture. Did not rattle. At 7,700 feet elevation.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4400482054; Occurrence Remarks: About 2.5 ft long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4847048074; Occurrence Remarks: Photographr Chris Scharf - client of Royle Safaris on tour;; Coordinate Uncertainty in Meters: 16337.00000.

GBIFID: 4413479084; Occurrence Remarks: sunning itself across a trail but zipped into the brush when I got closer;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936140002; Occurrence Remarks: ~7100 elevation. I was taking iPhotos of Westons Buckwheat https://www.inaturalist.org/observations/185896847 & then sat on rock next to the plant to try to image a spider I noticed on the stalk of the Buckwheat. When I got up and walked a few steps around the plant I noticed the snake who looked like it had its head in the mid-section of the rodent. Great Basin Rattlesnakes at this location are for the most part fairly docile, it takes a bit of effort to get them in defensive position. Not this time! It immediately tried to get into defensive position, it was protecting its meal. The meal is probably important this time of year as they return to their den for winter. I still had the phone on Portrait mode and was too adrenalined to think of trying to get better shots. The snake retreated into a small opening in the rock above the rodent. If you look carefully the white on the snake can be seen it the little cubby. I left the area to let the snake eat in peace. :-);; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4442501027; Occurrence Remarks: aor;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4597412986; Occurrence Remarks: just a little guy, went back into the woods offtrail after a bit;; Coordinate Uncertainty in Meters: 58.00000.

GBIFID: 4852821785; Occurrence Remarks: neonate;; Coordinate Uncertainty in Meters: 40.00000.

Alameda, California: 37.657095, -121.916371: : 4/21/2024: plantsplantsplantsplants: 21 Apr 2024 :

GBIFID: 4851929639; Occurrence Remarks: I found this rattlesnake tail under a bush along the trail. (Ed R. Levin County Park);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852986359; Occurrence Remarks: Juvenile individual that was directly in the middle of the trail. Eventually slithered off into the grass.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3398677312; Occurrence Remarks: Night drive.;; Coordinate Uncertainty in Meters: 1686.00000.

GBIFID: 4851780070; Occurrence Remarks: Juvenile, first of two seen.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4854912572; Occurrence Remarks: Prairie Rattlesnake (Crotalus viridis viridis); Cottonwood Narrows, W of Cottonwood Road (Road 400), Escalante National Monument, S of Cannonville, UT;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2028485809; Occurrence Remarks: First rattle snake of the year. Less than 10 inches long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4863803485; Occurrence Remarks: Found under rock;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 1144979991; Occurrence Remarks: This was found near Queens Garden...someone killed it. Really not sure why there are not more signs around telling people not to disturb wildlife including reptiles. Probably would not have kept whoever did this from killing the snake but it might have prompted anyone who might have seen this happen to report that person. I was really disappointed to see this beautiful snake dead in such a well traveled area...still, I would be interested in what the snakes formal name was.;; Coordinate Uncertainty in Meters: 1718.00000.

GBIFID: 4892171002; Occurrence Remarks: One rattlesnake partially hidden by vegetation in rocky areas in sagebrush scrub;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2236265462; Occurrence Remarks: About 3 ft long;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2236264969; Occurrence Remarks: Young snake with its head removed found in the trail. Probably killed by a jerk of a person? Maybe dropped by a bird.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4901338523; Occurrence Remarks: Did little rattles at me as it went into its rock hole.;; Coordinate Uncertainty in Meters: 71.00000.

GBIFID: 4902152557; Occurrence Remarks: I saw a rock mound with snake shed around it so I walked towards it to see if I can find anything and almost immediately I started hearing rattling. I saw the rattlesnake itself but it was in its cave and went in too deep too get a pic of it.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4904257125; Occurrence Remarks: Came literally 3 inches from stepping on it according to my coworker behind me.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2236923393; Occurrence Remarks: I noted that it was a higher elevation and the rattlesnake looked more green than IΓÇÖm used to seeing compared to the ones in the foothills!;; Coordinate Uncertainty in Meters: 5699.00000.

San Joaquin, California: 37.682775, -121.509404: : 7/3/2024: Jeremiah Degenhardt: 3 Jul 2024 :

GBIFID: 4910726653; Occurrence Remarks: Basking from a rocky outcrop during the morning warmup. Seen about two hours later as well. Iron County;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4935815193; Occurrence Remarks: Two male rattlesnakes were performing combat dance. Full video https://www.youtube.com/watch?v=scpD2WbVokw&t=280s;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4936255617; Occurrence Remarks: Scanner;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 4946004580; Occurrence Remarks: Dead on Road;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1850988630; Occurrence Remarks: Crotalus oreganus abyssus ???;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 4946477819; Occurrence Remarks: Dying;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4946061798; Occurrence Remarks: Found in a Canyon at Lake Powell, Utah. I took this a few years ago, so I dont remember which canyon.;; Coordinate Uncertainty in Meters: 24872.00000.

GBIFID: 2239033760; Occurrence Remarks: Looked to be 3+ feet long. Rattle is evident. Stayed in this position for several minutes, allowed me to walk around to right without reacting.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4950010105; Occurrence Remarks: Same as https://www.inaturalist.org/observations/245021248 I think;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4952787771; Occurrence Remarks: Saw lots of sheds today. This is my first time seeing a rattlesnake shed with its face still intact.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4953133347; Occurrence Remarks: Kinda looks like a king snake from this shot but itΓÇÖs banded because itΓÇÖs the end of its tail. I also attached an audio recording.;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 4952654786; Occurrence Remarks: Two male rattlesnakes fighting Saw on side of the road;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4954561049; Occurrence Remarks: Was starting to eat but had to get them off the road;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 891144708; Occurrence Remarks: Another walker found it right next to the Sawyer Camp Trail. It was nice to see such a beautiful snake next to all the lululemon-clad hikers!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5133587500; Occurrence Remarks: The supraocular scale seems more like a rattlesnakes than a gopher;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4976370861; Occurrence Remarks: A juvenile individual about 12 inches long.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5133168314; Occurrence Remarks: Smallest and brightest rattlesnake I have ever seen in the wild.;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 5133981193; Occurrence Remarks: This was my first in-person encounter with a rattlesnake! The experience was mesmerizingΓÇª;; Coordinate Uncertainty in Meters: 11.00000.

Alameda, California: 37.582575, -121.688609: : 4/4/2026: shanec97: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891156139; Occurrence Remarks: The first switchback on the Wild Rye Trail seems to be a favorite place for rattlesnakes to take the morning sun.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 5154181338; Occurrence Remarks: First sighting this year; this venomous pit viper was resting in the shade of willows and sycamore trees.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5154344649; Occurrence Remarks: A gentle rustling of dry leaves in the grass alerted my attention to the sight: an adult rattlesnake was slithering towards the creek.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5154295592; Occurrence Remarks: A faint rattling caught my attention: this rattlesnake made an eye contact with me, as a pedestrian would with a driver before crossing the road, and it slithered into the tall green grass in search of its preyΓÇª A magnificent sight! Fortunate to capture it with photos!;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5154864339; Occurrence Remarks: This juvenile individual was basking in the sun and couldnΓÇÖt care less about a passerby. I notified a ranger, who happened to be in his truck nearby, about the rattlesnakeΓÇÖs presence on the road so that it wouldnΓÇÖt become an accidental roadkill.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1500216341; Occurrence Remarks: 1 above Right Fork Yellow Creek; smaller one above 7000; 12 AM & 2 PM; sunny mild breezy;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153983188; Occurrence Remarks: This snake was about two feet long.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153012210; Occurrence Remarks: Very small. Inadvertent weed-whacking casualty I think.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153646737; Occurrence Remarks: Relocated away from group camp site;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 5167623492; Occurrence Remarks: Phone dhoty, Got better shots with my camera;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5167670251; Occurrence Remarks: Observed this juvenile rattlesnake deftly slithering across the asphalt trail into the yellowing grass. It made a 180-degree turn to smile for the camera;) Seconds later, it made another 180-degree proceeding towards the grass.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2283281212; Occurrence Remarks: Very recently shed, maybe still in progress (discarded skin in photos).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2294478043; Occurrence Remarks: Munching a squirrel!;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1901088577; Occurrence Remarks: - https://www.herpmapper.org/voucher/5679/full.jpg;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5216766004; Occurrence Remarks: Two adults and a juvenile present.;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 5217490434; Occurrence Remarks: Completely still, no tounge flips;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1265583582; Occurrence Remarks: Sorry for the terrible photos.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 5237715649; Occurrence Remarks: Very lively and healthy looking;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 4904325008; Occurrence Remarks: Not my photo it was sent to me and the individual is looking for identification of this rattlesnake.;; Coordinate Uncertainty in Meters: 2468.00000.

GBIFID: 2423137623; Occurrence Remarks: Is this a juvenile midget faded rattlesnake? Observed along hiking trail in Bryce Canyon National Park. It rattled to alert us as we unexpectedly crossed its path;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 2429395592; Occurrence Remarks: Small guy (or gal) 12-18inches;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2451722686; Occurrence Remarks: Tiny thing on a 70 degree evening just after sundown in the canyon.;; Coordinate Uncertainty in Meters: 66.00000.

GBIFID: 2451746335; Occurrence Remarks: Roadkill. Brought to side of road for further examination.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2456521819; Occurrence Remarks: Alive on side of road.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2456526266; Occurrence Remarks: On side of road. Not roadkill!;; Coordinate Uncertainty in Meters: 88.00000.

GBIFID: 2576282854; Occurrence Remarks: Blue rattlesnake blending in with bluish serpentine soils;; Coordinate Uncertainty in Meters: 281.00000.

GBIFID: 1457582268; Occurrence Remarks: Found along the Peek-a-boo Loop Trail in Bryce Canyon National Park. Location information is not exact. The rattle can be seen a little bit in the last photo.;; Coordinate Uncertainty in Meters: 191.00000.

GBIFID: 1323020941; Occurrence Remarks: Dead≡ƒÿö;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2610975070; Occurrence Remarks: Just slithering along the path...;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 891067894; Occurrence Remarks: new photo old one wrong format;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2611330966; Occurrence Remarks: Air temp 65F. Snake temp 79.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3031835695; Occurrence Remarks: Sorry that I couldnΓÇÖt get any better photos. It tried to bite me and I got scared. Anyone know what species it is or what species it could be?;; Coordinate Uncertainty in Meters: 38.00000.

GBIFID: 4936560273; Occurrence Remarks: Road killed;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2634610642; Occurrence Remarks: Unfortunate recent DOR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2802783853; Occurrence Remarks: Not a gopher snake! Baby.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3070486329; Occurrence Remarks: at a truck stop;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1453503512; Occurrence Remarks: About 8 feet off the trail, wasnt rattling. 3-4 ft long.;; Coordinate Uncertainty in Meters: 2064.00000.

GBIFID: 2823153099; Occurrence Remarks: Thought it was one, turned out to be two. The last photo is a second snake that I couldnt see until the 1st went away.;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 2856508712; Occurrence Remarks: Moving away from a pair of decaying fallen trees. With Kaj.;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 2859935773; Occurrence Remarks: Found beneath rock;; Coordinate Uncertainty in Meters: 4208.00000.

GBIFID: 2864565774; Occurrence Remarks: Tiny neonate!;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 1500344342; Occurrence Remarks: Edgewood park, Redwood City, San Mateo county;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500351628; Occurrence Remarks: Unfortunately, this was the second time Ive been in a car where we see a herp in the middle of the lane, go past it, pull over, and watch as a following car runs run over it because its avoiding me on the side of the road. I think in the future I just need to look for a following car first, and stay in the vehicle until it passes.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1500352056; Occurrence Remarks: @kueda wrangled this young beauty into a perfectly cool position.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1562903140; Occurrence Remarks: I dont know the species, maybe somebody can help me out. I just know its a rattlesnake. Found dead;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899967221; Occurrence Remarks: Must have just been hit by a car and was slowly dying. Very sad.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2898531170; Occurrence Remarks: Almost grabbed this fellow whilst letterboxing. It never woke up even after digging all around the area with a stick.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1563444540; Occurrence Remarks: A juvenile rattle snake.;; Coordinate Uncertainty in Meters: 174.00000.

GBIFID: 891075747; Occurrence Remarks: Four Individuals;; Coordinate Uncertainty in Meters: 28417.00000.

GBIFID: 1571092302; Occurrence Remarks: Parents took this photo. Dont know exact location, but it was found somewhere at Sycamore Grove.;; Coordinate Uncertainty in Meters: 191.00000.

GBIFID: 899978002; Occurrence Remarks: Short video of it putting on its show: https://vimeo.com/93518802;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899978034; Occurrence Remarks: Dead Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Alameda County, California.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571114176; Occurrence Remarks: It was coiled, sleeping on its tail. So I am not sure if it was a Rattler or a Gopher Snake.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1571154116; Occurrence Remarks: Almost walked on top of this snake on the trail. It was pretty big one.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3032146745; Occurrence Remarks: Animal. Very venomous, and apart of the pit viper family. Found across the Baja California Peninsula. This is darker than the rattle snake normally found in my back yard, they tend to have a lighter diamond type pattern on them.;; Coordinate Uncertainty in Meters: 572831.00000.

GBIFID: 1831141174; Occurrence Remarks: The second rattlesnake I saw at Jasper Ridge today. No photos of the other one. This small rattlesnake (less than 2 feet long?) was on the trail, just off of Searsville Dam on the western side. 4:20 pm. More images and info at . Is this the right ID??;; Coordinate Uncertainty in Meters: 357.00000.

GBIFID: 3090732497; Occurrence Remarks: az05_14.jpg;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3097008729; Occurrence Remarks: rattlesnake seen on walk in Niles Canyon of Fremont CA on 2017 July 14;; Coordinate Uncertainty in Meters: 1719.00000.

GBIFID: 3109037217; Occurrence Remarks: A very handsome devil.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 923925033; Occurrence Remarks: Very handsome young rattler. DOR.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3112575206; Occurrence Remarks: A real beauty.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3113700557; Occurrence Remarks: Found on the Timber Creek overlook trail in Kolob Canyon;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3124620806; Occurrence Remarks: This still shot is a frame from a motion photo that itΓÇÖs too bad I canΓÇÖt upload as a video. The tailΓÇÖs visible in it briefly. I initially ruled out rattlesnake because it has only a single small nub. But the size and stripe pattern match the Northern Pacific Rattler.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3302154816; Occurrence Remarks: Look on cement post. Trying to identify species of snake....looks like a crotalus not sure which one;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3302132894; Occurrence Remarks: Please confirm species;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 3302469839; Occurrence Remarks: Young snake, maybe 18ΓÇ¥ in length. No black or white on tail. Passively laying on the warm tarmac until it sensed me, then it started rattling and retreated back through a gap in the lane dividers on the shoulder.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3307220705; Occurrence Remarks: First ever road cruised snake (alive at least);; Coordinate Uncertainty in Meters: 3697.00000.

GBIFID: 1677285953; Occurrence Remarks: Professor Jim McGuire shows off his venomous snake handling expertise with this baby rattlesnake that was chilling in the parking lot.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3314190224; Occurrence Remarks: cool pattern;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3320865714; Occurrence Remarks: Did not rattle;; Coordinate Uncertainty in Meters: 59.00000.

GBIFID: 3320848014; Occurrence Remarks: Nice to see a rattlesnake that isnΓÇÖt roadkill for once.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3321218431; Occurrence Remarks: This juvenile norpac was hit by the car in front of us, he still was moving and biting as I moved him off the road, very sad end to the night;; Coordinate Uncertainty in Meters: 487.00000.

GBIFID: 3321174338; Occurrence Remarks: Dor;; Coordinate Uncertainty in Meters: 1867.00000.

GBIFID: 3325616372; Occurrence Remarks: Rattlesnake tail. (Ed R. Levin County Park);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3330469103; Occurrence Remarks: ID was requested by a Facebook friend.;; Coordinate Uncertainty in Meters: 6196.00000.

GBIFID: 3337837519; Occurrence Remarks: img_6819;; Coordinate Uncertainty in Meters: 1684.00000.

GBIFID: 1805400837; Occurrence Remarks: Not 100% sure!;; Coordinate Uncertainty in Meters: 1721.00000.

San Mateo, California: 37.477508, -122.292183: : 4/5/2026: Gregory Luckert: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3384427076; Occurrence Remarks: In S wing stairwell. Animal control came and removed the young rattlesnake.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3384166121; Occurrence Remarks: Some sort of rattlesnake on the fairyland loop;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3385003327; Occurrence Remarks: very young, curled up hiding in this sycamore. i hope people are checking and keeping their kids and pets safe playing in the area!;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3385084595; Occurrence Remarks: Cute young one- look at that nub;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 1807329373; Occurrence Remarks: See for more info;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3398660092; Occurrence Remarks: Beautiful fresh snake.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3398954349; Occurrence Remarks: This thing was huge and it started rattling as soon as it knew I was approaching and still thirty feet away.;; Coordinate Uncertainty in Meters: 244.00000.

Alameda, California: 37.691114, -121.592957: : 3/16/2026: Jude Magann: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Occurrence Remarks: Nice one; Coordinate Uncertainty in Meters: 244.00000.

Santa Clara, California: 37.396377, -121.80326: : 7/3/2026: Nancy Asquith: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 75.00000.

Occurrence Remarks: Rattlesnake? Or gophersnake?; Coordinate Uncertainty in Meters: 4.00000.

San Mateo, California: 37.445422, -122.292892: : 7/4/2026: Kyle Kaufman: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Iron, Utah: 37.641821, -112.992156: : 7/4/2026: Jack Vakiener: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 38.00000.

San Joaquin, California: 37.606794, -121.455957: : 8/22/2025: Parsa Fard: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.643814, -121.588233: : 8/21/2025: Parsa Fard: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Mono, California: 37.552889, -118.800572: : 7/5/2026: Forrest English: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 250.00000.

San Joaquin, California: 37.604679, -121.523209: : 8/21/2025: Parsa Fard: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

San Joaquin, California: 37.624478, -121.408401: : 8/6/2025: Parsa Fard: 6 Aug 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.568795, -121.697647: : 5/10/2025: Philip Georgakakos: 10 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Mariposa, California: 37.660512, -119.917755: : 9/2/2025: pepperjackb: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Unbothered little thing, thankfully noticed at 4 ft away.; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: This one was coiled and buzzing on the far side of a rock as I passed close by on the trail.; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Relocated from bathroom; Coordinate Uncertainty in Meters: 11.10000.

Alameda, California: 37.555485, -121.726875: : 7/1/2026: custudios: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: Slithering across the Dusky-footed Woodrat Trail by The Portal.; Coordinate Uncertainty in Meters: 20.00000.

San Mateo, California: 37.534825, -122.369842: : 7/17/2026: Dan Gavin: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.628925, -122.028464: : 7/19/2026: Tony Iwane: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Alameda, California: 37.575884, -121.687423: : 4/9/2026: shanec97: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847510994; Occurrence Remarks: One of the prettiest Ive seen. Mustve just shed.;; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: Two individuals; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: First time encountering a rattlesnake The rattle sound is so loud I didnΓÇÖt expect it; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Occurrence Remarks: Found this shed today and have seen this snake many times. Believe shes a female and very tolerant of humans; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Occurrence Remarks: Under manzanita in white pine grove at 3400 feet.; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: Oscar progeny first meeting 70F; Coordinate Uncertainty in Meters: 28329.00000.

Occurrence Remarks: 70F Felix site last photo shows rattle in bottom third of the photo and a bit left of center (in shadow); Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.809809, -122.06113: : 10/29/2025: shanec97: 29 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: dark younger snake (new) head (and eye) is at the top of opening in rock 69F sun; Coordinate Uncertainty in Meters: 28329.00000.

Occurrence Remarks: green/brown younger snake 69F sun; Coordinate Uncertainty in Meters: 28329.00000.

Tuolumne, California: 37.878828, -119.941236: : 9/27/2025: imahaffey13: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 324.00000.

Marin, California: 37.934242, -122.526488: : 10/18/2025: cowgirlgreenery: 18 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Tuolumne, California: 37.93273, -119.581628: : 8/3/2025: Jasper Jones: 3 Aug 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Alameda, California: 37.867775, -122.237167: : 11/23/2025: nkordesch: 23 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.893773, -122.233397: : 7/23/2026: cragaddict: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Lincoln, Nevada: 37.821189, -114.416098: : 7/24/2026: louise_loves_bees: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 57.00000.

Mariposa, California: 37.743036, -119.55809: : 6/27/2026: Jock McLean: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.750979, -119.494965: : 7/23/2026: Nathan Laboe: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 419.00000.

Occurrence Remarks: Pretty cool!; Coordinate Uncertainty in Meters: 13.00000.

Mariposa, California: 37.716397, -119.650245: : 7/25/2026: Abhishek Palit: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: 40ΓÇ¥ ish length 69F; Coordinate Uncertainty in Meters: 28329.00000.

San Joaquin, California: 37.876027, -121.366777: : 10/2/2025: Adam Aslam: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 28329.00000.

Occurrence Remarks: Found in Yosemite National Park. Someone nearby said it was a rattlesnake.; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.725047, -119.532487: : 6/30/2025: Angel Guzman: 30 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.816859, -122.049957: : 9/1/2025: bradrumble: 1 Sep 2025 ; Coordinate Uncertainty in Meters: 24.00000.

Contra Costa, California: 37.847777, -122.190301: : 9/26/2025: Kevin Dixon: 26 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: We saw this couple walking towards us, and I noticed as one lady walked by i saw something move by her boot, she had barely missed stepping on this baby rattler, this one was young enough it couldnt make a sound with its rattle. It only had 1 ball on its tail so no noise, this one mustve hatched this year, the snake and that lady were both really lucky none of them got hurt, I took a stick and picked the snake up and moved it about 20 feet off the path so it wouldnt get stepped on or hit by a bike; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.91917, -121.929153: : 3/22/2026: Lindsey Gaul: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Contra Costa, California: 37.913712, -121.943428: : 3/28/2026: kdejong: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 22.00000.

Contra Costa, California: 37.883091, -121.990829: : 3/20/2026: charissa8606: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 75.00000.

GBIFID: 1850980777; Occurrence Remarks: Here is one of the hazards while we looked for dragonflies and herps . We were dangerously close to it when we found it . This is at a pond`s edge .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4127456867; Occurrence Remarks: Had almost its whole body off the ground. One of the most angry and aggressive rattlesnakes IΓÇÖve encountered.;; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.83593, -121.948508: : 5/8/2025: malcolma: 8 May 2025 ; Coordinate Uncertainty in Meters: 45.00000.

Mariposa, California: 37.725465, -119.531268: : 5/23/2026: Natalia Elosegui Zaballa: 23 May 2026 ; Coordinate Uncertainty in Meters: 117.00000.

Mariposa, California: 37.72488, -119.532837: : 5/23/2026: Julene Vera Castillo: 23 May 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Can you spot the rattlesnake? Because I sure didnt.; Coordinate Uncertainty in Meters: 26.00000.

Contra Costa, California: 37.901583, -122.099831: : 4/17/2026: Brynne Stevens: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.856524, -122.087631: : 4/18/2026: Bradley Silicani: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Contra Costa, California: 37.864258, -121.964578: : 3/29/2026: berkeleyscottandrews: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Swollen mid section, digesting recent meal?; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.80915, -122.253084: : 9/2/2025: syncytium: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 75930.00000.

Contra Costa, California: 37.878622, -121.920728: : 5/19/2026: msolachava: 19 May 2026 ; Coordinate Uncertainty in Meters: 66.00000.

Contra Costa, California: 37.892765, -122.2435: : 5/14/2026: queeryecology: 14 May 2026 ; Coordinate Uncertainty in Meters: 33.00000.

Mariposa, California: 37.726703, -119.539345: : 5/21/2026: aanderson9: 21 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Lime Ridge; Coordinate Uncertainty in Meters: 34.00000.

Alameda, California: 37.749787, -121.70768: : 5/13/2026: ebrpd: 13 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Contra Costa, California: 37.881052, -121.936902: : 5/24/2026: forest__channel: 24 May 2026 ; Coordinate Uncertainty in Meters: 257.00000.

Occurrence Remarks: Found a den under our porch! 3 rattlesnake removed; Coordinate Uncertainty in Meters: 11.10000.

Occurrence Remarks: 1 of 3 rattlesnakes removed from our porch!; Coordinate Uncertainty in Meters: 11.10000.

Mariposa, California: 37.744288, -119.604195: : 5/12/2026: Elizabeth Jorgensen: 12 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.724945, -119.532762: : 5/23/2026: Leire: 23 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.823428, -122.060203: : 5/30/2026: brightwulf: 30 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.933373, -121.993999: : 5/31/2026: Isaac Krone: 31 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.866092, -121.924975: : 5/31/2026: bendellis: 31 May 2026 ; Coordinate Uncertainty in Meters: 1870.00000.

GBIFID: 1850976459; Occurrence Remarks: Looks like it had recently eaten.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3712695118; Occurrence Remarks: Older photo.;; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.92711, -122.142843: : 2/7/2026: Jonah Benningfield: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.926672, -122.143088: : 2/7/2026: Jonah Benningfield: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.925555, -122.148203: : 2/7/2026: Jonah Benningfield: 7 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.839477, -119.561391: : 8/3/2025: wandering_wizard27: 3 Aug 2025 ; Coordinate Uncertainty in Meters: 937.00000.

Alameda, California: 37.805568, -122.152554: : 3/6/2026: Richard S Donahue: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.937032, -122.141078: : 3/8/2026: Bruce Nilles: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.897456, -122.031063: : 3/8/2026: khsmith: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 73.00000.

Occurrence Remarks: 68 F; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.853648, -121.696426: : 3/14/2026: kentatogo: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Alameda, California: 37.712538, -121.625446: : 3/15/2026: deanfallsalot: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 20963.00000.

Contra Costa, California: 37.850703, -121.8944: : 5/10/2026: gnarlyshields: 10 May 2026 ; Coordinate Uncertainty in Meters: 58.00000.

Contra Costa, California: 37.913744, -121.949406: : 10/4/2025: kumiko2: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Contra Costa, California: 37.863285, -121.92368: : 9/21/2025: Loren: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 1302.00000.

Mariposa, California: 37.864722, -119.538329: : 6/17/2025: Erriyon Solo: 17 Jun 2025 ; Coordinate Uncertainty in Meters: 37311.00000.

Garfield, Utah: 37.801533, -111.190262: : 10/13/2025: juantumani: 13 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.748142, -121.70278: : 3/18/2026: alexioverland: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Two males doing a dominance dance; Coordinate Uncertainty in Meters: 28359.00000.

Contra Costa, California: 37.917283, -121.923575: : 5/1/2026: anyaflora: 1 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.797734, -122.119522: : 5/2/2026: wellmaysays: 2 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.899545, -122.109219: : 4/26/2026: kdejong: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.910142, -121.950197: : 4/30/2026: Liz: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Tuolumne, California: 37.90243, -119.81897: : 5/2/2026: mpainter: 2 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Tuolumne, California: 37.91807, -120.406063: : 5/8/2026: CokieBauder: 8 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.83957, -121.726972: : 4/29/2026: kimachziger: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Contra Costa, California: 37.920228, -121.941903: : 5/9/2026: Julie Mount: 9 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Marin, California: 37.912853, -122.603662: : 5/7/2026: eaines: 7 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Mariposa, California: 37.729883, -119.526694: : 5/9/2026: parpaingchampetre: 9 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.871718, -121.916338: : 5/9/2026: zakloes: 9 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Leaving road, appeared injured & agitated; Coordinate Uncertainty in Meters: 1.11000.

Marin, California: 37.914041, -122.606534: : 5/10/2026: Brian Siklinski: 10 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.775881, -120.115321: : 9/21/2025: yvi_b: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.914932, -121.948873: : 3/25/2026: mammaquail: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: 69F; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.914745, -121.948097: : 5/7/2026: steve-beatty: 7 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Contra Costa, California: 37.850503, -122.189912: : 3/29/2026: ejsimonet: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Joaquin, California: 37.755329, -121.47031: : 5/28/2025: spadefeet: 28 May 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Occurrence Remarks: Dark green; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: roughly 1.5 ft long; Coordinate Uncertainty in Meters: 290.00000.

Contra Costa, California: 37.915417, -121.948747: : 9/20/2025: edithkat: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.915403, -121.947503: : 9/21/2025: michaelvendrell: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Alameda, California: 37.702155, -121.582612: : 9/21/2025: Jude Magann: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Alameda, California: 37.698604, -121.657847: : 5/11/2026: Brooke J.: 11 May 2026 ; Coordinate Uncertainty in Meters: 271.00000.

Contra Costa, California: 37.897998, -122.01788: : 5/12/2026: Debra Feammelli: 12 May 2026 ; Coordinate Uncertainty in Meters: 204.00000.

Mariposa, California: 37.725405, -119.532061: : 5/15/2026: jerrybinox: 15 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.889991, -121.993413: : 5/16/2026: Janna: 16 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Contra Costa, California: 37.89767, -121.977222: : 5/17/2026: VisWildPhoto: 17 May 2026 ; Coordinate Uncertainty in Meters: 28329.00000.

Occurrence Remarks: Never even got a chance to take photos with the camera- as soon as this little one had been seen, it was on the move, heading down the bank of the creek to hide amongst the vegetation. It was originally sunning itself on the trail. A few cell phone pictures was all I was able to do as it scrambled away. Probably only about a foot in length.; Coordinate Uncertainty in Meters: 22.00000.

Contra Costa, California: 37.892158, -122.018372: : 3/16/2026: Treeus_greenus: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Joaquin, California: 37.780736, -121.49243: : 3/18/2026: VisWildPhoto: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

San Joaquin, California: 37.751523, -121.444473: : 3/18/2026: VisWildPhoto: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Contra Costa, California: 37.914035, -121.948469: : 3/21/2026: Sidd: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.751392, -121.702251: : 3/21/2026: Cat Chang: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Marin, California: 37.923431, -122.616044: : 3/21/2026: Eric Cameron: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Occurrence Remarks: Someone killed it before we found it.; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.873705, -121.960153: : 3/22/2026: Leah Zilberman: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.868316, -121.979037: : 3/21/2026: cragaddict: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Alameda, California: 37.755603, -121.698917: : 3/21/2026: Arvel Hernandez: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: I went looking and I immediately found a juvenile below a piece of fallen oak tree in an open east facing clearing.; Coordinate Uncertainty in Meters: 28329.00000.

Marin, California: 37.90987, -122.611153: : 3/27/2026: BushWookieT: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Contra Costa, California: 37.901447, -122.212263: : 3/22/2026: alex3haase: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.894886, -122.028717: : 3/25/2026: cambarellus: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.913628, -121.938189: : 4/2/2026: Francois Powell: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.913642, -121.938263: : 4/3/2026: aldanaak: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Contra Costa, California: 37.927022, -122.142417: : 4/3/2026: xbugbiterx: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.905098, -121.939103: : 3/29/2026: kendalloei: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.893787, -122.010781: : 10/3/2025: Willie Carlile: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Contra Costa, California: 37.926955, -122.143205: : 3/1/2025: The Vertebrate Pok├⌐dex: 1 Mar 2025 :
Occurrence Remarks: *Crotalus oreganus* sp. lifer and *Crotalus oreganus oreganus* ssp. lifer.; Coordinate Uncertainty in Meters: 0.11000.

Mariposa, California: 37.754119, -119.582978: : 6/5/2025: west_wildlifer: 5 Jun 2025 ; Coordinate Uncertainty in Meters: 11229.00000.

Alameda, California: 37.754258, -121.7697: : 12/3/2025: Andrew Ford: 3 Dec 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.804398, -122.010836: : 12/27/2025: Jacob Martin: 27 Dec 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Mariposa, California: 37.726392, -119.557428: : 6/18/2025: morganharr: 18 Jun 2025 ; Coordinate Uncertainty in Meters: 58.00000.

Tuolumne, California: 37.935058, -119.485628: : 6/24/2025: lizzywenk: 24 Jun 2025 ; Coordinate Uncertainty in Meters: 55.00000.

San Joaquin, California: 37.728681, -121.488453: : 6/3/2026: Adam Aslam: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Mariposa, California: 37.721788, -119.552119: : 6/3/2026: Brian Halper: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 350.00000.

Mariposa, California: 37.699162, -119.751703: : 6/5/2026: Jerry James: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 1396.00000.

Alameda, California: 37.73289, -121.652039: : 6/11/2026: sorryforalltheroadkill-weneeddata: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

San Joaquin, California: 37.799305, -121.50938: : 6/11/2026: sorryforalltheroadkill-weneeddata: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Alameda, California: 37.771428, -121.642402: : 6/11/2026: sorryforalltheroadkill-weneeddata: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

San Joaquin, California: 37.78404, -121.406852: : 6/13/2026: Snakeyherper: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Tuolumne, California: 37.854654, -119.9455: : 6/10/2026: juliana_mcd: 10 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 37.832205, -122.533997: : 6/17/2026: Greg Czekaj: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Contra Costa, California: 37.896778, -122.008042: : 6/18/2026: urbanbird: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Mariposa, California: 37.718171, -119.469368: : 6/18/2026: Alexander Rurik: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Contra Costa, California: 37.91193, -122.204613: : 6/20/2026: scissors2kil: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.726059, -119.55564: : 6/22/2026: claytonlau: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.72624, -119.552985: : 6/22/2026: Kevin Achtmeyer: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 94.00000.

Alameda, California: 37.865523, -122.24293: : 7/13/2026: dsawgfrog: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Male dominance battle; Coordinate Uncertainty in Meters: 4.00000.

Tuolumne, California: 37.854672, -119.945503: : 6/10/2026: juliana_mcd: 10 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Tuolumne, California: 37.854755, -119.945695: : 6/11/2026: juliana_mcd: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Mariposa, California: 37.743033, -119.558122: : 6/27/2026: Jock McLean: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.743017, -119.558137: : 6/27/2026: Jock McLean: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.828258, -122.047439: : 6/28/2026: quirkycorvid: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Mariposa, California: 37.726269, -119.530708: : 7/15/2026: Lainy Sullivan: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 58.00000.

Mariposa, California: 37.726282, -119.530662: : 7/15/2026: Lainy Sullivan: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mariposa, California: 37.727597, -119.541892: : 6/18/2026: antsignorino: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 53.00000.

Mariposa, California: 37.727284, -119.542883: : 6/22/2026: sarah_lof: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 45.00000.

Contra Costa, California: 37.927079, -122.142605: : 3/1/2025: The Vertebrate Pok├⌐dex: 1 Mar 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3456832743; Occurrence Remarks: Northern Pacific Rattlesnake, Black Point Trail, Mitchell Canyon, Mt. Diablo SP;; Coordinate Uncertainty in Meters: 212.00000.

GBIFID: 3466335345; Occurrence Remarks: South facing slope under some fallen oak bark. Sunny, 17 Celsius. No rattling. A tiny bit of tongue action.;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1837764239; Occurrence Remarks: Quite active, crossing the trail.;; Coordinate Uncertainty in Meters: 127.00000.

GBIFID: 3698071604; Occurrence Remarks: Neonate Northern Pacific Rattlesnake (Crotalus oreganus oreganus), eastern Contra Costa County, California;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3698201696; Occurrence Remarks: Neonate Northern Pacific Rattlesnake (Crotalus oreganus oreganus), eastern Contra Costa County, California;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3760630440; Occurrence Remarks: Very poor picture as it slithered away.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3760269999; Occurrence Remarks: First year snake. Photo taken through binoculars. In reality, this guy (or gal) could have fit in the palm of your hand. Not that I would try that!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3759352505; Occurrence Remarks: This looked about two and a half feet long .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 3760294595; Occurrence Remarks: Found by @lillora;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3760330593; Occurrence Remarks: Cute young rattlesnake;; Coordinate Uncertainty in Meters: 83.00000.

GBIFID: 1839244376; Occurrence Remarks: Sorry for the poor photo, it was well hidden and I wanted to keep my distance.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1839244910; Occurrence Remarks: Western rattlesnake (Crotalus oreganus), pre-molt.;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 3772596154; Occurrence Remarks: On trail;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3773687302; Occurrence Remarks: King v rattler;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3773522492; Occurrence Remarks: snake;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3802623637; Occurrence Remarks: My very first rattlesnake!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802416254; Occurrence Remarks: Skinny youngun.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3802484496; Occurrence Remarks: On the trail from the Valley to Glacier Point;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3858651679; Occurrence Remarks: Pictures are zoomed in and taken from a safe distance! (Was not rattling);; Coordinate Uncertainty in Meters: 4.00000.

Tuolumne, California: 37.845208, -120.183105: : 4/10/2026: bobasquith: 10 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3860528131; Occurrence Remarks: Adult crossing the road. 80F Escorted him towards hillside;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1847451664; Occurrence Remarks: Under log. My second time seeing a rattler in the Berkeley Hills, in the exact same wood pile, no less! Looks like I know where Ill be going more often this summer (and where other people should be avoiding more often too haha).;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1847505661; Occurrence Remarks: Couple came to a dead stop in front of us on trail - always a good sign for a rattler. Tried to keep it from grass exit before @catchang arrived but...rattling rattle said, Back off, Robberfly! :?;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 3874009687; Occurrence Remarks: No wounds or clear cause of death.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3873305126; Occurrence Remarks: Gorgeous snake! It may look like I am very close, but I am using a zoom lens. I stayed far enough away that snake did not change its behavior, it just kept noodling along.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 1848771697; Occurrence Remarks: You save a rattler from the road and all it can do is slither away to safety.;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 1850941082; Occurrence Remarks: Very small, maybe 18 inches long, rattlesnake seen along the trail between Yosemite Lodge and Mirror Lake.;; Coordinate Uncertainty in Meters: 1347.00000.

GBIFID: 1850962051; Occurrence Remarks: Very small, no rattles, possibly a juvenile with distinct contrasting colors.;; Coordinate Uncertainty in Meters: 269.00000.

GBIFID: 1850976493; Occurrence Remarks: When you have a cooperative rattler, best to get a few angles...;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 1880508702; Occurrence Remarks: Not the best photo, but you can see its rattle if you look. My son walked right by it--he was walking 1st in this 3 wide slot and didnt notice it. By the time I got to it, it was rattling pretty vigorously and moved into this mini alcove.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3915531647; Occurrence Remarks: Juvenile, rattled;; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.748454, -121.708335: : 4/2/2026: PATRICK WHIPPLE: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 188.00000.

Contra Costa, California: 37.816701, -121.822896: : 4/20/2019: Professor Brian Todd at UC Davis: 20 Apr 2019 :

GBIFID: 4014856878; Occurrence Remarks: Dead ≡ƒÿó;; Coordinate Uncertainty in Meters: 74.00000.

GBIFID: 4022256320; Occurrence Remarks: Scary;; Coordinate Uncertainty in Meters: 110.00000.

GBIFID: 4028890919; Occurrence Remarks: ≡ƒÿóI see so many of these dead in my neighborhood;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 1092897099; Occurrence Remarks: Commonly seen in the Grand Canyon of the Tuolumne.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 1891336052; Occurrence Remarks: resting within a badger burrow;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1891336334; Occurrence Remarks: two adults in a mating battle;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4096997737; Occurrence Remarks: Spotted on the trail 1/4 mile north of Eagle Peak up on the summit ridge before it moved into the bush. Did not rattle.;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 4901903646; Occurrence Remarks: Is a type of rattlesnake...;; Coordinate Uncertainty in Meters: 2134.00000.

GBIFID: 1901065330; Occurrence Remarks: Two rattlesnakes mating on the trail;; Coordinate Uncertainty in Meters: 186.00000.

GBIFID: 1305113072; Occurrence Remarks: diamondback-looking/ unfortunate roadkill;; Coordinate Uncertainty in Meters: 23305.00000.

GBIFID: 4130093445; Occurrence Remarks: Top center of photo;; Coordinate Uncertainty in Meters: 1607.00000.

GBIFID: 4130002108; Occurrence Remarks: A dark form;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4130303727; Occurrence Remarks: Found 4 rattlesnakes living in these cracks. This is out at Three Peaks off one of the dirt roads.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4145241792; Occurrence Remarks: Just outside the park;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4414321042; Occurrence Remarks: 1 of 2 observed;; Coordinate Uncertainty in Meters: 5187.00000.

GBIFID: 4414316436; Occurrence Remarks: Juvenile Northern Pacific Rattlesnake basking on rock;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4846792086; Occurrence Remarks: Rattling loudly while escaping to its burrow because I startled it.;; Coordinate Uncertainty in Meters: 312.00000.

GBIFID: 4424406780; Occurrence Remarks: Old Borges Ranch, Contra Costa County, CA;; Coordinate Uncertainty in Meters: 206.00000.

GBIFID: 1135353076; Occurrence Remarks: Diamond head and rattles with alternating brown and yellow rings similar to a California King Snake. About 30 inches in length.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4424407295; Occurrence Remarks: This was a good reminder that a flashlight is a convenience *and* a safety device.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1135353491; Occurrence Remarks: I heard something move slowly up ahead and decided to turn my lamp on. I was lucky I did because we found this guy. And right after getting a picture of him we found another scorpion.;; Coordinate Uncertainty in Meters: 9102.00000.

GBIFID: 1143533485; Occurrence Remarks: From past files . This individual was on a small embankment ( unseen ) and fell off to my surprise when a friend and I walked by . We jumped sideways a few feet and this large snake was not happy .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4512191969; Occurrence Remarks: Under log.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 891062828; Occurrence Remarks: Species from Western North America Common name: Northern Pacific Rattlesnake Photographed in Donner Canyon, Mt. Diablo, Contra Costa County, California;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4607175278; Occurrence Remarks: Along bolinas ridge trail in Mt. Tam state park;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4606985213; Occurrence Remarks: I tried to not disturb this bonding pair.;; Coordinate Uncertainty in Meters: 1500.00000.

GBIFID: 4855521869; Occurrence Remarks: Prairie Rattlesnake (Crotalus viridis viridis); Pine Creek Road, Dixie NF, N of Escalante, UT;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4855250933; Occurrence Remarks: Connolly Ranch;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4868053228; Occurrence Remarks: Fun Fact: I almost stepped on this individual while not looking where I was going. Being bitten by a venomous snake would have most likely been an inconvenient and sub-optional siutation to find myself in;; Coordinate Uncertainty in Meters: 213.00000.

GBIFID: 4867984812; Occurrence Remarks: First one Ive seen this year.;; Coordinate Uncertainty in Meters: 189.00000.

GBIFID: 4867628533; Occurrence Remarks: What kind of snake is this! Rattlesnake or Gopher Snake?;; Coordinate Uncertainty in Meters: 2082.00000.

GBIFID: 4872619195; Occurrence Remarks: Taking a snooze while temps about 64F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4872563709; Occurrence Remarks: Pretty large, maybe just under 3 feet long;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4875562153; Occurrence Remarks: I am trying to find out the specific species this is. Any help?;; Coordinate Uncertainty in Meters: 8436.00000.

GBIFID: 4875039581; Occurrence Remarks: Bottle pictured for scale;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 4892112647; Occurrence Remarks: In serpentine barren;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4891679578; Occurrence Remarks: Less than 3 feet/ 1 meter in length. Caused quite the excitement on the busy hiking trail. He/she was very calm and was slithering in and around the rocks.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4901051941; Occurrence Remarks: On the Mary Bowerman trail.;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 4901338290; Occurrence Remarks: 4 rattle kernels on it.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4901401753; Occurrence Remarks: We were Nerding on wild flowers when my spouse saw this guy 8ΓÇÖ up the bank. Exciting to see.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4901102689; Occurrence Remarks: Very small juvenile, maybe slightly longer than a pencil;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4903757063; Occurrence Remarks: Found dead on side of road;; Coordinate Uncertainty in Meters: 4.00000.

San Joaquin, California: 37.755508, -121.469951: : 7/3/2024: Jeremiah Degenhardt: 3 Jul 2024 :

San Joaquin, California: 37.772102, -121.49266: : 7/3/2024: Jeremiah Degenhardt: 3 Jul 2024 :

GBIFID: 4910794719; Occurrence Remarks: Dead on road DOR;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4919429530; Occurrence Remarks: Roadkill :( near park entrance;; Coordinate Uncertainty in Meters: 611.00000.

GBIFID: 4919322122; Occurrence Remarks: DOA on side of road near other roadkill presumed also hit by a car;; Coordinate Uncertainty in Meters: 205.00000.

Contra Costa, California: 37.85439, -121.93123: : 8/8/2024: Dan Fitzgerald (Fitz): 8 Aug 2024 :

GBIFID: 4923935527; Occurrence Remarks: roadkill :(;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891140138; Occurrence Remarks: Found dead in a stream;; Coordinate Uncertainty in Meters: 9907.00000.

GBIFID: 4926192752; Occurrence Remarks: What are they doing? Mating or two males fighting to mate with a female?;; Coordinate Uncertainty in Meters: 5874.00000.

GBIFID: 2238932177; Occurrence Remarks: This little beauty was coiled up as you see about 2-3 meters from where we were having lunch. The coil was about 3 inches high and 4-5 inches across (estimate- I wasnΓÇÖt going to approach it with a ruler). The head is poking out from under the top coil.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4937003995; Occurrence Remarks: 3 live individuals, two babies, one gravid female;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4950517776; Occurrence Remarks: Seen eating a ground squirrel off the side of the trail;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4953114706; Occurrence Remarks: 1m from dead mouse. Didnt see any wounds but presumably bitten by snake. Moved closer to snake, returned 20 minutes later and it was eating it;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4952208671; Occurrence Remarks: Same as https://www.inaturalist.org/observations/243934131 I think;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4953129938; Occurrence Remarks: Died from car injury;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4954712791; Occurrence Remarks: 70 degrees basking by a large hole (to which it retreated);; Coordinate Uncertainty in Meters: 3130.00000.

GBIFID: 4973954254; Occurrence Remarks: 70 degrees same individual as last weekend and its hole;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4973954290; Occurrence Remarks: second individual trail crossing super dry stretch of days;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3391655313; Occurrence Remarks: Looked like Crotalus oreganus;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5062977727; Occurrence Remarks: 1;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2251952724; Occurrence Remarks: less than a foot long;; Coordinate Uncertainty in Meters: 268.00000.

GBIFID: 5069998430; Occurrence Remarks: Juvenile Below log;; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.9269, -122.1431: : 3/1/2025: Guillermo Roque: 1 Mar 2025 :

Contra Costa, California: 37.927, -122.1425: : 3/1/2025: Guillermo Roque: 1 Mar 2025 :

GBIFID: 5087686067; Occurrence Remarks: F├⌐lix 59 F;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5087720989; Occurrence Remarks: Juvenile on the trail 60F;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5108404555; Occurrence Remarks: 54 F same individual as https://www.inaturalist.org/observations/267771611 we observed together;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5134352791; Occurrence Remarks: Western rattlesnake?;; Coordinate Uncertainty in Meters: 4874.00000.

GBIFID: 5134767360; Occurrence Remarks: These are screen grabs from a video. Surprised me on the trail yesterday. No warning rattle. But didnΓÇÖt appear alarmed. Just slowly slithered away off the trail.;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 891154781; Occurrence Remarks: Just after the Western Yellow-bellied Racer we found this rattler stretched along the side of the trail, not moving. It must have been sleeping, as it never stuck out its tongue while we photographed it. I prodded it with a stick to see if it was still alive and it slowly woke-up, smelled around a bit and shuffled off the trail. After asking several experts at work, the conclusion is that it was probably sick, especially looking at its lack of muscle tone along the ground. :(;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153026095; Occurrence Remarks: Fran 70F;; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.87521, -121.92583: : 5/2/2025: Dan Fitzgerald (Fitz): 2 May 2025 :

GBIFID: 5168028921; Occurrence Remarks: This was genuinely distressing to watch! I heard and saw an upset ground squirrel on a rock formation. I followed its gaze to see a rattlesnake eating a ground squirrel below. Eventually baby ground squirrels came and nursed on the adult. I wonder if the victim was one of her babies? Edit: looking at the photos and from what I saw, I think the victim was actually an adult ground squirrel.;; Coordinate Uncertainty in Meters: 108.00000.

GBIFID: 5167208630; Occurrence Remarks: Approximately 36-40 inches long, 70F degrees sunny day. Found under log next to path. Did not rattle or show any aggressive/defensive displays.;; Coordinate Uncertainty in Meters: 104.00000.

GBIFID: 5167256663; Occurrence Remarks: Almost stepped on this bad boy;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5166969286; Occurrence Remarks: Tonight was an absolute disaster. They closed down many lanes on the highway so a lot of cars were taking these back roads instead, which normally have only a few people driving through them, so we observed over a hundred cars passing through here within a short amount of time. This happened on the hottest night of this week, where more reptiles were on the roads and there were numerous DOR snakes here. One of my friends told me he saw over 15 of them and that he observed two snakes get killed right in front of him.;; Coordinate Uncertainty in Meters: 236.00000.

GBIFID: 5167010385; Occurrence Remarks: Tonight was an absolute disaster. They closed down many lanes on the highway so a lot of cars were taking these back roads instead, which normally have only a few people driving through them, so we observed over a hundred cars passing through here within a short amount of time. This happened on the hottest night of this week, where more reptiles were on the roads and there were numerous DOR snakes here. One of my friends told me he saw over 15 of them and that he observed two snakes get killed right in front of him.;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 5168394532; Occurrence Remarks: Didnt think theyd be out over 6,500 ft!;; Coordinate Uncertainty in Meters: 261.00000.

GBIFID: 1291662446; Occurrence Remarks: On a field trip to the Marin headlands with Scott and Don Loarie. Scott thinks snake is in a mouse nest. Yum yum.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1269539724; Occurrence Remarks: on side of trail;; Coordinate Uncertainty in Meters: 889652.00000.

GBIFID: 5188364573; Occurrence Remarks: Pretty subtle pattern, approx 28-30 inches. 70F. Found next to a log that I found a different and larger rattlesnake under on a previous walk a couple weeks ago.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5205839081; Occurrence Remarks: 54┬░f and my lifer;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 5206767668; Occurrence Remarks: Found dead with wounds to its underside. Location is approximate, found near the shore while rafting Colorado River.;; Coordinate Uncertainty in Meters: 2300.00000.

GBIFID: 2294635848; Occurrence Remarks: appx 2 long; clearly saw rattle although it isnt in this photo;; Coordinate Uncertainty in Meters: 15.00000.

Contra Costa, California: 37.9169, -121.9392: : 7/2/2025: gnarlyshields: 2 Jul 2025 :

GBIFID: 1265581148; Occurrence Remarks: I was about 1 ft from stepping on this handsome devil.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5230753077; Occurrence Remarks: Not sure at all, going with ML suggestion, especially at this location, since Im not super familiar with the Sierran fauna. Please dont confirm unless knowledgeable of the local fauna of Yosemite/Sierra Nevadas of CA.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1265897637; Occurrence Remarks: Next to water`s edge . Too close for comfort . My first for Briones Regional Park .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1265897810; Occurrence Remarks: Recent road-kill (unfortunately).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2350382392; Occurrence Remarks: A fairly large individual .;; Coordinate Uncertainty in Meters: 104.00000.

GBIFID: 2366099048; Occurrence Remarks: About 30-35cm long, 2.5cm widest diameter. Seen on warm concrete about 10pm.;; Coordinate Uncertainty in Meters: 129.00000.

GBIFID: 891058825; Occurrence Remarks: We found this poor little guy dead on the road. Only one little button!;; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.893947, -122.024536: : 5/19/2018: calwildlifeenthusiast: 19 May 2018 :
GBIFID: 2429276862; Occurrence Remarks: Pictures of two different rattlesnakes. (Second rattlesnake found on September 20th, 2019);; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 2429592071; Occurrence Remarks: I captured these two males fighting in Shell Ridge. I filmed for 16 minutes. The vanquished male bit the victor just before curling up in defeat. Both survived. You can see a spot of blood on the head in the third photo. After they both rested a bit, they each slithered off in different directions. I did not spy the females den, but she was no doubt in the vicinity. I had snake expert Harry Greene view and confirm the video. I was surprised by the number of Youtube videos out there describing this behavior as mating. I thought they were mating at first as well.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1272116468; Occurrence Remarks: From past files . I took the main photo from nearly ground level , only a few feet from the snake .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 2445105387; Occurrence Remarks: This small snake, so well camouflaged by the shade of the chamise twigs, might have been easy to step on. I canΓÇÖt really explain it, but my brainΓÇÖs search image recognition stopped me before I realized the snake was there.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2451744982; Occurrence Remarks: Juvenile on side of trail.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 891066027; Occurrence Remarks: 100 Species!!! Okay heres a good one to celebrate. How many snakes do you see? ;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2456543327; Occurrence Remarks: On gravel road. ~1ft. Not sure it shows in the photo, but it had made itself very flat to have maximum surface area exposed to the sun.;; Coordinate Uncertainty in Meters: 5585.00000.

GBIFID: 891723658; Occurrence Remarks: As I was taking pictures of the bees and crab spiders I got a bit of a gitchy feelin and turned around. Lo and behold, this beautiful rattler was five feet behind me at the creekside! It was very relaxed, just stretched out and waiting for me to leave. As I got closer to take pictures, it did nothing but flick its tongue in and out every time I moved. Totally chill, and a shared moment. One of my favorite snake encounters. Short video I shot: https://vimeo.com/71800532;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 2574232649; Occurrence Remarks: On campus!!!;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 1305154432; Occurrence Remarks: Nice, beefy, melanistic one found by @danielled83.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2576485123; Occurrence Remarks: Sitting on the trail on a cold morning. Barely moved when we almost stepped on it!;; Coordinate Uncertainty in Meters: 352.00000.

GBIFID: 1306589667; Occurrence Remarks: Tonys persistence pays off yet again.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2603292349; Occurrence Remarks: Under a rock.;; Coordinate Uncertainty in Meters: 123.00000.

GBIFID: 2603333574; Occurrence Remarks: adult;; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.926903, -122.144255: : 4/15/2020: Analisa Shields-Estrada: 15 Apr 2020 :

GBIFID: 2611189937; Occurrence Remarks: Was green and very faint white patten.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2611023163; Occurrence Remarks: Dead on Road;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2611067750; Occurrence Remarks: Juvenile (roadkill);; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2619880872; Occurrence Remarks: dying on the road.;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 2620064510; Occurrence Remarks: Ventral and dorsal scales found in raptor pellet; the size, color, and keeled nature of the dorsal scales in particular are suggestive of rattlesnake.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2626636348; Occurrence Remarks: Easily the largest pacific rattler IΓÇÖve seen in the park. This adult had to be at least 4 ft in length with a good couple inches of girth around itΓÇÖs belly. I had never seen a snake move so sluggish in my life (especially with a human near its tail end) until watching this rattler head down the mountain. Lacking any fluidity in its movement, the snake headed for a small stream that ran across the trail ahead of me. Once the rattler reached the water it stopped to drink for what had to be at least 10 minutes non-stop. Thinking this snake had just recently left its burrow from its brumation period. Maybe its first taste of water for the season.;; Coordinate Uncertainty in Meters: 285.00000.

GBIFID: 2634379860; Occurrence Remarks: 12ΓÇ¥ long juvenile;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 2641505850; Occurrence Remarks: Basking on road; retreated quickly with violently writhing motion when approached; reverted to less frantic S-motion once it was off the asphalt. Estimated length 80cm.;; Coordinate Uncertainty in Meters: 58.00000.

GBIFID: 2988471472; Occurrence Remarks: At the Devils Garden parking lot.;; Coordinate Uncertainty in Meters: 123952.00000.

GBIFID: 2803101207; Occurrence Remarks: Very small, could fit in my cupped hands;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2818594403; Occurrence Remarks: Roadkill collected;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 2818824416; Occurrence Remarks: #4 tonight.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2823285802; Occurrence Remarks: Relocated away from cabins by resident. About 2 in length.;; Coordinate Uncertainty in Meters: 983.00000.

GBIFID: 2826134893; Occurrence Remarks: Multi-tool is 9 inches long, so the casting is about 21+ inches.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 1455575583; Occurrence Remarks: Roadkilled;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2850645898; Occurrence Remarks: Does anybody know if theyre mating or if its 2 males fighting? Video and observation by @ernestrc;; Coordinate Uncertainty in Meters: 18180.00000.

GBIFID: 2850564238; Occurrence Remarks: so tiny!;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 891782683; Occurrence Remarks: Found this awesome Northern Pacific Rattlesnake (Crotalus oreganus oreganus) in a field in Briones Regional Park, just coiled up and taking a nap. After some photo taking it got a little restless and stood up a bit. First rattler of the year! Briones Regional Park. California.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899951829; Occurrence Remarks: Was in the process of dying horribly. Still shook its tail slightly as I approached. Very sad.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 899952658; Occurrence Remarks: My first rattler of the year, an adorable little yearling. Only one seen during the day, not part of one of the formal surveys.;; Coordinate Uncertainty in Meters: 112.00000.

GBIFID: 2859947098; Occurrence Remarks: triangle shaped head, scaly, brown;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2860236423; Occurrence Remarks: I went on a hike with my dad who relocates snakes and we spotted a rattlesnake in shell ridge by my house;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 891073959; Occurrence Remarks: Nice chunky rattler we found under a tire. Heres some cool video Tony shot: https://vimeo.com/39130250;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 1500337527; Occurrence Remarks: Castle Rock Regional Park;; Coordinate Uncertainty in Meters: 258.00000.

GBIFID: 2868204392; Occurrence Remarks: long, tan colored;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1500339235; Occurrence Remarks: This guy wouldnt leave the trail, so I didnt make it to Mt. Olympus today.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1500351972; Occurrence Remarks: Young ones are sooo purty.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1562933803; Occurrence Remarks: This little one was basking in the middle of a narrow trail. As I was photographing it, to other hikers approached from behind, so I warned them about the rattler. Ive never really had a bad rattlesnake interaction with others on the trail, but I was still pleased and relieved they were totally not panicked and were even eager to take photos.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2901781744; Occurrence Remarks: Rattlesnake in grand staircase-escalante national monument;; Coordinate Uncertainty in Meters: 7995.00000.

GBIFID: 891075592; Occurrence Remarks: I walked right over this little baby rattler and my sister almost did the same. Apparently she has sharper eyes. After taking my pics we walked down the trail and I talked my sisters ear off about how awesome rattlesnakes are. Hey! a voice called out from behind us, Is this your camera? Apparently in my excitement I just left it on the trail, and this poor, kind dude ran down the trail to return it to me. Classic.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2981087281; Occurrence Remarks: location is only an estimate;; Coordinate Uncertainty in Meters: 7647.00000.

GBIFID: 1571096540; Occurrence Remarks: In Yosemite National Park along trail to the Vernal Fall footbridge;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1571134460; Occurrence Remarks: Beautiful and big rattlesnake shed found by a rock. The snake must be super cool.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891058209; Occurrence Remarks: Yay! I havent seen a rattlesnake in FOREVER. This one was in a ditch on the side of the road. We found it ΓÇª by finding other people looking at it. This location is approximate. I know it was after the gate and before the hill really started, but I forgot to turn on my GPS.;; Coordinate Uncertainty in Meters: 1469.00000.

GBIFID: 3079494358; Occurrence Remarks: Ooo, a rattlesnake! This one hid underneath my backpack when I stopped for a break. Little bugger scared me.;; Coordinate Uncertainty in Meters: 8289.00000.

GBIFID: 1572387177; Occurrence Remarks: My first rattlesnake sighting in the Berkeley Hills!!! I saw it out in the middle of the trail, chilling for the most part. It looked relatively young, no more than 2ft or so in length. I watched it for a good half hour and alerted other hikers to its presence before it slithered into a wood pile/woodrat nest adjacent to the trail. Im pretty sure I heard plenty of rodents scurrying in there, which would provide good hunting for this fellow.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 1586109224; Occurrence Remarks: Found and relocated to safe area;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 923921121; Occurrence Remarks: Walked right by this tiny rattler who was coiled-up right on the trail, but luckily the person behind me spotted it - my first baby rattlesnake! I tried to get closer for better pics but it got scared, struck at me, and slithered off-trail, shaking its tiny rattle. Adorable.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 923925483; Occurrence Remarks: After six years of hiking here I FINALLY got my rattlesnake.;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1640067097; Occurrence Remarks: Second rattler Ive seen in Sibley. Not really how I like to find them. Beautiful young one.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3112414119; Occurrence Remarks: A juvenile rattlesnake;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3113536617; Occurrence Remarks: Spent the whole day looking for a rattler and found this guy just a few feet away from where I parked;; Coordinate Uncertainty in Meters: 974.00000.

GBIFID: 1640091769; Occurrence Remarks: Mature rattlesnake found and relocated. Shovel was a barrier between it and myself, we did not kill it. Moved to a safer location for both it and the people in the area.;; Coordinate Uncertainty in Meters: 136.00000.

GBIFID: 3113479821; Occurrence Remarks: Almost stepped on him.;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 3113271861; Occurrence Remarks: A baby rattlesnake;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1024192392; Occurrence Remarks: The picture was taken from a time lapse I made with a GoPro outside of this rattlesnake den. Heres the video: https://vimeo.com/101055833;; Coordinate Uncertainty in Meters: 6467.00000.

Contra Costa, California: 37.886467, -121.991542: : 5/19/2021: Ixchel Gonzalez-Ramirez: 19 May 2021 :

GBIFID: 3124600592; Occurrence Remarks: DCP_4605;; Coordinate Uncertainty in Meters: 250.00000.

GBIFID: 3124594839; Occurrence Remarks: S120_22500;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3124627684; Occurrence Remarks: S120_30082;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3302462120; Occurrence Remarks: Dead in the road. ΓÇ£BubblesΓÇ¥ on end of tail - I was confused about this snake.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891081945; Occurrence Remarks: This was my first time seeing rattlesnakes in the wild! Two individuals, an adult and a sub-adult, were found under a wooden board on a hillside near a stream. These are the same rattlesnakes that Ken-ichi Ueda observed on the same day. (In fact, I believe they were his find.);; Coordinate Uncertainty in Meters: 1963.00000.

GBIFID: 3302215715; Occurrence Remarks: Mid day, high 70s, inside of a nice cool culvert;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3301803408; Occurrence Remarks: Dead on road DOR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3302305398; Occurrence Remarks: Alive on road AOR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3455320142; Occurrence Remarks: behind the grass;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3302177577; Occurrence Remarks: It trapped us on a trail;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1024206456; Occurrence Remarks: Found by the big firepit and bleachers at Live Oak Campground. We nudged it out of the camping area and it coiled up nicely under an oak.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3307291850; Occurrence Remarks: RX10_13952;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3333302114; Occurrence Remarks: Photo courtesy of Sam Stromberg;; Coordinate Uncertainty in Meters: 829.00000.

GBIFID: 3337598298; Occurrence Remarks: Two rattlers fighting;; Coordinate Uncertainty in Meters: 49.00000.

Contra Costa, California: 37.895716, -122.026787: : 4/8/2026: ecodanielle: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 1119.00000.

GBIFID: 3384162685; Occurrence Remarks: Yosemite Falls Trail;; Coordinate Uncertainty in Meters: 333.00000.

GBIFID: 3399291768; Occurrence Remarks: Newborn?;; Coordinate Uncertainty in Meters: 134.00000.

Contra Costa, California: 37.91228, -121.937198: : 3/21/2026: Ben Sims: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Mariposa, California: 37.719953, -119.5438: : 8/15/2025: noah_w17: 15 Aug 2025 ; Coordinate Uncertainty in Meters: 79.00000.

Alameda, California: 37.874065, -122.240286: : 8/22/2025: sprtsfn98: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 798.00000.

Mariposa, California: 37.744738, -119.562112: : 8/22/2025: misty-morning: 22 Aug 2025 ; Coordinate Uncertainty in Meters: 23.00000.

Contra Costa, California: 37.857763, -122.201247: : 7/3/2026: Alan Siegel: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Contra Costa, California: 37.877083, -121.982095: : 3/27/2026: Entrobard: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Alameda, California: 37.698475, -121.712899: : 8/23/2025: Parsa Fard: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Tuolumne, California: 37.9351, -119.495667: : 8/19/2025: ieatfish: 19 Aug 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Alameda, California: 37.69533, -121.59028: : 8/24/2025: Richard Hasegawa: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 20.00000.

Mariposa, California: 37.745758, -119.60611: : 8/18/2025: olocin: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 615.00000.

Occurrence Remarks: Animal was dead when spotted. Row of park visitors cars was avoiding it as it looked alive for untrained eye but one of the cars intentionally swiveled to run it over.; Coordinate Uncertainty in Meters: 0.11000.

Mariposa, California: 37.726197, -119.556565: : 9/4/2025: jagut95: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.852828, -122.190338: : 9/5/2025: Alan Siegel: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Mariposa, California: 37.747178, -119.779305: : 7/13/2026: Richard Andrews: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.920153, -121.941955: : 9/13/2025: Eric Cameron: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Mariposa, California: 37.747422, -119.602188: : 7/18/2026: Ryan Donnelly: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Alameda, California: 37.746783, -121.726849: : 10/29/2025: shanec97: 29 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Mariposa, California: 37.746195, -119.605575: : 7/19/2026: Bryan J: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 283.00000.

Contra Costa, California: 37.919551, -121.93838: : 9/13/2025: Liz: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Alameda, California: 37.763549, -121.700598: : 3/13/2026: Nathan Davis: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.882745, -122.006998: : 4/19/2026: Debra Feammelli: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 242.00000.

Sonoma, California: 38.317403, -122.593675: : 10/23/2025: cloverchloe: 23 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Marin, California: 38.004406, -122.620562: : 10/7/2025: GinaGPark: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.94328, -121.991547: : 10/17/2025: Qadry Anthony: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.360345, -122.516358: : 10/17/2025: wildpuppy: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Napa, California: 38.255413, -122.211145: : 7/25/2026: Matt Smith: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Marin, California: 38.010147, -122.657686: : 3/30/2026: brycethebug: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Marin, California: 37.968853, -122.596755: : 7/26/2026: jordan loftin: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Sonoma, California: 38.365818, -122.552651: : 9/15/2025: reptile_galen: 15 Sep 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.23846, -122.423778: : 8/31/2025: reptile_galen: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Occurrence Remarks: Was living in dry stacked rocks around a backyard water feature, a small pond about 6 across. The pond has been home to two Red legged frogs for many years, but I havent seen them recently. Would a rattlesnake feed on them? Note: Ive contacted appropriate authorities to relocate the frogs but they declined.; Coordinate Uncertainty in Meters: 1002.00000.

Sonoma, California: 38.302487, -122.459647: : 9/13/2025: mikewitkowski: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 9.00000.

Marin, California: 38.08157, -122.59263: : 9/15/2025: christinefk: 15 Sep 2025 ; Coordinate Uncertainty in Meters: 193.00000.

Sonoma, California: 38.220564, -122.437755: : 2/27/2026: reptile_galen: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.236339, -122.584888: : 2/27/2026: reptile_galen: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

GBIFID: 4165812569; Occurrence Remarks: Interesting pattern, or lack of. About 2.5 ΓÇÿ;; Coordinate Uncertainty in Meters: 119.00000.

Marin, California: 37.956812, -122.622875: : 4/4/2026: brittneybochenek: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 4400113618; Occurrence Remarks: Location not exact. Emigrant Wilderness just east of Crabtree Trailhead.;; Coordinate Uncertainty in Meters: 582.00000.

GBIFID: 1901072552; Occurrence Remarks: On the right side of the picture if you zoom in is the obvious Rattler, the left is the head.;; Coordinate Uncertainty in Meters: 188.00000.

Sonoma, California: 38.303738, -122.42665: : 3/16/2026: Joshua Zupan: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Tuolumne, California: 38.080581, -119.865745: : 5/30/2026: Owen Ohlson: 30 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Sonoma, California: 38.29009, -122.454662: : 4/15/2026: reptile_galen: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.247872, -122.452432: : 4/15/2026: reptile_galen: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.337353, -122.504562: : 4/15/2026: reptile_galen: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Contra Costa, California: 38.000611, -121.693771: : 4/14/2026: shanec97: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: First time seeing one on the trail!; Coordinate Uncertainty in Meters: 11.10000.

Sonoma, California: 38.355469, -122.511032: : 4/16/2026: Alison Young: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 37.966888, -122.589945: : 4/18/2026: Andrew Abballo: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.112998, -122.440144: : 4/5/2026: nick_vine: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 28300.00000.

Marin, California: 37.980075, -122.606378: : 4/23/2026: wildcatdogs: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: DEAD Recent extensive fuels reduction human work party pulling mature scotch and French broom from steep hillsides surrounding the fire access road to create a wide fuel break. Work done when the soils were wet so the plants could be pulled roots and all. From the intensity of that work and the fact the dead snake observed right in the middle of it I suggest that the snake was killed on the spot when a human found it. There was caked dirt on the snakes head like it was hit with a work tool. The snake was partially inside a root cavity of a bay tree on the uphill side of the trail. Eye level. Color of the snake faded. Revisited this dead snake one day later and it was blanketed with ants and reduced in body size. Its being recycled into the habitat.; Coordinate Uncertainty in Meters: 19.00000.

Contra Costa, California: 37.957517, -121.863633: : 4/25/2026: felixw97: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.957523, -121.863646: : 4/25/2026: yongestation: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: November sighting 72F House of Felix; Coordinate Uncertainty in Meters: 62.00000.

Contra Costa, California: 37.940239, -121.996307: : 5/2/2026: nicgirl1106: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.351515, -122.60413: : 5/22/2026: ajanulaw: 22 May 2026 ; Coordinate Uncertainty in Meters: 55.00000.

Occurrence Remarks: 61 degrees F; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: My wife saw this rattlesnake on the trail from the glimmer shine of the sunlight hitting its rattle. Looks like the same one I saw here several weeks ago. Same general spot. Conditions. Coolong coastal breeze combined with nice warm sun light. Low 60┬░s This snake was in the sun. My wife said it was in a straight posture and crossing the fire road but then went into a coil as she approached.; Coordinate Uncertainty in Meters: 1.00000.

Tuolumne, California: 38.18567, -120.125917: : 5/12/2026: Jen Pagel: 12 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.360437, -122.519188: : 5/27/2026: brock: 27 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Tuolumne, California: 38.110206, -119.881888: : 5/24/2026: Robin White: 24 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Tuolumne, California: 38.118451, -119.857726: : 5/23/2026: Robin White: 23 May 2026 ; Coordinate Uncertainty in Meters: 202.00000.

Sonoma, California: 38.360445, -122.51918: : 5/27/2026: Joshua Zupan: 27 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Was sunning in the road with a turkey vulture watching! Perhaps the TV expected a car to make dinner for it? Got it off the road with an umbrella. Very passive snake, first curled up and hid its head. Never tried to strike even though I had to push it multiple times to get it off the road.; Coordinate Uncertainty in Meters: 0.11000.

Tuolumne, California: 38.200081, -119.982017: : 6/17/2026: phocidae: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 3881754970; Occurrence Remarks: At Sindicich Creek, Toyon Trail, Briones,;; Coordinate Uncertainty in Meters: 50.00000.

Tuolumne, California: 38.206557, -119.975038: : 6/5/2025: danducky: 5 Jun 2025 ; Coordinate Uncertainty in Meters: 271.00000.

Occurrence Remarks: Heard it rattle, so Im pretty sure its a rattlesnake.; Coordinate Uncertainty in Meters: 0.11000.

Contra Costa, California: 37.979205, -121.855483: : 2/14/2026: Brian Tremback: 14 Feb 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Contra Costa, California: 37.942134, -121.876474: : 9/17/2025: Lora Roame: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 28329.00000.

Occurrence Remarks: Baby, no rattle yet, very dangerous, was right in the middle of the trail while biking, stay safe; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: First appearance 2026 60F; Coordinate Uncertainty in Meters: 28329.00000.

Contra Costa, California: 37.958592, -122.131089: : 3/7/2026: mmyriapodd: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Sonoma, California: 38.280661, -122.463045: : 3/7/2026: vicsch: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Napa, California: 38.36568, -122.387878: : 3/11/2026: Carole Meredith: 11 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Run over; Coordinate Uncertainty in Meters: 5.00000.

Contra Costa, California: 37.950929, -122.136458: : 3/15/2026: Isabel Navarro: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Sonoma, California: 38.342323, -122.601825: : 3/15/2026: Dave Manley: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 1002.00000.

Marin, California: 37.954913, -122.58013: : 3/16/2026: Oliver E: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.340033, -122.594203: : 4/30/2026: Nancy Kelley: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.364078, -122.524149: : 3/11/2026: Sam Heckler: 11 Mar 2026 ; Coordinate Uncertainty in Meters: 1831.00000.

Marin, California: 37.99311, -122.61613: : 3/27/2026: syd_morris: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 37.00000.

Wayne, Utah: 38.317505, -111.302278: : 5/25/2025: MJ Sutherland: 25 May 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Sonoma, California: 38.324158, -122.494818: : 9/22/2025: reptile_galen: 22 Sep 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

GBIFID: 3903381289; Occurrence Remarks: Approx 1 ft in length. Active, moving, coiling. Looked like newly born.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3889187219; Occurrence Remarks: 3 foot snake.;; Coordinate Uncertainty in Meters: 4.00000.

Tuolumne, California: 38.072504, -120.250229: : 4/14/2026: Sierra Vasquez: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 28300.00000.

Calaveras, California: 38.228753, -120.707833: : 4/30/2026: susanalford: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Napa, California: 38.264753, -122.23413: : 3/31/2026: tovyawager: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 28.00000.

Occurrence Remarks: This snake was positioned exactly where he would be unseen in dappled light/shade and right on the path to get a good chance at prey.; Coordinate Uncertainty in Meters: 1.00000.

Sonoma, California: 38.254062, -122.438021: : 9/15/2025: reptile_galen: 15 Sep 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Contra Costa, California: 37.955383, -121.865212: : 5/3/2026: Steve Smith: 3 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Marin, California: 37.942059, -122.607332: : 3/31/2026: Andrew Fischer: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 75.00000.

Tuolumne, California: 37.961283, -119.773033: : 5/30/2025: Matt Reala: 30 May 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Marin, California: 38.007592, -122.612563: : 9/25/2025: Liz Gottlieb: 25 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: thunder, lightning and brief showers or light rain. Warm and humid.; Coordinate Uncertainty in Meters: 8.00000.

Sonoma, California: 38.332262, -122.582505: : 5/14/2026: emaliebrandt: 14 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Contra Costa, California: 37.970308, -121.900175: : 5/11/2026: Anthony Ye: 11 May 2026 ; Coordinate Uncertainty in Meters: 28329.00000.

Marin, California: 38.021931, -122.575325: : 5/16/2026: Victoria Testa: 16 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Sonoma, California: 38.21078, -122.550442: : 3/29/2026: reptile_galen: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Contra Costa, California: 37.952555, -121.854003: : 3/17/2026: Brian Tremback: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Dead, Width of compression injury, 1.5, split outer skin, suggests a roll-over bicycle impact or maybe struck with garden tool? My wife found it late at night in the center parking area at the trailhead. It might have been a neighbor dispatching a rattlesnake found on property which has happened here before. We have not yet seen a live rattlesnake this season in the nearby preserve but we are starting to see other reptiles. The contrasting tones of the rattlesnakes body seemed muted as if death occurred many hours earlier. We carefully removed it from the parking area. We learned that the muscles of the jaw of a dead rattlesnake can still react but this dead rattlesnake was completely limp.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Unfortunately our first rattlesnake sighting of the year was a dead juvenile. It has a visible injury and it was in the road at the top of a residential street that dead ends at a Park where we see many rattlesnakes. Most likely it was hit by someone on a bike or possibly a car. But also maybe killed by a bird. Hard to know and sad to see. It looks like it died a few hours ago. It definitely wasnΓÇÖt there earlier today.; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: first baby of the season!; Coordinate Uncertainty in Meters: 4.00000.

Solano, California: 38.258055, -122.141639: : 3/20/2026: athall: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 37.957161, -122.639294: : 3/21/2026: Cricket Raspet: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Marin, California: 37.978703, -122.615387: : 3/22/2026: Yuexin Kelsey Jiang: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: 60 degrees F; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Observed in the ditch beside the fire road. I was looking down with my headlamp for beetles and worms and lo and behold I saw a beautifully patterned juvenile rattlesnake. This was in the serpentine area.; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.946512, -121.833702: : 3/21/2026: Annie Zell: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Contra Costa, California: 37.96201, -122.140956: : 3/23/2026: gnarlyshields: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Sonoma, California: 38.299614, -122.45725: : 3/22/2026: Sam Heckler: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 191.00000.

Marin, California: 38.166177, -122.822503: : 3/25/2026: sofiamicci: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: A youngster under a big log; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.348453, -122.552413: : 3/25/2026: Perla M.: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 38.166606, -122.817508: : 3/26/2026: Erin Epidote Enfield: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 55.00000.

Marin, California: 38.081847, -122.596345: : 3/26/2026: Wendy S Dreskin: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 37.953283, -122.606548: : 3/27/2026: Natalie Clark: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 893.00000.

Marin, California: 38.081638, -122.59651: : 3/26/2026: Paul Barnett: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Marin, California: 37.949863, -122.573158: : 3/29/2026: Travis: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Sonoma, California: 38.301517, -122.41805: : 3/29/2026: bdovester: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.257075, -122.594186: : 2/27/2026: reptile_galen: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.350328, -122.586333: : 4/2/2026: John Lynch: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Marin, California: 38.076692, -122.581963: : 4/4/2026: Coyote Crump: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Contra Costa, California: 37.945691, -122.193705: : 4/4/2026: elana_jimena: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 2209.00000.

Napa, California: 38.251653, -122.218217: : 4/4/2026: Matt Smith: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Contra Costa, California: 37.944672, -121.9749: : 3/29/2026: Michael Strom: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Marin, California: 38.018879, -122.731504: : 4/5/2026: badewitt: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 74.00000.

Calaveras, California: 38.364212, -120.511047: : 3/22/2026: derek_cloward: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Marin, California: 38.062352, -122.589468: : 4/5/2026: Patrick Carter: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 39.00000.

Marin, California: 37.948762, -122.612938: : 4/8/2026: xookapi: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: didnt rattle. not really fair. you guys are supposed to rattle.; Coordinate Uncertainty in Meters: 4.00000.

Contra Costa, California: 37.967255, -122.26483: : 10/3/2025: wildcatdogs: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Napa, California: 38.36524, -122.282275: : 7/12/2025: isa_world: 12 Jul 2025 ; Coordinate Uncertainty in Meters: 488.00000.

Marin, California: 38.090753, -122.646187: : 7/1/2025: tovyawager: 1 Jul 2025 ; Coordinate Uncertainty in Meters: 18.00000.

Sonoma, California: 38.299367, -122.527099: : 11/21/2025: reptile_galen: 21 Nov 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Marin, California: 38.038239, -122.623314: : 3/16/2026: Morgan Stickrod: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Occurrence Remarks: Dead; Coordinate Uncertainty in Meters: 19.00000.

Occurrence Remarks: I only got the tail end of this guy. I heard something moving in the grass and took a closer look. He didnΓÇÖt rattle at me, he just continued on his way; Coordinate Uncertainty in Meters: 3.00000.

Contra Costa, California: 37.957, -121.875908: : 6/5/2026: NickS: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Got it off the road. This one was a little fiesty.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Southern Pacific Rattlesnake because of wide band before rattles, but zone is for Northern Pacific?; Coordinate Uncertainty in Meters: 28270.00000.

Napa, California: 38.34083, -122.392412: : 6/7/2026: avephill: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.360942, -122.5243: : 6/4/2026: mnewhouser: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Sonoma, California: 38.297817, -122.529755: : 6/9/2026: jet: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: 69 degrees F at 9.45 pm and 86% humidity. Pretty uncomfortable for humans, but we figured it would be a fine evening for snakes! And this one did not disappoint!; Coordinate Uncertainty in Meters: 20.00000.

Marin, California: 38.001442, -122.655433: : 6/18/2026: David Greenberger: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Contra Costa, California: 37.97048, -121.833397: : 6/4/2026: ebrpd: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Tuolumne, California: 38.20023, -119.990028: : 6/22/2026: adamhichew: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Marin, California: 38.01899, -122.592969: : 6/16/2026: shannoncmorrow: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 53.00000.

Sonoma, California: 38.342323, -122.601825: : 6/27/2026: Dave Manley: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 1002.00000.

Contra Costa, California: 37.965648, -121.830447: : 10/8/2025: kimachziger: 8 Oct 2025 ; Coordinate Uncertainty in Meters: 57.00000.

Contra Costa, California: 37.958311, -122.142536: : 3/21/2026: ldmoore: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3466154619; Occurrence Remarks: Chilling in a tree;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 3466220344; Occurrence Remarks: Older photo.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 3466268531; Occurrence Remarks: Old photo.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 3746978049; Occurrence Remarks: This very small rattlesnake was under a small bit of tree bark at the Fairfield Osborn Preserve.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3747079803; Occurrence Remarks: About 2.5 ft. long, I counted 12 rattles on the tail.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3747090209; Occurrence Remarks: On Deer Park trail. Just a baby, no rattle sound.;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 3759529774; Occurrence Remarks: Just 1 seen.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3759951056; Occurrence Remarks: Northern Sonoma Mountain Regional Park trail to Jack London;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4597228710; Occurrence Remarks: Spotted while sitting on a becnch. Noticed the trail cam later so this snake is probably pretty well know.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3773120328; Occurrence Remarks: Turned over a dry but oak tree fragment in a rocky area. Did not move, did not hiss, did not rattle at all, except for breathing and tongue movement . approx 3.5 inch diameter body coil. Nearest antivenin for humans in Level 1 emergency Walnut Creek. Our nearest emergency rm here in Richmond, IΓÇÖve been told, does not stock it.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3785010558; Occurrence Remarks: This young snake senses the air with its tongue when I make large movements. It seems to never move its tongue when Im looking at it holding my camera and staying still.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3802579771; Occurrence Remarks: Same size as the one 10 days ago. A sibling? Relocated across the street.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3802399917; Occurrence Remarks: Heres a sight I dont see every day: a raven in the process of trying to kill and eat a slightly squashed juvenile rattlesnake. It backed off a bit while I took the photos, but returned to continue the attack as soon as I moved away.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3858422036; Occurrence Remarks: This baby rattler was hidden by my car tire. My dog and I stood there taking off his harness and leash having no clue just inches away was this scary thing.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3860529941; Occurrence Remarks: You can only see its tail in the photo;; Coordinate Uncertainty in Meters: 275.00000.

GBIFID: 3860497962; Occurrence Remarks: Smaller adult seen crossing a trail;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3858482989; Occurrence Remarks: Beautiful juvenile on a trail near a stream;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859922044; Occurrence Remarks: Found dead on a dirt pathway;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1847485656; Occurrence Remarks: I had not seen it until I had already put my backpack down. It did not move so I moved camp. In the morning, it was no longer there.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3859129228; Occurrence Remarks: Kent pump road, shed skin heading under some rocks;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1847553543; Occurrence Remarks: Mount Tamalpais Marin Municipal Water District hike: beginning at Deer Park, observed on the ridge at the start of the Hidden Meadow Trail after Six Points Trail junction;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3873816380; Occurrence Remarks: Air temperature 76 F. A cooling breeze was blowing. Looked like a full grown snake. Located in grass besides the trail.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3881792620; Occurrence Remarks: Some smoky road cruising to the NV border and back (and up the Cottonwood Canyon/Bodie road a ways too) shortly after sunset, before heading south to get out of the Oak Fire smoke. This was the only snake I saw, sitting in the middle of the road on the return leg. I helped him off the road, as people absolutely fly down this straightaway.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3881455927; Occurrence Remarks: A real beaut!!!! 4-5ft, thick like a rope;; Coordinate Uncertainty in Meters: 3464.00000.

GBIFID: 3881857514; Occurrence Remarks: Marine fog above us at 900 ft. Temperature in the mid sixties. Saw the rattlesnake while we were on the trail. It was in the grass along the edge of the trail. It was not active while we passed by.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3881858772; Occurrence Remarks: Very yellow! gorgeous snake;; Coordinate Uncertainty in Meters: 966.00000.

GBIFID: 3881399819; Occurrence Remarks: Video: https://www.youtube.com/watch?v=FDZTt9gKEQA;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3888712604; Occurrence Remarks: Subadult in the middle of a trail after scattered showers;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3892664577; Occurrence Remarks: Less than two feet long;; Coordinate Uncertainty in Meters: 139.00000.

GBIFID: 3903292919; Occurrence Remarks: At the bend in the road in the grass. Very loud tree cricket noise. Warm evening. Approx 72 degrees F;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 3912207897; Occurrence Remarks: Skin. Hard to tell with head and tail missing but pattern seems most consistent with a rattlesnake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3915345154; Occurrence Remarks: It was about three feet long .;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3915608743; Occurrence Remarks: Big rattle.;; Coordinate Uncertainty in Meters: 258.00000.

GBIFID: 3915615900; Occurrence Remarks: Noisy. Amongst fallen bark from a dead oak tree.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3915591865; Occurrence Remarks: We heard this snake while we were on the road, in woods, twenty feet away. It was rattling continuously which we had never heard before at Sobrante Ridge. We do not know why it was warning with a rattle. It kept rattling with only short breaks for over 30 minutes. I walked home to get a camera with flash and 200 mm lens and located the snake by following the direction of the rattle sound. I had a 200 mm lens.;; Coordinate Uncertainty in Meters: 354.00000.

GBIFID: 3915660437; Occurrence Remarks: Juvenile individual preying upon Western Fence Lizard;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3923342997; Occurrence Remarks: Picked up by Sonoma Reptile Rescue for relocation.;; Coordinate Uncertainty in Meters: 1002.00000.

GBIFID: 3925301314; Occurrence Remarks: Eleventh individual rattlesnake observation of the year. This one was a full grown adult. Appeared black from a distance under the light of the full moon.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1880583899; Occurrence Remarks: Canyonlands National Park Needles District;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3947646174; Occurrence Remarks: Little guy. Relocated across street.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1088948834; Occurrence Remarks: Found Rattle snake in log on madrone trail.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3966818392; Occurrence Remarks: Unusual dark morph of a Western Rattlesnake found in Contra Costa county, Briones Regional Park. Crotalus oreganus oreganus - Northern Pacific Rattlesnake. Was found near large ground squirrel population, and appears to have recently eaten one.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4046429309; Occurrence Remarks: If youΓÇÖre saying to yourself, ΓÇ£this person was not making excellent decisions that afternoonΓÇ¥, IΓÇÖd say I was just thinking that myself. Presumably I was trying to encourage it off the trail because thereΓÇÖs a lot of mountain bike traffic there, but I think it did not go as planned.;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 1898807211; Occurrence Remarks: It was dead, and completely mummified. Unknown rattler, in slot canyon 40 miles east of capitol reef national park;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 4116477512; Occurrence Remarks: Crotalus oreganus oreganus, on Hidden Meadow trail just before Shaver Grade trail;; Coordinate Uncertainty in Meters: 77.00000.

GBIFID: 4116307102; Occurrence Remarks: Road casualty≡ƒÿ⌐. About 2 ft. Six rattles;; Coordinate Uncertainty in Meters: 178.00000.

GBIFID: 4126765812; Occurrence Remarks: I think was a little baby rattler. About a foot long, a little thicker than a pencil. Not happy to see me.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4438792757; Occurrence Remarks: Under leaves, partial view-centered 1/3 up from bottom of image. IDed by park ranger.;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 4138161451; Occurrence Remarks: Can someone help me ID it?;; Coordinate Uncertainty in Meters: 184.00000.

GBIFID: 4137993209; Occurrence Remarks: Almost stepped on ΓÇÿem, but the snake was thankfully very polite, and rattled while raised up and slithering away. Blurry pictures because I was not about to get closer lol;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 4153364058; Occurrence Remarks: Photo credit to @eahuryn Almost stepped on ΓÇÿem but it was cold enough the snake just stayed curled up. Very polite snake - we were hiking and two of us walked over the snake and one of us was standing right next to ΓÇÿem before we saw ΓÇÿem, and the snake just stayed curled up, very chill lil friend.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4162283814; Occurrence Remarks: This observation is for the snake in the upper left. Found under a wide redwood plank in the brushy meadow that can be lifted with effort. My curiosity now looks like a Darwin-award application.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4162298735; Occurrence Remarks: Just barely stepped on its tailΓÇª. Was in reverie thinking of Navarretia viscidulaΓÇª Holy shnikees;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1920826740; Occurrence Remarks: Found by the marsh;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1931490217; Occurrence Remarks: Found at the top of the Ridge Loop;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4171563532; Occurrence Remarks: 3 to 4 feet long, dark grey/ light grey pattern, spade shaped head. Rattlesnake? Found in residential garden;; Coordinate Uncertainty in Meters: 57933.00000.

GBIFID: 1932338034; Occurrence Remarks: Found peacefully slithering in the Ed. Center courtyard;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4399944107; Occurrence Remarks: Altitude 6480ft, dark/black tongue;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4405271902; Occurrence Remarks: 73 degrees F. Snake left the trail so we could pass. No alarm rattle.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1978818125; Occurrence Remarks: Giant snake molt! Based on girth and patterning, IΓÇÖm guessing rattlesnake, but not 100% positive.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1944389588; Occurrence Remarks: A dark individual;; Coordinate Uncertainty in Meters: 2256.00000.

GBIFID: 1944389623; Occurrence Remarks: Removed from vegetable garden and released nearby;; Coordinate Uncertainty in Meters: 2256.00000.

GBIFID: 4414157566; Occurrence Remarks: Right on the trail, never flinched despite the paparazzi and dozens of other hikers;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 1945431422; Occurrence Remarks: gorgeous individual. About 75 miles south becomes the range of C. stephensi, and Im always on the lookout for potential integration. Still, this location is presumably all lutosus.;; Coordinate Uncertainty in Meters: 28300.00000.

GBIFID: 4424193944; Occurrence Remarks: I picked up the shed to see if I could discern a pattern but pattern had faded. I looked for a head on. the shed but could not find one.;; Coordinate Uncertainty in Meters: 548.00000.

GBIFID: 5139963871; Occurrence Remarks: Baby!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4465443749; Occurrence Remarks: I sadly had to kill this during the summer (somewhere around 5 months ago), because it was on the porch hunting near my dogs and little siblings. I ate it and it was delicious. My brother also wanted the skin. Its 29 here, without the head and rattle. At least it didnt go to waste;; Coordinate Uncertainty in Meters: 1369.00000.

GBIFID: 891123723; Occurrence Remarks: Found these western rattlesnakes (of some kind I believe) in the Emigrant Wilderness on a day trip. Dozens of them under several 1-3 inch horizontal gaps in large rock formations. These gaps provide long-term warmth due to the low conductivity of heat of the rocks and protection from potential predators and other dangers. Families with a range of sizes exist here. I was asked to not give the exact location of the site.;; Coordinate Uncertainty in Meters: 3411.00000.

GBIFID: 4597106653; Occurrence Remarks: 67 degree day resting in cluster of rocks adjacent to the trail;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4607557848; Occurrence Remarks: may be same individual as prior observation 58 degree sunny day;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4851892124; Occurrence Remarks: my neighbor killed this and my little brother wanted to keep the skin, so I nailed it to this board. It worked very well last time I had to kill one on the porch;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 1143563812; Occurrence Remarks: It crossed the trail through a sitting group of people without rattling.;; Coordinate Uncertainty in Meters: 688.00000.

GBIFID: 4852386757; Occurrence Remarks: rattling at us under a buckeye tree;; Coordinate Uncertainty in Meters: 80.00000.

Contra Costa, California: 37.956819, -121.84637: : 4/19/2024: whenitscoleoutside: 19 Apr 2024 :

GBIFID: 4868111372; Occurrence Remarks: 2 individuals, one noticed me and went underground so only the tail is visible;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4872603558; Occurrence Remarks: Black markings on tail were larger than the white. Had the pleasure of meeting this snake on a backpacking trip as we were setting up camp.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4872178159; Occurrence Remarks: Found decapitated;; Coordinate Uncertainty in Meters: 122.00000.

Tuolumne, California: 37.958428, -119.780608: : 6/3/2024: Camila Villagra-Riquelme: 3 Jun 2024 :

GBIFID: 4903988658; Occurrence Remarks: Why is it green??;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4903794576; Occurrence Remarks: 72┬░ First RS sighting for us in 2024. Other hikers have been reporting observations (at Sobrante Ridge Preserve) for a month or more. Really fat very plump. The pattern is on his back is very expanded and itΓÇÖs half in the shade half in the sun. I would estimate maybe a little bit under 3 feet. It alerted us to its presence. Dirt rd. at the place we sighted this snake cuts through sage scrub with yerba santa, orange monkey flower, gum plant, silk tassel, coffee fern. On the edge of grasslands.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4904068724; Occurrence Remarks: juvenile, about 18 total length;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4908555525; Occurrence Remarks: A big black rattle snake;; Coordinate Uncertainty in Meters: 1913.00000.

GBIFID: 4910635789; Occurrence Remarks: It was rattling. That sound is unlike any other. It went from a relaxed posed to a coiled pose and started focusing its attention towards me and the dogs. Nice to see a big rattlesnake. I accidentally stood right next to a rattlesnake in this location after sundown. Many gophers live in this area so the rattlesnakes must be successful catching animals here.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4923796619; Occurrence Remarks: Two males, we watched for 45 minutes. 1:30 min video on Flickr. https://flic.kr/p/2q8xMo7;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4924040780; Occurrence Remarks: Super Cool to see these two Northern Pacific Rattlesnakes tonight. This was at about 11.15 pm. From what I understand this is two males engaging in combat/dominance behavior. We watched them for over 45 minutes. They seemed totally oblivious to our presence even though we were close by and we were wearing bright headlamps. Finally, one of the snakes slunk off and then the remaining one suddenly seemed to notice us and rattled loudly;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 4923812059; Occurrence Remarks: Saw this rattlesnake yesterday evening looking out of a hole in the trail. When I retreated he/she went backwards into the hole and out of sight;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 4926349780; Occurrence Remarks: GRASSLANDS on ridge on dirt road. This was a day that featured brief light rain in the afternoon and mixed low clouds into the evening. 81% humidity. 63┬░F 9 inch little black tip for a tail rattlesnake baby in my headlamp, freshly born neonate;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4925928570; Occurrence Remarks: Very small rattlesnake on the trail this evening. Barely 9 inches long. Tiny little nub at the end of its tail. We assume this is a newborn (neonate). The markings on these baby rattlesnakes are always so beautiful!;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4937082755; Occurrence Remarks: Distinct green-ish color, more apparent in person than in photo. Guessing a little less than a meter long. Crossing a popular walking trail on a hot sunny afternoon. Did not pause to threaten my party of two adults and one dog lunging toward it (though securely on leash) within 4 meters of snake.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4936214711; Occurrence Remarks: It was a chilly night so this buddy was all coiled up and resting.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936061310; Occurrence Remarks: Cool and breezy conditions. 25ΓÇ¥ by eye.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4936141839; Occurrence Remarks: Looks like a pair of rattlesnakes.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4935751851; Occurrence Remarks: One of two Northern Pacific Rattlesnakes we saw on our hike in Briones this afternoon. The two snakes were not together, but they both appeared on the same section of trail from the grassy area beside it. We saw them pretty much one after the other. The first rattlesnake (this one) was smaller;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4937258509; Occurrence Remarks: Rattlesnake #1 Approx 2 long;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936955535; Occurrence Remarks: Rattlesnake #2 Approx 3 long;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936625706; Occurrence Remarks: The second of two Northern Pacific Rattlesnakes we saw this afternoon in Briones. We saw both snakes pretty much in the same place, one after the other. Definitely two different snakes - this one was quite a bit bigger;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 4945914682; Occurrence Remarks: 10th rattlesnake sighting, 2024. this one was on the trail and then exited the trail and coiled up in a defensive posture. Temperature 70┬░F.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4945845700; Occurrence Remarks: +- 10;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4949998933; Occurrence Remarks: Temp. 58┬░ F Sheltered bay laurel/oak woodland with gradual slope. Dark woods with animal paths. Grasslands ┬▒ 200 ft nearby. I frequently see rattlesnakes and king snakes in this general area but this was the first time I encountered one under the tree canopy here. It was quite cool in the open grasslands with fog pouring in. I backed away after almost crossing paths. It coiled and rattled after it saw me. I saw it before it saw me. I had walked into the woods to get away from the chili of foggy breeze and I was keeping an eye open on the trail in front of me because theres rust old downed barbed wire here. One dog was on leash ahead of me. I saw the stripped pattern of the snake and we all retreated backward. I got the dogs buckled down good and then took some photos ISO 12500 because it was pretty dim. Twelfth NPR observation for me this year. This individual was approx 28 in length. It was in the drainage hollow area.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4949959406; Occurrence Remarks: Saw this very small, baby rattlesnake just off trail this evening around 8 pm. It was maybe 7 inches long and just had the little nub or button at the end of its tail.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4950439442; Occurrence Remarks: We are seeing a lot of rattlesnakes lately! We sometimes see them during the day, but mostly we see them right after it gets dark. This evening on our hike we saw 2, including this little baby. This was at around 8 pm. Such beautiful markings on the young ones!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4950111907; Occurrence Remarks: This is the second of two Northern Pacific Rattlesnakes we saw on our hike this evening. Spotted this guy (not the greatest photos!) in the grass beside the trail at around 8.15 pm or so.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4950610806; Occurrence Remarks: 3 snake. Grasslands near coyote brush;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4952602977; Occurrence Remarks: Saw this guy wedged into a crevice tonight in an area of old road cut beside the trail with exposed roots. We have seen rattlesnakes here before, and we often see mice scurrying along the tree roots. No doubt thats why the rattlesnakes hang out there too!;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 4952411056; Occurrence Remarks: Ambush position in the rocky roadcut where we watch several species of mice live and feed. It took a position right along their path.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4953190985; Occurrence Remarks: Newborn. Bay leaf for size reference.;; Coordinate Uncertainty in Meters: 1002.00000.

GBIFID: 4952526350; Occurrence Remarks: The snake moved off the trail. It was actively moving. It went beneath the layer of dried grass. I photographed it looking thru the grass. Its eye and white underbelly beneath chin is visible in photo. Flash photo.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4952318581; Occurrence Remarks: Didnt have time to get a headshot as the snake moved quickly away as I approached with my cell phone. Got some rattle shots at least! Seen tonight at about 7.45 pm.;; Coordinate Uncertainty in Meters: 34.00000.

GBIFID: 4952827337; Occurrence Remarks: It was a good evening for herping in our local Regional Preserve tonight! We saw 3 very young rattlesnakes, as well as a Coast Garter Snake eating a lizard and an almost intact skin from a California King Snake. This was the first of our 3 young rattlesnake sightings;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4952420026; Occurrence Remarks: Saw this little guy this evening near the trail. Not sure if he had just crawled out of the nearby hole or not. Another very young snake, the second of 3 young rattlesnakes we saw tonight.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4952919177; Occurrence Remarks: The 3rd of 3 very young rattlesnakes we saw on our hike earlier this evening;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4952324634; Occurrence Remarks: Juvenile in grasslands.;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 4952924012; Occurrence Remarks: Juvenile in grasslands.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4953083324; Occurrence Remarks: Juvenile in grasslands. It was making strike-like motions towards us.;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 4954315632; Occurrence Remarks: A snake that was larger than the very juvenile snakes we have been seeing in the preserve lately. Three rattles so approx 9-12 mo. old.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2242893272; Occurrence Remarks: Heart hanging out at the end;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079783602; Occurrence Remarks: gravid or digesting?;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 2242940807; Occurrence Remarks: heard a snake moving in the shrub next to my feet, looked and just saw it (and just barely got these pics of the rattle).;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4978385455; Occurrence Remarks: a pair! First time seeing the darker mate;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4980505174; Occurrence Remarks: This juvenile rattlesnake was very sluggish and barely moved the whole time I was standing close by taking photos of it. Since Ive seen 2 dead snakes recently I was worried that it may be injured/dying. But I walked on and on the way back the snake was gone so Im taking that as a good sign!;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4994621435; Occurrence Remarks: Sleepy hollow open space. San Anselmo CA;; Coordinate Uncertainty in Meters: 93.00000.

GBIFID: 1640029062; Occurrence Remarks: With Desert Ecology Class.;; Coordinate Uncertainty in Meters: 9073.00000.

GBIFID: 5006769512; Occurrence Remarks: Sad dors;; Coordinate Uncertainty in Meters: 28300.00000.

GBIFID: 5076864202; Occurrence Remarks: consistently under the same cover board for some months during the summer;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5087309356; Occurrence Remarks: 65 degree basking same individual as last spring;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5087709468; Occurrence Remarks: 56 degree Felix;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5087888015; Occurrence Remarks: Young- see millipede in second photo for scale.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 5108121150; Occurrence Remarks: F├⌐lix and mate;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5134190000; Occurrence Remarks: Felix 67F;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5133785898; Occurrence Remarks: About 70cm, ~5 rattles. Seemed well fed and relaxed.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 5134074758; Occurrence Remarks: Found this in my boot;; Coordinate Uncertainty in Meters: 162.00000.

GBIFID: 5134329770; Occurrence Remarks: DidnΓÇÖt rattle until it slithered into the grass, but definitely rattlesnake;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5134812587; Occurrence Remarks: Probably it was not actually wise to be even so close as this to get this picture, but, well!!;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5140044591; Occurrence Remarks: I believe this is the mate of the individual I usually encounter here. shes under the rock peaking out;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5141097858; Occurrence Remarks: Snake was basking on the unpaved road near Junction Lake.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5154054575; Occurrence Remarks: i believe this is a different one than the one i saw nearby a few weeks ago yay;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 5153151072; Occurrence Remarks: he ha he ha another one;; Coordinate Uncertainty in Meters: 135.00000.

GBIFID: 5154473087; Occurrence Remarks: Fran 78F;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 3343811309; Occurrence Remarks: Young one lounging on the path. About 9 long.;; Coordinate Uncertainty in Meters: 78.00000.

GBIFID: 1262383114; Occurrence Remarks: Sunning by an oak tree;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168463820; Occurrence Remarks: Fran 70F;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1265540340; Occurrence Remarks: Rattlesnake resting in a mouse nest.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5167145573; Occurrence Remarks: Rattlesnake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168423856; Occurrence Remarks: Terrible photos! I only had my cell phone with me and this guy was hidden in the shade beside the trail. He was coiled and making a lot of warning noise with his tail, so I just snapped a couple of pics and went on my way! Should have taken a video! That sound!!;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2283213961; Occurrence Remarks: Baby rattlesnake this morning on the waterfall trail. So young that its rattles were not yet developed. Had to chase it off the trail, at which point it went into a striking pose before complying.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 5168127998; Occurrence Remarks: ~4ft long;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 5176903709; Occurrence Remarks: Fran High 60s newly shed;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 5176910706; Occurrence Remarks: the babiest baby ever bruh this thing was tiny and didnt move so i picked it up with a (big) stick and it skedaddled eventually;; Coordinate Uncertainty in Meters: 76.00000.

GBIFID: 5206205559; Occurrence Remarks: About 3 feet of fat snake.;; Coordinate Uncertainty in Meters: 216.00000.

GBIFID: 2294645601; Occurrence Remarks: Young. Small.;; Coordinate Uncertainty in Meters: 1000.00000.

GBIFID: 2294673495; Occurrence Remarks: Found on the neighborhood street lifeless. Perhaps struck by a car?;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5215921597; Occurrence Remarks: Was coiled into approximately 5 inch circle;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 5215868724; Occurrence Remarks: Unfortunately I wasnt able to get a picture of the entire snake. He was crossing the trail right in front of us and I needed to wrangle one of our dogs safely out of the way. By the time I was able to reach for my cell phone the snake was already mostly under cover of the grass beside the trail. But I got the important bit! :-);; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5216202307; Occurrence Remarks: Coiled on trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5230463543; Occurrence Remarks: Temperature was 84 degrees F when I saw this guy on the trail in front of me at 4.41 pm today;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 5237977587; Occurrence Remarks: Huuuuuge snake! About 4 feet long. Safely removed by the Jackson fire department. It was a beautiful specimen, but I sure wasnΓÇÖt about to get close enough to take better pictures!;; Coordinate Uncertainty in Meters: 28270.00000.

GBIFID: 5237948610; Occurrence Remarks: I understand this taxon has been split into Northern and Southern Pacific Rattlesnakes.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2422980024; Occurrence Remarks: Saw us and went into its burrow.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2423072597; Occurrence Remarks: Cal State East Bay Concord campus field office path;; Coordinate Uncertainty in Meters: 349.00000.

GBIFID: 2423203054; Occurrence Remarks: First one of these seen here in multiple trips, strangely. In dappled shade among rocks under a juniper. South facing slope - probably en route to den somewhere. Air temp 73, shady cavity temp 79, snake temp 79, sunny rock 86. This morning it was 34 degrees in camp.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2429580813; Occurrence Remarks: Found near the marsh;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2465296055; Occurrence Remarks: My late date for this species in the East Bay ( excluding ones that were hibernating ) . This one is very young , maybe from this year ?;; Coordinate Uncertainty in Meters: 104.00000.

GBIFID: 1305130658; Occurrence Remarks: Crossing the road.;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 2576285712; Occurrence Remarks: Young snake. On the firebreak trail where we occasionally see rattlesnakes;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2579318623; Occurrence Remarks: Warm enough for rattlesnakes to be out . A hiker reported two others . This seems early , but it has been warm lately .;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 1323006446; Occurrence Remarks: Rattlesnake along the trail near Tiltill Valley;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2609317421; Occurrence Remarks: PRACTICED SOCIAL DISTANCING. :-);; Coordinate Uncertainty in Meters: 3994.00000.

GBIFID: 2626643951; Occurrence Remarks: Heard a rattling noise saw a gorgeous adult rattler. Only had enough time to get this shot of the tail end of the snake sliding into the shed. You can see the rattle on the end, though the photo is quite blurry. My first rattlesnake find of the year! Hopefully the first of many to come!;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2626186718; Occurrence Remarks: Crossing road;; Coordinate Uncertainty in Meters: 284.00000.

GBIFID: 2626529806; Occurrence Remarks: Found at the lower gate.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2634562181; Occurrence Remarks: Spotted this injured rattlesnake as it crossed a walkway next to the classrooms at IVC organic farm. No idea how it got injured, but it was coming from the area of the classrooms so maybe human involvement.;; Coordinate Uncertainty in Meters: 74.00000.

GBIFID: 2823230873; Occurrence Remarks: Saw this rattlesnake on the RoyΓÇÖs Redwood Loop trail during the redwood shaded portion (not the meadow half) 0.5 mile from starting point between the 1st and 2nd junction for the Meadow Trail. It stood its ground and was not skittish at all. We waited it out for 5-10 min and eventually it went off trail, but even as we passed with it a few meters off trail it rattled defensively as we rushed by. Beautiful and remarkable sighting and probably a good reminder for dogs to stay on leash on the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826517524; Occurrence Remarks: Looks like this baby rattler was run over by a car then eaten.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2850603992; Occurrence Remarks: Rattlesnake on Lower Berry Trail;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 2851088468; Occurrence Remarks: Found a few yards from Copeland Creek.;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 2850871061; Occurrence Remarks: 40 inches;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2850730233; Occurrence Remarks: These rattlesnakes were ΓÇ£dancingΓÇ¥. Large sized. I wish i naturalist took video. Mating or fighting?;; Coordinate Uncertainty in Meters: 380.00000.

GBIFID: 2856694645; Occurrence Remarks: Found on the Moving Mountain Trail.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2864633936; Occurrence Remarks: This was a small snake. I didnt see it until I passed it on the trail--it was sunning in the opening of a burrow only about a foot off the trail. I kept walking, and then took the first shot from several steps away. When I moved, the snake decided to go back inside the burrow.;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 2873743544; Occurrence Remarks: Baby. Only 8in The leaf is reference. No rattles yet? Looked like one rattle maybe. Why does tail look black?;; Coordinate Uncertainty in Meters: 386.00000.

GBIFID: 2901532634; Occurrence Remarks: The size is hard to gauge from the gif, but it was pretty young I think. About 3-4ft long.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3059081851; Occurrence Remarks: I think that is what it is. Sadly it was run over by a vehicle.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1584420855; Occurrence Remarks: Rattlesnake?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3090660325; Occurrence Remarks: Very young rattlesnake, judging by size of rattle, eating a lizard;; Coordinate Uncertainty in Meters: 45.00000.

GBIFID: 3343751330; Occurrence Remarks: About 1ft. long.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3090919695; Occurrence Remarks: What kind of snake? Rattlesnake?;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 3097150596; Occurrence Remarks: Jumped down from a ledge and it was 1 foot from my leg, eek! Never flinched!;; Coordinate Uncertainty in Meters: 562.00000.

GBIFID: 3097056933; Occurrence Remarks: Found along Pine Mountain Fire Rd. Possibly ran over by a biker.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3097423476; Occurrence Remarks: 1st of the season. Maybe 18. It disappeared into the vegetation. No rattling, just went its way before I had a chance to zoom out and get a full length photo. Added a single frame from a video as it disappeared into the buttercups.;; Coordinate Uncertainty in Meters: 1000.00000.

GBIFID: 923920772; Occurrence Remarks: It was a juvenile. Did not strike at me even though I was about to step on it. Only had 1 rattle.;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 3109290829; Occurrence Remarks: (The photos are from stacks of 50-100 photos merged into one to show greater depth of field.) Seen right to the side of the trail. Just stayed on a coiled posture. This particular area is very well known for the rattlesnakes. It is common to see rattlesnakes here during the day if the weather conditions favor. We have learned to expect encounters and stay on the dirt road and look ahead and to the side for rattlesnakes. This snake did not rattle. I observed it quietly sitting just to the side of the trail.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3109163928; Occurrence Remarks: Tiny danger noodle!;; Coordinate Uncertainty in Meters: 523.00000.

GBIFID: 3109420313; Occurrence Remarks: small rattle;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3109412439; Occurrence Remarks: Just 1 seen.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3112806162; Occurrence Remarks: ! A little rattle! ≡ƒÿ»;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3112396223; Occurrence Remarks: Was not happy to be shood off the road. Prevented a road kill for now.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3113305803; Occurrence Remarks: A small one, in a hurry to leave;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891080957; Occurrence Remarks: Time: 14:50 Temp around 74 deg. F. warming himself in the shade of a tree on gravel right next to road. Lethargic - uninterested in moving to safer location when prodded with stick. No rattling or hissing.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 891081055; Occurrence Remarks: I found this individual near cover but in the open on damp sandy ground near the main footpath. Temp. was in the mid to high 60s F. and it was intermittently heavily misting at the time. Time was 14:55. Id estimate he was around 8 to 10 inches in length - no rattle segments yet. He was very calm and reluctant to move in order to show me his tail.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3117802161; Occurrence Remarks: Photo by Dave Marquart near Mono Lake.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 891081342; Occurrence Remarks: Found curled up in sunlight next to a comfortable looking pair of rocks for a human to rest on.... Around 80 deg. F @ 14:33. Sat calmly for one photo, then got nervous, rattled and adopted defensive posture, but immediately decided to dart quite energetically into his little den between the rocks. Appeared to have around 3 or 4 rattle segments (but they were moving at the time...) - Id guess around 12 inches long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3124924438; Occurrence Remarks: Stumbled on a rattlesnake at Serpas Ranch Open Space.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3302158657; Occurrence Remarks: Puncture wound near the tail .;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 1668890269; Occurrence Remarks: Juvenile rattlesnake poking out from under a rock on Madrone Trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1671727896; Occurrence Remarks: Observed near Chimney Rock campsite in the Maze District of Canyonlands Natl Park, Utah.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1671736357; Occurrence Remarks: Species? Crossing Masonic Road near Success Mine, between areas of sagebrush scrub, northern Bodie Hills.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 891082973; Occurrence Remarks: Juveniles in Rose Hill Cemetery;; Coordinate Uncertainty in Meters: 5494.00000.

GBIFID: 3333292026; Occurrence Remarks: 8:45 pm observation using a high sensitivity camera. I made a video. These are screenshots of the video. Seen alongside the trail. Not especially warm and the cool marine air was flowing in. Many holes from rodents in the dirt. 10 Tail segment rattles.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3333458387; Occurrence Remarks: Poor cell phone pic.;; Coordinate Uncertainty in Meters: 1002.00000.

GBIFID: 1703205290; Occurrence Remarks: Is this a rattle or gopher snake?;; Coordinate Uncertainty in Meters: 560.00000.

GBIFID: 3337437037; Occurrence Remarks: Snake relocated from front planter to across street.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3337571386; Occurrence Remarks: Found curled near a pond in Sonoma County. It was hard to get a clear photo of it in the grass without disturbing it, but its head shape was definitely large and triangular like a rattlesnake.;; Coordinate Uncertainty in Meters: 28270.00000.

GBIFID: 3338050768; Occurrence Remarks: Pretty small, hard to judge size. No way to get a better pic either.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3337531738; Occurrence Remarks: Freeze-frame of the video gave me a reference to the length. I measured 3 feet. At the Heavenly Ridge Lane entrance to Sobrante Preserve near where I live. It was moving quite fast. I filmed its journey. Counted 12 segments on the tail.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3355727319; Occurrence Remarks: Baby Northern Pacific Rattlesnake, approx 11 inches in length. No defined rattles, but the button is there. Small, but triangular head.;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 3384184204; Occurrence Remarks: Neonate rattlesnake found along the trail, very active, at 8:30 pm. We leashed all the dogs. My wife held the dogs. I took a photo with the iPhone. Judging from the scale reference of the leaves Id say 25 cm.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3391289966; Occurrence Remarks: Finding cover in the old roots of the road cut. It moved into a position with its head facing out.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3399435375; Occurrence Remarks: Neonate. Seen at the highest elevation in the preserve.;; Coordinate Uncertainty in Meters: 25.00000.

Occurrence Remarks: It was 55 degrees Fahrenheit and felt colder than that, so it was a bit of a surprise to see this guy tonight. We were looking for salamanders but saw two snakes instead; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: 35 cm. 55┬░F. Active on the trail; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Found this under some leaf litter in our front yard and Mike safely relocated him/her to the Park; Coordinate Uncertainty in Meters: 61.00000.

Sonoma, California: 38.357503, -122.52382: : 7/2/2026: Joshua Zupan: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.345567, -122.5372: : 7/4/2026: morrow1028: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Contra Costa, California: 37.967633, -122.267913: : 9/24/2025: wildcatdogs: 24 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Curled up under a tree right beside the trail, and making sure everyone who passes by knows he is there!; Coordinate Uncertainty in Meters: 46.00000.

Contra Costa, California: 37.946172, -122.127729: : 8/24/2025: gabrielernie: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 25.00000.

Occurrence Remarks: Very humid day. This snake was hanging out here for an hour or more. Perhaps a male?; Coordinate Uncertainty in Meters: 2.00000.

Sonoma, California: 38.360141, -122.50599: : 8/27/2025: Sarah Estrella: 27 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.343772, -122.594513: : 7/8/2026: Patrick Stoltz: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: About 8ΓÇ¥; Coordinate Uncertainty in Meters: 414.00000.

Sonoma, California: 38.29846, -122.448: : 8/31/2025: reptile_galen: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Sonoma, California: 38.222818, -122.507327: : 8/31/2025: reptile_galen: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Contra Costa, California: 37.946241, -122.135201: : 8/27/2025: alicecaste: 27 Aug 2025 ; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: DOR - very sad

Occurrence Remarks: Very docile. Did not attack when almost stepped upon. Enlarged abdomen. Remained in an exposed area for 12 hours despite being near our campsite (30 feet away); Coordinate Uncertainty in Meters: 3.00000.

Marin, California: 38.045243, -122.59729: : 7/13/2026: Cori Kreinberg: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 53547.00000.

Contra Costa, California: 37.94504, -122.203292: : 9/11/2025: Kevin Dixon: 11 Sep 2025 ; Coordinate Uncertainty in Meters: 21.00000.

Solano, California: 38.080456, -122.254875: : 7/13/2026: strawgast: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.23991, -122.465296: : 10/16/2025: reptile_galen: 16 Oct 2025 ; Coordinate Uncertainty in Meters: 28270.00000.

Tuolumne, California: 37.985612, -120.395242: : 9/14/2025: lukedonahue_: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Marin, California: 38.020925, -122.59333: : 7/21/2026: shannoncmorrow: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Mono, California: 38.086992, -119.158525: : 9/15/2025: Chloe and Trevor Van Loon: 15 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: I know it was a diamond back rattle snakes because I see them all the time in my home town. And I kept itΓÇÖs rattle; Coordinate Uncertainty in Meters: 2055.00000.

Sonoma, California: 38.451347, -122.649902: : 3/23/2026: pord: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847491111; Occurrence Remarks: Removed to nature area nearby.;; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Occurrence Remarks: Found while moving tin; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.637695, -121.237755: : 10/27/2025: aestif: 27 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Sacramento, California: 38.617466, -121.311572: : 10/17/2025: KimberlySteinmann: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 145.00000.

Sacramento, California: 38.617466, -121.311572: : 10/17/2025: mgrien: 17 Oct 2025 ; Coordinate Uncertainty in Meters: 145.00000.

Sacramento, California: 38.576983, -121.352845: : 10/20/2025: Elin Pierce: 20 Oct 2025 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: I think? Wasnt sure if it was a gopher snake; Coordinate Uncertainty in Meters: 200.00000.

Sonoma, California: 38.463638, -122.866063: : 8/6/2025: Joanne Lin: 6 Aug 2025 ; Coordinate Uncertainty in Meters: 28240.00000.

Napa, California: 38.550462, -122.585283: : 11/2/2025: Laine McTague: 2 Nov 2025 ; Coordinate Uncertainty in Meters: 28240.00000.

Napa, California: 38.577429, -122.426938: : 11/2/2025: Laine McTague: 2 Nov 2025 ; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.599945, -122.652155: : 11/5/2025: Laine McTague: 5 Nov 2025 ; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: So after going 3 weeks without seeing a Rattlesnake, my brother spotted this recently hatched little Rattlesnake right in our camp ! ! ! ! We took photos and then gently directed it into a bucket, and then released it down the slope into the creek area where it could hunt bugs and juvenile Fence Lizards in northern Napa County. Private Property - No Public Access.; Coordinate Uncertainty in Meters: 62500.00000.

Sonoma, California: 38.56683, -122.685134: : 7/24/2026: curiousgeorge61: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Looks like rattlesnake tail; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4172041940; Occurrence Remarks: 4 beads, very cute!;; Coordinate Uncertainty in Meters: 4.00000.

Millard, Utah: 38.606707, -112.51913: : 6/7/2025: Joey Mugleston: 7 Jun 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4138243107; Occurrence Remarks: Just hanging out in the backyard;; Coordinate Uncertainty in Meters: 0.11000.

Yolo, California: 38.694386, -122.014007: : 5/31/2026: deanfallsalot: 31 May 2026 ; Coordinate Uncertainty in Meters: 1835.00000.

Occurrence Remarks: Pictures taken by Jock Hamilton (https://www.instagram.com/hamiltonjock/) for the monthly Quail Ridge Orange Herpetology Survey; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: Flattened under the road trap; Coordinate Uncertainty in Meters: 3.00000.

Solano, California: 38.514137, -122.05583: : 5/23/2026: Amy Zhang: 23 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.543472, -122.669363: : 4/18/2026: Ethan Hobbs: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Solano, California: 38.509797, -122.09693: : 5/25/2026: hballarducd: 25 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Napa, California: 38.571912, -122.622642: : 4/14/2026: Alex Larson: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Yolo, California: 38.69371, -122.021047: : 4/17/2026: deanfallsalot: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 3724.00000.

Occurrence Remarks: With food bolus. As found in last slide; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.465367, -122.869514: : 4/18/2026: Archer Barrett: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.569037, -122.813401: : 4/18/2026: Archer Barrett: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Napa, California: 38.607188, -122.281747: : 4/19/2026: athall: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Safely removed from road; Coordinate Uncertainty in Meters: 4.00000.

Napa, California: 38.570122, -122.241705: : 4/19/2026: athall: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Safely moved off the road; Coordinate Uncertainty in Meters: 223.00000.

Sacramento, California: 38.651592, -121.196412: : 4/19/2026: elim8: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.416541, -122.602033: : 3/29/2026: sixoften61: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.369591, -122.506614: : 4/21/2026: Nancy Kelley: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Baby; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Got a little close to this one but look at those gorgeous eyes; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.448085, -122.804599: : 4/26/2026: Archer Barrett: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.692077, -121.120471: : 4/26/2026: livkaya: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Sonoma, California: 38.48745, -122.56827: : 3/13/2026: reptile_galen: 13 Mar 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.685347, -121.116299: : 11/2/2025: stray_plant_lady: 2 Nov 2025 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: Unfortunately, it was dead. It looked like someone had stomped its head.; Coordinate Uncertainty in Meters: 175.00000.

Sonoma, California: 38.411992, -122.575547: : 10/11/2025: diogenesthefog: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 17.00000.

Sacramento, California: 38.617466, -121.311572: : 9/14/2025: Makayla Simmons: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 146.00000.

Sonoma, California: 38.449587, -122.642212: : 5/10/2026: Mari Ferlin: 10 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Napa, California: 38.538972, -122.123114: : 5/19/2026: Yinpeng Zhang: 19 May 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.65317, -121.20903: : 5/20/2026: monty anderson: 20 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Sacramento, California: 38.638858, -121.236228: : 5/20/2026: ocarps: 20 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: 8 or 9 inch baby; Coordinate Uncertainty in Meters: 7.00000.

Sacramento, California: 38.671324, -121.190937: : 3/30/2026: dahfool: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Baby Rattle under a Herps board; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Baby on top!; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.566701, -122.684732: : 4/21/2026: curiousgeorge61: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Sacramento, California: 38.597303, -121.327308: : 5/23/2026: Asia: 23 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Solano, California: 38.492428, -122.006194: : 5/23/2026: jeannelb: 23 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Solano, California: 38.514132, -122.055842: : 5/23/2026: Reilly Dunn: 23 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Yolo, California: 38.494662, -122.03235: : 5/25/2026: Shannon Buttimer: 25 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Solano, California: 38.514149, -122.055845: : 5/23/2026: aandygc: 23 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sacramento, California: 38.603736, -121.31365: : 5/27/2026: pyang211-2_aka_fishouttahwatah: 27 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Millard, Utah: 38.593138, -113.459267: : 5/29/2026: Parker James Lloyd: 29 May 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.593292, -123.067055: : 5/31/2026: brock: 31 May 2026 ; Coordinate Uncertainty in Meters: 90.00000.

GBIFID: 1883525199; Occurrence Remarks: Located on the American River Bike trail;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4597227818; Occurrence Remarks: Slowly dragging lunch off the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121483712; Occurrence Remarks: Just a lil baby. Escorted them off the road before they got squished.;; Coordinate Uncertainty in Meters: 293.00000.

GBIFID: 4116213578; Occurrence Remarks: It slithered off the fire road trail into the vegetation, vibrating its tail. Total length was about 2.5 feet long.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3961072343; Occurrence Remarks: Retreated back into the rubble pile before I could get any better shots, where it proceeded to rattle for like another 5 minutes.;; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: 48 degrees, overcast, and with a storm brewing. But snakes were under rocks I guess.; Coordinate Uncertainty in Meters: 28210.00000.

Sacramento, California: 38.635822, -121.238495: : 2/28/2026: h_rand: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Sonoma, California: 38.6395, -122.837423: : 2/28/2026: Stop4Snakes!: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Last photo in-situ. Beautiful little viper.; Coordinate Uncertainty in Meters: 28210.00000.

Sacramento, California: 38.6339, -121.239433: : 3/2/2026: sam_paul: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 1256.00000.

Sacramento, California: 38.576875, -121.352249: : 3/7/2026: Erik Johnson: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Sonoma, California: 38.379748, -122.516728: : 3/7/2026: vicsch: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Napa, California: 38.414213, -122.18827: : 3/8/2026: brett_francis: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Sonoma, California: 38.556908, -122.638895: : 3/8/2026: lillycastillo: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.369533, -122.50657: : 3/12/2026: Shirley Austin-Peeke: 12 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Peacock for size comparison; Coordinate Uncertainty in Meters: 6.00000.

Sevier, Utah: 38.578817, -112.334817: : 7/3/2025: Shannon Wilkinson: 3 Jul 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Napa, California: 38.647826, -122.530013: : 3/14/2026: Isaac Vargas: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 59.00000.

Sonoma, California: 38.556897, -122.638863: : 3/16/2026: breadnbutterfly: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.668386, -123.088465: : 5/17/2026: Archer Barrett: 17 May 2026 ; Coordinate Uncertainty in Meters: 28210.00000.

Sonoma, California: 38.660758, -123.131037: : 11/9/2025: Stop4Snakes!: 9 Nov 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

Sonoma, California: 38.368436, -122.513825: : 4/28/2026: Brianne JN Carlson: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.368731, -122.498886: : 4/28/2026: John Lynch: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Saw a rattle at the end when it crossed our path.; Coordinate Uncertainty in Meters: 109.00000.

Napa, California: 38.572217, -122.219356: : 5/1/2026: jmeyer88: 1 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.445787, -122.505508: : 5/1/2026: EH Outings: 1 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.521894, -122.757928: : 5/3/2026: Carl Dobson: 3 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Two individuals, one moving out of frame and another coiled in the bottom right; Coordinate Uncertainty in Meters: 28210.00000.

Sonoma, California: 38.567925, -122.700195: : 5/9/2026: Hale Garcia-Dean: 9 May 2026 ; Coordinate Uncertainty in Meters: 432.00000.

Sacramento, California: 38.635508, -121.272253: : 5/11/2026: spolisky: 11 May 2026 ; Coordinate Uncertainty in Meters: 52.00000.

Sonoma, California: 38.525922, -122.741675: : 5/6/2026: cloverchloe: 6 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: This unfortunate rattlesnake appears to have been hurt on the road. I gently helped it off the road and into the brush; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Baby rattlesnake in a crack of large blue schist bolder; Coordinate Uncertainty in Meters: 190.00000.

Occurrence Remarks: Flipped under a rock along with another rattlesnake, likely from the same clutch of eggs. One or two years old.; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: Sharing a rock with another rattlesnake of same age. FOY; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: Top; Coordinate Uncertainty in Meters: 3.00000.

Sacramento, California: 38.634075, -121.2172: : 4/27/2026: J. Roe: 27 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sacramento, California: 38.576175, -121.354492: : 3/20/2026: Elin Pierce: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Napa, California: 38.57245, -122.414883: : 5/21/2025: Nick Cecchi: 21 May 2025 ; Coordinate Uncertainty in Meters: 1.11000.

Sonoma, California: 38.408858, -122.596717: : 4/10/2025: jtreesam: 10 Apr 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Slowly crossing a trail.; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Crossing the trail at Shiloh Ranch Regional Park.; Coordinate Uncertainty in Meters: 0.11000.

Solano, California: 38.407967, -122.081069: : 5/11/2026: Spillane: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Second juvenile in two days; Coordinate Uncertainty in Meters: 196.00000.

Occurrence Remarks: Not 100% sure on the identity of the snake; Coordinate Uncertainty in Meters: 12810.00000.

Lincoln, Nevada: 38.66972, -114.430815: : 5/12/2026: micahrae: 12 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Sacramento, California: 38.562947, -121.401102: : 5/15/2026: Mark Sawyer: 15 May 2026 ; Coordinate Uncertainty in Meters: 81.00000.

Napa, California: 38.639017, -122.363833: : 5/15/2026: bonharpea: 15 May 2026 ; Coordinate Uncertainty in Meters: 269.00000.

Sacramento, California: 38.632595, -121.281242: : 5/16/2026: veichhorn: 16 May 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Sonoma, California: 38.405394, -122.942239: : 5/16/2026: Archer Barrett: 16 May 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: For the darker snake; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: Sunny den site in otherwise cold and dense conifer forest. 4 rattlesnakes seen basking when I walked up.; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: For the light golden snake; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.509284, -122.546618: : 3/25/2026: reptile_galen: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.627717, -121.274078: : 3/18/2026: natureguy_: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Juvenile, relocated closer to river; Coordinate Uncertainty in Meters: 62.00000.

Napa, California: 38.652313, -122.589058: : 3/18/2026: jaccicaviness: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.606806, -122.89047: : 3/22/2026: Gardengirl: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Sacramento, California: 38.587589, -121.464105: : 3/22/2026: Alex Binck: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.561588, -122.700188: : 3/7/2026: Hale Garcia-Dean: 7 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: On our driveway near a hillside with rocks averaging in size at about 8 - 18 in diameter. 6 rattles approx. age 2 yrs.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Note the rattle; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.454308, -122.648287: : 3/25/2026: Steve: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: First of year.; Coordinate Uncertainty in Meters: 2.00000.

Sonoma, California: 38.370465, -122.512456: : 3/28/2026: Brianne JN Carlson: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.370177, -122.513785: : 3/28/2026: Brianne JN Carlson: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Sonoma, California: 38.570275, -122.689117: : 3/23/2026: vivinat: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Napa, California: 38.644676, -122.579597: : 3/28/2026: Peter McCluskey: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: About one step away from stepping on this rattler this morning (2/26/26), while walking near San Juan rapids, on American River. It was coiling to strike when I spotted it, but wasted no time moving into grass when I stopped and stepped back... The stopping and stepping back was all one very quick motion.; Coordinate Uncertainty in Meters: 15.00000.

Napa, California: 38.655522, -122.587945: : 3/28/2026: mpainter: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: It looked like its tail end had been run over. You can see in last photo. It didnΓÇÖt/couldnΓÇÖt rattle. +-8 rattle sections. Edit: Heard it rattle at a pheasant the next day.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Baby rattlesnake got a little too ambitious for this world. Rattlesnake and fence lizard combo.; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.444763, -122.575378: : 3/26/2026: Derek Lindsey: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: rattleless rattler; Coordinate Uncertainty in Meters: 1644.00000.

Yolo, California: 38.498576, -122.000262: : 4/4/2026: Yaohui Wu: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: It was in the middle of the road, likely ran over by a vehicle. Another person moved the corpse to the side of the road where this photo was taken; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Little juvenile; Coordinate Uncertainty in Meters: 30.00000.

Yolo, California: 38.514428, -122.074036: : 4/7/2026: Yaohui Wu: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Yolo, California: 38.55866, -122.023601: : 4/7/2026: Seth Marshall: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.453661, -122.649011: : 4/9/2026: lilredhen: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Sacramento, California: 38.696572, -121.128778: : 4/9/2026: fexcad: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Flipped. A suitor; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: Flipped. The queen; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: First snake IΓÇÖve seen since sept 17; Coordinate Uncertainty in Meters: 28210.00000.

Sacramento, California: 38.638868, -121.244575: : 7/17/2025: Nick Cecchi: 17 Jul 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Sacramento, California: 38.411743, -121.439554: : 11/30/2025: chantel05: 30 Nov 2025 ; Coordinate Uncertainty in Meters: 322.00000.

Solano, California: 38.477622, -121.988792: : 6/2/2025: paigedavis03: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found dead; Coordinate Uncertainty in Meters: 145.00000.

Sacramento, California: 38.617466, -121.311572: : 12/25/2025: KimberlySteinmann: 25 Dec 2025 ; Coordinate Uncertainty in Meters: 145.00000.

Sacramento, California: 38.617466, -121.311572: : 12/26/2025: KimberlySteinmann: 26 Dec 2025 ; Coordinate Uncertainty in Meters: 145.00000.

Sonoma, California: 38.380187, -122.45939: : 6/14/2025: Allegra Aiuto: 14 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Sevier, Utah: 38.521228, -112.263242: : 6/3/2025: Caleb Ellsworth: 3 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Solano, California: 38.409428, -122.075173: : 6/2/2026: gilmore1777: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: LIFER!! I wouldnt have even noticed this beauty if someone else hadnt pointed it out. Glad they did! I estimate around 2ft, but I am probably way off. Amongst rocks in a culvert on the side of the trail. Grassland, and shrubland nearby.; Coordinate Uncertainty in Meters: 28240.00000.

Solano, California: 38.504105, -122.099004: : 6/5/2026: Brittany: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 137.00000.

Napa, California: 38.571297, -122.234253: : 6/7/2026: austintmorin: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Sonoma, California: 38.385316, -122.462578: : 6/8/2026: Daveozric: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 28270.00000.

Sevier, Utah: 38.567568, -112.283083: : 6/4/2026: Danner Chartier: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Piute, Utah: 38.453588, -112.349251: : 6/4/2026: Danner Chartier: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.568687, -121.424133: : 6/9/2026: elicizew: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Sevier, Utah: 38.580678, -112.31665: : 6/4/2026: Danner Chartier: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 3535.00000.

Napa, California: 38.553231, -122.524096: : 6/5/2026: scrubjay1: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 85.00000.

Occurrence Remarks: Pictures taken by Jock Hamilton (https://www.instagram.com/hamiltonjock/) and Arry Murphey (https://www.instagram.com/arrymurphey/) for the monthly Quail Ridge Orange Herpetology Survey; Coordinate Uncertainty in Meters: 28240.00000.

Sacramento, California: 38.593238, -121.327963: : 6/14/2026: Andrew Wickham: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Sonoma, California: 38.582398, -123.11814: : 6/12/2026: Nate Vorapharuek: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 186.00000.

Sonoma, California: 38.46258, -122.555795: : 6/20/2026: Archer Barrett: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Seen at the den that we released the house rattlesnake at; Coordinate Uncertainty in Meters: 28210.00000.

El Dorado, California: 38.66323, -120.862817: : 6/22/2026: dunksterd: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Somewhat in the center of each photo. Shied away from crossing the trail after we noticed each other.; Coordinate Uncertainty in Meters: 28240.00000.

Napa, California: 38.522445, -122.214645: : 7/12/2026: madymd: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sacramento, California: 38.681658, -121.182433: : 6/22/2026: august2323: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Sonoma, California: 38.415439, -122.736398: : 6/9/2026: Laine McTague: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Sonoma, California: 38.572992, -123.234: : 6/21/2026: gotcritters: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.437997, -122.508745: : 6/26/2026: Leslie Huerta Gonzalez: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Sacramento, California: 38.626864, -121.286623: : 6/28/2026: hukk: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Sacramento, California: 38.633704, -121.273788: : 6/25/2026: Karen Skelton: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 438.00000.

Sonoma, California: 38.538072, -122.991355: : 6/28/2026: Rachel Mills: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 1102.00000.

Sacramento, California: 38.629339, -121.285753: : 6/30/2026: hukk: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.366805, -122.51365: : 6/30/2026: Jennifer Chandler: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.439513, -122.519212: : 3/14/2026: Joshua Zupan: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.438192, -122.50698: : 4/9/2026: JC: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sonoma, California: 38.556928, -122.6389: : 3/8/2026: lillycastillo: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Napa, California: 38.520462, -122.363092: : 10/30/2025: hoppdwear: 30 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Sacramento, California: 38.589859, -121.452135: : 10/1/2025: Elena Reljic: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 8.00000.

Sonoma, California: 38.570046, -122.68937: : 3/28/2026: capriola_family: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 1831100246; Occurrence Remarks: Snake under pool pump cover;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 3416149381; Occurrence Remarks: ep;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1837752546; Occurrence Remarks: Almost stepped on him!;; Coordinate Uncertainty in Meters: 8256.00000.

GBIFID: 1838037960; Occurrence Remarks: this large rattler was as startled as i was when we met. it was stretched across a grassy portion of a trail when i, looking about for butterflies, stepped down within a couple inches of its middle, causing it to quickly rattle and rush to the side of the trail into taller grass where it coiled and set up its defensive position - a very handsome and considerate creature.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1052576156; Occurrence Remarks: Found small rattlesnake under rock just north of deer bones. Northern Pacific Rattlesnake Crotalus oreganus;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3747250568; Occurrence Remarks: See these almost everyday, at least two adults, same spot;; Coordinate Uncertainty in Meters: 4216.00000.

GBIFID: 3746992887; Occurrence Remarks: Three individuals within 5 feet of each other;; Coordinate Uncertainty in Meters: 82.00000.

GBIFID: 3747417340; Occurrence Remarks: Roadkill -- trailkill? -- along American River Bike Trail. Presumably killed by bicycle traffic.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3747266237; Occurrence Remarks: Two individuals;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3759723928; Occurrence Remarks: Last image is how I first saw it, with neither the head or tail visible. As it slithered away, it vibrated its tail before slinking under a fallen manzanita log, as if to warn us not to follow.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 891092393; Occurrence Remarks: A young visitor admiring the rose garden.;; Coordinate Uncertainty in Meters: 0.11000.

Sonoma, California: 38.57047, -122.69217: : 4/8/2022: Raphaela E. Floreani Buzbee: 8 Apr 2022 :

GBIFID: 3773508022; Occurrence Remarks: Scarily good camouflage!;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 3772860378; Occurrence Remarks: Relocated across the street. 15ΓÇ¥ or so.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1065588773; Occurrence Remarks: ANOTHER RATTLESNAKE;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 1065588810; Occurrence Remarks: Found on Rocky Road trail.;; Coordinate Uncertainty in Meters: 104.00000.

GBIFID: 3859550506; Occurrence Remarks: Fourth in four weeks.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3858832981; Occurrence Remarks: One foot long. Did not rattle.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1135523018; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus);; Coordinate Uncertainty in Meters: 737.00000.

GBIFID: 3860336582; Occurrence Remarks: >3 ft total length.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3860010489; Occurrence Remarks: Relocated to better habitat nearby.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847597461; Occurrence Remarks: Sunning itself in the late afternoon near entrance of park where grass was laying down;; Coordinate Uncertainty in Meters: 95.00000.

GBIFID: 1088913232; Occurrence Remarks: Large snake but only got a picture as it went into the rocks.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1847603216; Occurrence Remarks: found dead;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4022169304; Occurrence Remarks: Sorry about the picture, he came out of the rocks mad and we had to depart quickly.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 1088918763; Occurrence Remarks: Small snake in middle of the trail of Rock Road.;; Coordinate Uncertainty in Meters: 104.00000.

GBIFID: 1088918842; Occurrence Remarks: Richard stopped us right before we stepped on this juvenile. He was a beauty.;; Coordinate Uncertainty in Meters: 737.00000.

GBIFID: 1088923593; Occurrence Remarks: Rattlesnake outside Dwight center entrance;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1848801694; Occurrence Remarks: Prowling in the vegetable garden. (Sadly, had to be dispached);; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1880487772; Occurrence Remarks: Baby NorPac, but it was still able to make a rattle sound as it backed away into the bushes;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3915616517; Occurrence Remarks: I spotted the shed in this old pipe earlier in day and returned around dusk, and was lucky enough to find the maker. Location obscured since this is one of the largest rattlesnakes Ive seen at the Parkway and this is clearly its den, I dont want any poachers getting hints.;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1883470050; Occurrence Remarks: young Desert Massasauga, ~ 9 in length.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3994281188; Occurrence Remarks: Rattlesnake was observed in storm drain manhole catch basin. It appeared pretty healthy and seemed to be waiting for a rodent or other animal to fall through the openings in the manhole lid steel rods that allows storm water to enter. Photo taken by placing camera lens between the steel rods on the manhole lid.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4022297807; Occurrence Remarks: When I first started working at a new job in the El Dorado Hills Business Park in 1997, I would CAREFULLY wander around the undeveloped areas of the Business Park looking for wildlife to photograph. Almost immediately I realized that those areas were very heavily populated by Northern Pacific Rattlesnakes. Many were almost completely hidden in the tall dry grass, as shown in the first photo.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4028966074; Occurrence Remarks: Im not great with sheds, but these scales sure look coarse;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 4034691083; Occurrence Remarks: Along the Green River in Utah. 20-24 inches.;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 1890709570; Occurrence Remarks: This baby rattlesnake was found sleeping in the shade in a bundle of rocks. Although some pictures of it were taken from about 5 inches to a foot away it did not seem disturbed. It resembled a normal rattlesnake.;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 4091437671; Occurrence Remarks: Removed from trail, relocated within park;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3344004306; Occurrence Remarks: We surprised each other on Alder Glen Trail, about 20ft. up the path from creek picnic area. I took my photo & headed back down to take the long way round.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4102667900; Occurrence Remarks: Hides under rocks on handicap trail at Sugarloaf Ridge st pk;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4103182283; Occurrence Remarks: Baby!;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1898833803; Occurrence Remarks: It was enjoying the sun on a path. Im embarrassed to say that I ran over it before noticing it. Hissed continuously but did not rattle. The darkest coloration I have seen.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4102866673; Occurrence Remarks: This rattlesnake rattled clearly, loudly, a couple of times.;; Coordinate Uncertainty in Meters: 2900.00000.

GBIFID: 4126892120; Occurrence Remarks: Is this a rattlesnake?;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 4130030719; Occurrence Remarks: First of the season. Relocated nearby.;; Coordinate Uncertainty in Meters: 52.00000.

GBIFID: 4153375509; Occurrence Remarks: very docile Northern California Rattlesnake;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 4946590707; Occurrence Remarks: warning signs posted;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4165702310; Occurrence Remarks: Heartbreaker, DOR in a National Park. Had a few sprinter vans and fancy overlanders tailgating me. Pulled over to let them by and found this snake freshly run over a mile or so down the road..;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1122966790; Occurrence Remarks: My friend was walking around and found a rattle snake. it had a green and brown like color, with almost a dimond shapes made up of small dots on its back that near the tail that tern into strips. She/he was constantly flipping there tong out at us. It was about 2 feet long, when we got closer it coiled up and puffed up. There was only one in that area that we could tell.;; Coordinate Uncertainty in Meters: 223.00000.

GBIFID: 1134964653; Occurrence Remarks: The rattlesnake was found under dead branches and a dead log on a hot/sunny day. I did not observe other rattlesnakes in the area, but I did see numerous western fence lizards in the same 6 meter by 6 meter area. The rattlesnake has a diamond shaped head and a rattle on the end of its tail. The body of the rattlesnake is faint green with black markings. The black markings along its spine are oval shapes. There are small diamond shapes along the sides of the rattlesnake that are alternating. The black designs become darker as they near the tail of the rattlesnake. On the tail of the rattlesnake there are black stripes. It is 1.5 -2 feet in length. When first observed the rattlesnake was slithering through dry grass. It then proceeded to coil and puff up as I got closer. When the rattlesnake puffed it sounded like the snake was sucking in air. The snake did not shake its rattle when I was observing it (I was at a safe distance away), but it continually flicked its tongue up and down. The top of the tongue was black and the bottom of the tongue was pink.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1932342062; Occurrence Remarks: Pictures were taken by my mom but I was there too. Im pretty sure this was my first rattlesnake ever :);; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1132412169; Occurrence Remarks: This rattlesnake is a dark and light brown color, with square shaped ovals on the back. It was a baby and we could tell because it was only about 1 1/2 feet in length, and it was curled up when found. It was located under a rock in a field by a pond, there was only 1 found in the area.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1291063681; Occurrence Remarks: a very small snake, probably a hatch year juvenile.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1132412198; Occurrence Remarks: Found under rock above penny royal at a pond. It was brown with light brown strips. Rattle was darker than rest of body. Was about 1.5 long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1944379074; Occurrence Remarks: Male 35 (part of a radiotelemetry study), in ambush coil near ground squirrel burrows.;; Coordinate Uncertainty in Meters: 1144.00000.

GBIFID: 4405399379; Occurrence Remarks: Recently dropped here as I walked here about the same time yesterday and it wasnΓÇÖt here. A couple wasps seem to be feeding on it. I wonder what happened to this snake.;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1132416936; Occurrence Remarks: Unfortunatly this snake was dead. Not sure why;; Coordinate Uncertainty in Meters: 76.00000.

GBIFID: 1132419557; Occurrence Remarks: We found this rattlesnake between a grassland and an oak woodland, under a log. It was approximately 2-3 feet long but we were not going to check. It looked like a Diamondback with a striped tail.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4407407247; Occurrence Remarks: Sacramento Bar.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4458335338; Occurrence Remarks: Snapshot of a little one. Sacramento, CA;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4416940781; Occurrence Remarks: small juvenile, safely relocated from a clientΓÇÖs front garden;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 4420927157; Occurrence Remarks: eEeee;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1946358766; Occurrence Remarks: On approach to Cable;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2283002431; Occurrence Remarks: Patricia studies a little dead rattlesnake as we descend Hood Mountain.;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 1143541192; Occurrence Remarks: Naturalist with 8 inch rattlesnake;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 1986603030; Occurrence Remarks: I think..?;; Coordinate Uncertainty in Meters: 1953.00000.

GBIFID: 1143544612; Occurrence Remarks: Dead young rattlesnake on fire road;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4510409402; Occurrence Remarks: Several others and I saw this snake while doing a herpetology (and other creatures) survey at 26 spots at UCD-operated Quail Ridge Reserve, one of many nature reserves belonging to the university of California.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4606652137; Occurrence Remarks: Something or someone killed it recently. I found it dead.;; Coordinate Uncertainty in Meters: 94.00000.

GBIFID: 4607024519; Occurrence Remarks: More and more seen each year since Tubbs fire in 2017;; Coordinate Uncertainty in Meters: 84.00000.

GBIFID: 4852772616; Occurrence Remarks: Approx 4-feet long, approx 3 diameter;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2012988898; Occurrence Remarks: Driving through the mountains, we spooked a golden eagle that was perching on a forest service road. When it took off, it dropped this impressive mostly-dead rattler and then perched nearby to watch us (see second photo). Note how the head was mauled, but within a few minutes this snake scared us all by starting to rattle, then starting to slither, then trying to eat every rock in his agony-laden path. Im guessing this is Crotalus oreganus, the great basin rattlesnake, but Im no expert. This observation is for the snake, the eagle can be found here: https://www.inaturalist.org/observations/66968758;; Coordinate Uncertainty in Meters: 15000.00000.

GBIFID: 891063074; Occurrence Remarks: This very dark colored snake was found near the end of a culvert.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4855220933; Occurrence Remarks: In our camp ground on a gravel trail. So beautiful here.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2234750612; Occurrence Remarks: road kill;; Coordinate Uncertainty in Meters: 6170.00000.

GBIFID: 4867814129; Occurrence Remarks: found these three underneath a board that usually houses 4 or more garter snakes at a time. it was a relatively cool and overcast day but had reached about 60 degrees that evening;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4872234317; Occurrence Remarks: 565 mm SVL male, missing the end of its tail and rattle, plus other recent trauma likely indicating a narrow escape from a predator.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4872387104; Occurrence Remarks: Spotted along the American River Bike trail. Very lucky to not got bit as I stepped very close to it and did not notice it. Unsure if it attempted to rattle due to small size and other noises in the bushes, footsteps or talking. I encouraged into the bushes with a long stick.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4875111033; Occurrence Remarks: could be a gopher snake or something else, couldnt really see it well enough to tell;; Coordinate Uncertainty in Meters: 210.00000.

GBIFID: 4891854293; Occurrence Remarks: (Relocated across street.);; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4901964669; Occurrence Remarks: 1 of 4 sheds, and one rattlesnake seen.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4904020747; Occurrence Remarks: Andrea the slithering fella. She was mad spooked.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 4904287318; Occurrence Remarks: Baby rattle snake that could possibly be a foot long or more;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4908880431; Occurrence Remarks: Talia the snek. Almost stepped on herΓÇª my bad broski.;; Coordinate Uncertainty in Meters: 426.00000.

GBIFID: 2237523420; Occurrence Remarks: The snake is retreating off the pathway to avoid contact;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 4911133259; Occurrence Remarks: Saw this small rattlesnake on North Burma trail;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4919510217; Occurrence Remarks: Rattlesnake shed, not a full shed but pretty big, probably from an adult. Found near Turtle Pond in a rocky area.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4923790298; Occurrence Remarks: Slithering right out of his home, or what I assume is his home.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4925928747; Occurrence Remarks: Using suggested name;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4937072853; Occurrence Remarks: Found DOR in Northern California;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1227726268; Occurrence Remarks: Uhhhh yeah, later we found this little guy INSIDE the house. Next time I am moving them right away.;; Coordinate Uncertainty in Meters: 130.00000.

GBIFID: 4946509288; Occurrence Remarks: Hard to tell from the pic, but that classic rattlesnake pattern was definitely visible;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4945642394; Occurrence Remarks: Two snakes appeared to be mating. Thought they were rattlesnakes from a distance, but upon further review fairly certain they were gopher snakes.;; Coordinate Uncertainty in Meters: 187.00000.

GBIFID: 4950411485; Occurrence Remarks: Natural den unlike the retaining wall here thatΓÇÖs also serves as a den. Around 3 adult sheds and 2-3 visible baby sheds.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4950490206; Occurrence Remarks: Relocated across street.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4952459171; Occurrence Remarks: ???? 1st pic in situ;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 2242932307; Occurrence Remarks: while pursuing an acmon blue butterfly we were joined by this intruder who quickly realized 3 was a crowd and quietly retreated beneath some shrubbery;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4976302757; Occurrence Remarks: Awwwww man! Would have KILLED to see such a smoll little rattlesnake. Shed found under small piece of wood, bark sized.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5006730533; Occurrence Remarks: Handsome guy;; Coordinate Uncertainty in Meters: 38.00000.

GBIFID: 5007044325; Occurrence Remarks: I am not sure of this ID as the stock photos of this species are not that greatΓÇª;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 891063980; Occurrence Remarks: This large rattler was caught up in some bird netting I had on a tree. This is the third time in twelve years that such a thing has happened. I have found that they cannot go backwards so if their head gets into something too far that their body wont fit through, they are lost. I put it out for the scavengers and it was gone in 24 hours.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2244334391; Occurrence Remarks: About 3 long, dark, rattle appeared to have been damaged. It slithered away from where I was pulling Spanish Broom, went around an oak, and coiled up under some weeds.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5063757041; Occurrence Remarks: Scavenged by Western Yellowjackets (Vespula pensylvanica), whose observation is here: https://www.inaturalist.org/observations/260439502;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5076978550; Occurrence Remarks: Old skin;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 5087342365; Occurrence Remarks: First time IΓÇÖve seen one here in years;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5087392361; Occurrence Remarks: You can see the face - very blurry, but there above the twigs;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5088040554; Occurrence Remarks: ID not 100% happy to hear feedback. Not sure how this poor snake ended up on a busy sidewalk downtown away from any appropriate habitat. May have been transported dead or been a stowaway.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 5104628728; Occurrence Remarks: Saw 4 at the den today, 2 of which I already have on iNat;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5104736642; Occurrence Remarks: The adult is already registered on iNat, this is for the baby to the left of it;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1249297858; Occurrence Remarks: First active rattlesnake of the year. This female is radiotagged and stretched out next to the log where she has been since November.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 5134587270; Occurrence Remarks: Juvenile, about 18 inches long;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2269314870; Occurrence Remarks: road cruised;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 2269314692; Occurrence Remarks: dead on road;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5140465266; Occurrence Remarks: For a 55 degree and rainy day I ainΓÇÖt doing too bad;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5140478061; Occurrence Remarks: Feeling like feb out here;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 5153091012; Occurrence Remarks: We could see it clearly and when it saw us it rattled REALLY LOUDLY!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153359963; Occurrence Remarks: No snakes in pics provided ≡ƒÿ₧ Only rattlesnake seen was at one of the dens;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5154705095; Occurrence Remarks: About 1 long.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2283108157; Occurrence Remarks: In ambush on log jam in small creek. Note that it is hiding rattle from view.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2283109344; Occurrence Remarks: Was in ambush on side of dry wash, retreated by climbing up bush.;; Coordinate Uncertainty in Meters: 96.00000.

GBIFID: 2283109438; Occurrence Remarks: Rattlesnake seen crossing the north side of the American River Bike Trail by Lake Natoma just east of the Nimbus Dam.After crossing the bike trail the rattlesnake tucked under some scrub oak near the side of the trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153285595; Occurrence Remarks: Saw this massive snake under rocks, at first wr thought it was a giant gopher snake, i touched it with a stick and when it movex we saw the striped tail and heard the rattle dragging on the rocks and we knew it was a rattlesnake This snakes body was so thick, like maybe a bit thicker than a soda can, it was huge and fat, i wish it came out more because i wanted to see the whole thing This is also my first rattlesnake ive seen in the wild so thats pretty cool;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5168145958; Occurrence Remarks: Hunkered in at the base of rock structure at the environmental education center, accompanied by a beware of snake sign;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5168483422; Occurrence Remarks: So fat!!!!;; Coordinate Uncertainty in Meters: 182.00000.

GBIFID: 2283206911; Occurrence Remarks: About 28 long. Tail looked intact but no rattles, not even a button. Seen clearly.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5176928052; Occurrence Remarks: Best looking NorPac IΓÇÖve ever seen. Comparable to a lute from the Great Basin. Not the striped racer I was looking for tho;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 2294496908; Occurrence Remarks: Juvie. No harm doneΓÇöcarefully escorted from high traffic area in county park.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 5198640697; Occurrence Remarks: The map place in iNaturalist says Castle Valley. This is really Beaver Creek, UT. The GPS location is accurate.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5198298041; Occurrence Remarks: Hunting just below wooden footbridge near springs along the Vista trail, Sugarloaf Ridge State Park.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5198797738; Occurrence Remarks: Measured this distance/length after the fact. +- 50;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1269539898; Occurrence Remarks: Large adult male;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2294623160; Occurrence Remarks: This guy was under the deck and started rattling when we walked on the deck.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1265572249; Occurrence Remarks: Pair of snakes found beneath an overturned water trough. One quite aggressive, a much older individual content to be quite still.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 5216563525; Occurrence Remarks: Repeat visit ≡ƒÿ▓ https://www.inaturalist.org/observations/290314134;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5215770507; Occurrence Remarks: Too dark...inat says its a rattler but I saw no rattle;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5216892520; Occurrence Remarks: What kind of snake is thi? Found this snake in my kayak after fishing at Lake Nagasawa for about five hours. I only realized it was there when I felt something brush up against my ankle as I started to head back to shore. I brought my legs close to me and kept my tackle bag between it and me and quickly paddled back. It might have gotten in when I left my kayak unattended for about half an hour.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2311397657; Occurrence Remarks: It was dry and sunny. On grassy area and hid under sticks. only one.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2311431966; Occurrence Remarks: very calm, not coiled, didnt rattle when approached,tongue didnt flick out. About 3 ft. Another rattle snake was also seen within 10 meters. There was contact and they both coiled together in the air which looked more like a fight then mating. The bigger one that was in the tree scared the one pictured here away.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5238114124; Occurrence Remarks: Found by mom on the way back home from work. I did not see it personally;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5238231735; Occurrence Remarks: Lunchtime photos with this very relaxed rattler. Guessing lunch is a rat ΓÇö all I really know is that the tail is too long to be a vole. Oat Hill Mine trail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2331938395; Occurrence Remarks: This particular snake and another of the same species (and similar size) were both found in close proximity to a large fig tree. They engaged briefly in what appeared to be a territorial standoff. Its approximately 3 feet long, with black banding across the entire body; its face is white with the exception of small black bands around the eyes.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2366115385; Occurrence Remarks: killed small dog, photo by A. Galloway;; Coordinate Uncertainty in Meters: 831.00000.

GBIFID: 2366123291; Occurrence Remarks: About 18, on the paved River Access Trail,;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1269568687; Occurrence Remarks: Very dark individual, almost steeped on it while looking up into a buckeye tree.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891711614; Occurrence Remarks: Located after finding fresh tracks and mutliple fresh lays.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2423180862; Occurrence Remarks: +/- 3 feet long. Dry skin on face, appears to be about to shed.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 1272095928; Occurrence Remarks: One of a pair of rattlesnakes which I have observed several times a year in this location, for the past five years.;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1272101092; Occurrence Remarks: This is the same snake I have shown before, but today I see his eyes are glazed over like he about to shed his skin.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 1272109288; Occurrence Remarks: Found adjacent to creek, immediately proceeded to shake its rattle and tried running into the woods before being caught.;; Coordinate Uncertainty in Meters: 113.00000.

GBIFID: 1272110723; Occurrence Remarks: Didnt get too close for obvious reasons. Only had my phone camera so couldnt get many details. But I think this is the only species it this range.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891066062; Occurrence Remarks: At first we thought this little guy (about 11 inches) was dead until it decided to move along.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891066093; Occurrence Remarks: I was taking wood off a pile to split it and was glad I was being cautious when I saw this guy. It is 12 to 13 inches long.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1291138226; Occurrence Remarks: I found this rattlesnake after I glanced roughly a foot to my left while sitting on a rock. It appears to be a baby rattlesnake, but the species I am not sure of. It was about a foot long when it extended its body.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1291138251; Occurrence Remarks: Baby western rattlesnake. Light brown body with dark brown spots. About 12 inches long. Found under a rock by an oak tree;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1305144331; Occurrence Remarks: This rattlesnake was found sitting behind a log, trying to stay in the shade and avoid the hot sun. It stayed still as I tried to get close for pictures, and every once in a while, it would quickly flick its tongue in and out of its mouth. I was surprised that it didnt rattle its tail, as that is what rattlesnakes are known to do when exposed to humans(or other species that it is skeptical about).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1305155865; Occurrence Remarks: Beautiful young snake; about 12.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1305162157; Occurrence Remarks: About 14 inches long.;; Coordinate Uncertainty in Meters: 249.00000.

GBIFID: 2579227020; Occurrence Remarks: Baby rattler;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2603542521; Occurrence Remarks: Found it by the garden so captured it and moved it away from there.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1323029000; Occurrence Remarks: Almost stepped on this one;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 1453141716; Occurrence Remarks: Free-ranging telemetered Male 35 (part of a multi-year study) sucking rain water off of his own skin this morning. Autofocus phone camera did not allow a well-focused photo through foliage.;; Coordinate Uncertainty in Meters: 344.00000.

GBIFID: 1453150038; Occurrence Remarks: Baby Northern Pacific Rattlesnake found just past a ground-nesting wasp nest on the Meadow Trail at Effie Yeaw Nature Center;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 1453167184; Occurrence Remarks: Baby rattle snake on path as we walked around the grounds;; Coordinate Uncertainty in Meters: 58.00000.

Occurrence Remarks: My knowledgeable friend says this will probably be elevated to _C. lutosus_ at some point.

GBIFID: 2626221715; Occurrence Remarks: Crotalus oreganus (Northern Pacific Rattlesnake);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2634027859; Occurrence Remarks: Effie Yeaw Nature Center, Bluff Trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2634315795; Occurrence Remarks: First Rattle snake since the fires in our yard;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1453428244; Occurrence Remarks: Very long, over 3 ft in length. Broken rattle. Calm and tolerant of our presence.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1453435495; Occurrence Remarks: First rattlesnake sighted this year at Effie Yeaw Nature Center study site. Yellow/blue paint in rattle identifies him as Male 40, marked but not telemetered. He is at his usual hibernation shelter. Total overcast, intermittent rain, air temp 13C. No others visible.;; Coordinate Uncertainty in Meters: 1376.00000.

GBIFID: 4863351061; Occurrence Remarks: A young rattlesnake with a button and single rattle segment. It has shed its skin twice in its lifetime. This point in development is the first stage when a rattlesnake can actually rattle.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2823107538; Occurrence Remarks: My amygdala completely took over. I leaped backwards before I could form the word snake in my brain. My brother-in-law jumped because I jumped. This shy snake slowly withdrew. As she finally turned her head downhill, she rattled a warning for us to leave her alone. We did.;; Coordinate Uncertainty in Meters: 1698.00000.

GBIFID: 1500225303; Occurrence Remarks: No rattle! Possible birth defect?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2851147000; Occurrence Remarks: hot morning approaching 100┬░, rattlesnake sought shade beneath fallen tree trunk;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2851150198; Occurrence Remarks: Found this morning in the carport;; Coordinate Uncertainty in Meters: 62.00000.

GBIFID: 2850852594; Occurrence Remarks: This neonate was found basking at the entrance of a hole, and quickly retreated upon approach. Over the next hour and a half, this same neonate was observed in the same location on 2 other occasions as I passed by on the way to/from my vehicle. This individual could not have been more than a few days old, as it only had the very first segment of its rattle. A search of the surrounding area did not produce any other individuals.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2850829552; Occurrence Remarks: Fresh DOR, still moving slightly. Extremely windy, sustained around 30mph, with higher gusts. Storm system was moving through, but there was no precipitation within 100 miles.;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 1500347232; Occurrence Remarks: Found behind Sports Complex, removed to nature preserve nearby.;; Coordinate Uncertainty in Meters: 688.00000.

GBIFID: 899965244; Occurrence Remarks: This one was green. Recent heavy rain probably made it wake up early to sun bathe. Super sluggish but with a fierce rattle when captured. Was transported away from population.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 1562954897; Occurrence Remarks: About 2 ft long;; Coordinate Uncertainty in Meters: 59.00000.

GBIFID: 1562958988; Occurrence Remarks: Was under the deck in front of our house.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1563420646; Occurrence Remarks: Adult female in an ambush coil under a thick mat of dead branches covered by annual vegetation (Female #66, part of a radio-telemetry study at Effie Yeaw Nature Center; note sutures from radio replacement surgery earlier this spring);; Coordinate Uncertainty in Meters: 344.00000.

GBIFID: 2988593211; Occurrence Remarks: appeared to be coming up from the lake, bound for the bluff, mississippi bar;; Coordinate Uncertainty in Meters: 4.00000.

Solano, California: 38.493703, -122.106003: : 4/19/2026: Ebobo: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1802624095; Occurrence Remarks: We seem to be raising these in our Moab yard. We saw an adult two years ago and last year, two young. This snake is all of 6. I am EXTREMELY careful when working in the gardens!;; Coordinate Uncertainty in Meters: 28240.00000.

GBIFID: 911494276; Occurrence Remarks: Also known as a Northern Pacific Rattlesnake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911497623; Occurrence Remarks: Sunning itself along the river.;; Coordinate Uncertainty in Meters: 51.00000.

GBIFID: 891078494; Occurrence Remarks: this snake was found under a porch in pepper wood preserve. it was caught and relocated were it would not be a hazard to people. i was able to take the photo before it was taken away. had ten buttons on its tail.;; Coordinate Uncertainty in Meters: 1341.00000.

GBIFID: 3070750042; Occurrence Remarks: Captured this Rattler under a storage container. Relocated - not killed.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3070647616; Occurrence Remarks: Tail end only. This snake moved too fast into the grass, but its rattle is visible at the center left edge of the photo.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1586125064; Occurrence Remarks: In the Bark house.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1586125363; Occurrence Remarks: Two snakes breeding,;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3090939337; Occurrence Remarks: There were scores of people close by here at the river when this snake decided to cross over by the Fair Oaks footbridge.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3097080888; Occurrence Remarks: Photo credit: Carol Chen;; Coordinate Uncertainty in Meters: 82.00000.

GBIFID: 3097239433; Occurrence Remarks: Faithfully guarding the trail ...;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1621800953; Occurrence Remarks: About 3 + ft long and well fed. Dont know what happened to the rattle;; Coordinate Uncertainty in Meters: 170.00000.

GBIFID: 3112956755; Occurrence Remarks: Young rattlesnake on side of trail. Slittered away into the grass.;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 3113285038; Occurrence Remarks: Great Basin Rattlesnake;; Coordinate Uncertainty in Meters: 90.00000.

GBIFID: 3113683628; Occurrence Remarks: Crossing gravel portion of Main Ave. south side very near Lake Natoma.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891080934; Occurrence Remarks: Juvenile rattlesnake, Northern Pacific. Wasnt sure if it had a rattle or not on it. Length: 9-10 inches. Spotted in evening on a warm day on bark.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1024201018; Occurrence Remarks: Tan with dark brown markings on back, has rattle with eight segments, puffy cheeks, scales have velvety appearance;; Coordinate Uncertainty in Meters: 39.00000.

GBIFID: 1668866111; Occurrence Remarks: Our California Naturalist Class had just finished talking about this species! Amazing timing!;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1668868196; Occurrence Remarks: Young of the year, just 2-3 weeks old.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 1668874650; Occurrence Remarks: Just finished swallowing a young California ground squirrel (Otospermophylus beecheyii);; Coordinate Uncertainty in Meters: 1376.00000.

GBIFID: 3301827715; Occurrence Remarks: Pretty young at about 12 to 14 inches with two buttons.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1677279113; Occurrence Remarks: while walking back on an animal path i had just jogged along i froze as a rattlesnake was beside my foot (fotoed) and several others were within a 10 radius. for the next week i returned to this spot when running and observed 2 snakes sunning and would sit near, a few feet, from them. within a minute or so the larger, male, would become uneasy and slither to safety down into the rocks. the female would remain immobile for longer period, 5 minutes or so, then would also disappear into the rocks. however, the last time observed, rather than disappearing into the rocks the male came towards the female and me, adopting a defensive posture atop the female and remained there until i left some 5 minutes later. i was surprised and impressed by this gentlemans gallant behavior.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1024208876; Occurrence Remarks: Skin found under rock;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3327858510; Occurrence Remarks: Young snake, but glad to see it. SO MANY mice;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3314550307; Occurrence Remarks: Found these 2 younglings near building and safely relocated away from buildings and people.;; Coordinate Uncertainty in Meters: 526.00000.

GBIFID: 1677306306; Occurrence Remarks: Observed in a tree near the trailhead on the west rim of Horseshoe Canyon.;; Coordinate Uncertainty in Meters: 1500.00000.

GBIFID: 1677313398; Occurrence Remarks: saw this little guy after our class which was surprisingly about rattle snakes what a coincidence;; Coordinate Uncertainty in Meters: 163.00000.

GBIFID: 3321129319; Occurrence Remarks: !;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3325515297; Occurrence Remarks: I confirmed it had a rattle on the tail end;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3335126524; Occurrence Remarks: I was wearing sandals,stepped on it in the dark and broke its rattle and did not get bit;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 3333363539; Occurrence Remarks: Highest elevation (about 7,500 feet MSL) that I have ever seen a Northern Pacific Rattlesnake. Photo taken near Shot Rock Rest Stop adjacent to State Highway 88.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3333177583; Occurrence Remarks: Recently hatched young Northern Pacific Rattlesnake; looks like it may have eaten its first meal.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3333473585; Occurrence Remarks: large adult female warming herself in afternoon Spring sunshine;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3337649996; Occurrence Remarks: Rattlesnake of some sort;; Coordinate Uncertainty in Meters: 88.00000.

GBIFID: 3355405006; Occurrence Remarks: climbing in a rose bush;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1807281197; Occurrence Remarks: Chuckar Trailhead;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1805391054; Occurrence Remarks: On route to Quandary Direct;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1805391163; Occurrence Remarks: On route to the Squeeze;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 3408026731; Occurrence Remarks: Had some rough spots. Looks like hibernation may have been rough on him. He wasnΓÇÖt moving much;; Coordinate Uncertainty in Meters: 28210.00000.

Yolo, California: 38.514205, -122.080125: : 7/2/2026: Lena: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.436055, -122.50878: : 6/29/2026: joan_molina: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Sacramento, California: 38.662188, -121.1314: : 8/28/2025: casthecreature: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 22.00000.

Sonoma, California: 38.680577, -122.879075: : 8/29/2025: Stop4Snakes!: 29 Aug 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Located on the Cove Mountain Road west of Koosharem mid-day.; Coordinate Uncertainty in Meters: 1642.00000.

Sacramento, California: 38.61708, -121.31022: : 9/1/2025: skmaxey: 1 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Sacramento, California: 38.617001, -121.311111: : 9/3/2025: Paul Cordero: 3 Sep 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Sonoma, California: 38.437097, -122.516278: : 9/6/2025: raisd_bywolves: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 51.00000.

Sacramento, California: 38.618438, -121.309028: : 9/6/2025: skmaxey: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.375632, -122.509514: : 7/11/2026: jozaki: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: About 10 in hand and ~4# outside the other end of the 2 tube = ~38; Coordinate Uncertainty in Meters: 28210.00000.

Sonoma, California: 38.539833, -122.664878: : 6/27/2026: Ethan Hobbs: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 64.00000.

Occurrence Remarks: Juvenile.; Coordinate Uncertainty in Meters: 21.00000.

Sonoma, California: 38.456588, -122.646653: : 6/2/2026: horse #7: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: 8ΓÇ¥. Dead, probably run over by cyclist; Coordinate Uncertainty in Meters: 9.00000.

Sonoma, California: 38.680144, -122.881786: : 12/6/2025: Stop4Snakes!: 6 Dec 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

Sacramento, California: 38.565611, -121.391685: : 9/13/2025: ahennessycdfw: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Thought it was dead but was very much alive, after some photos I moved this beauty off the trail

Occurrence Remarks: Sorry about the gruesome pictures. Road kill; Coordinate Uncertainty in Meters: 46960.00000.

GBIFID: 3773587391; Occurrence Remarks: Crossing the dirt road. Adult. Not very happy to see us.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3773031808; Occurrence Remarks: Skeleton under a rock. Given the solenoglyphous fangs, definitely a rattlesnake. Lutosus is the only species in the area.;; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: Den site; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Occurrence Remarks: Odd. No blotches except for towards the head, otherwise patternless. Originally thought it may have been a very large racer; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Occurrence Remarks: Found DOR in Northern California; Coordinate Uncertainty in Meters: 28181.00000.

Occurrence Remarks: Thought I might see one of these today, similar conditions to when I flipped 3 in November last year. Safely moved out from under, then back under the rock with a stick; Coordinate Uncertainty in Meters: 28210.00000.

Mesa, Colorado: 39.215861, -108.748085: : 11/7/2025: lillipottery-yahoo-com: 7 Nov 2025 ; Coordinate Uncertainty in Meters: 28121.00000.

Butte, California: 39.321242, -121.816403: : 7/27/2024: Theodore Lee: 27 Jul 2024 ; Coordinate Uncertainty in Meters: 4705.00000.

Lake, California: 38.87328, -122.433678: : 7/26/2026: benamann: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Nevada, California: 39.15303, -121.167132: : 9/4/2025: melaniefine: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: YOY ΓÇöΓÇö also saw a striped racer, though it was too fast and climbed up into a bay tree; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: juvenile, hanging out near public bathroom; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Deceased rattlesnake, found in Utahraptor State Park main road.; Coordinate Uncertainty in Meters: 5.00000.

Placer, California: 38.890533, -121.05847: : 7/4/2026: jhagler: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 142.00000.

GBIFID: 4171882806; Occurrence Remarks: Mark Themick;; Coordinate Uncertainty in Meters: 1129.00000.

GBIFID: 1848787547; Occurrence Remarks: Young North Pacific Rattlesnake;; Coordinate Uncertainty in Meters: 5000.00000.

GBIFID: 3873569181; Occurrence Remarks: Was crossing the trail when I walked up. Only rattled a bit, which was good because I might have walked over it XD;; Coordinate Uncertainty in Meters: 0.11000.

Millard, Utah: 38.761417, -112.497239: : 6/7/2025: Joey Mugleston: 7 Jun 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 3712515670; Occurrence Remarks: Compared photos and itΓÇÖs not the same snake as last time. Around 57 deg but air was dry and not cold.;; Coordinate Uncertainty in Meters: 28210.00000.

Lake, California: 38.975908, -122.524125: : 5/7/2026: moses_outdoors: 7 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3985846311; Occurrence Remarks: Went into the outcrop and I went another way;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4145227732; Occurrence Remarks: Assisting with rattlesnake tracking in GRBA;; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.939353, -122.571442: : 3/18/2026: Gregory Wada: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Churchill, Nevada: 39.253923, -118.856007: : 5/31/2026: Andrei: 31 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Placer, California: 39.109561, -120.920578: : 5/9/2026: typicalbluedick: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.70352, -122.520645: : 4/5/2026: nicosmith86: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Placer, California: 38.953647, -121.121605: : 5/25/2026: Zack Shelley: 25 May 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Placer, California: 38.948405, -121.128989: : 4/19/2026: veichhorn: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Habitat currently under development. This snake will soon be displaced or killed, fortunately there is plenty of habitat that it can move into.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: 2 rattlesnakes, but the 2nd went under the log before I could get a photo; Coordinate Uncertainty in Meters: 20.00000.

Carson City, Nevada: 39.171076, -119.806662: : 4/20/2026: Paul Howell: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 1216.00000.

Sonoma, California: 38.704481, -122.757937: : 4/22/2026: plant-anthropology: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 22.00000.

Sutter, California: 39.254004, -121.817673: : 4/23/2026: Anna Rivera Roy: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Found struck by a car. Truly a beautiful animal.; Coordinate Uncertainty in Meters: 28151.00000.

El Dorado, California: 38.802463, -120.134468: : 4/19/2026: joeymstringer: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 60.00000.

Lake, California: 38.87153, -122.422387: : 11/4/2025: benamann: 4 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

White Pine, Nevada: 39.253629, -114.492015: : 5/21/2026: Hans Hallman: 21 May 2026 ; Coordinate Uncertainty in Meters: 3595.00000.

Occurrence Remarks: Roadkill; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Roadkill; Coordinate Uncertainty in Meters: 3.00000.

Mesa, Colorado: 39.094517, -108.651435: : 5/23/2026: Annie Savaria-Watson: 23 May 2026 ; Coordinate Uncertainty in Meters: 28151.00000.

Occurrence Remarks: The rattlesnake was stretched out across the trail, enjoying the sun and politely slithered away; Coordinate Uncertainty in Meters: 4.00000.

Millard, Utah: 38.883827, -112.319496: : 5/24/2026: Aspen Flake: 24 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Sonoma, California: 38.799257, -122.962885: : 5/24/2026: Archer Barrett: 24 May 2026 ; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Approximately 19 inches long with a 5 inch tail.; Coordinate Uncertainty in Meters: 0.11000.

Colusa, California: 39.34228, -122.734933: : 5/24/2026: John Kelly: 24 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Lake, California: 38.82413, -122.569222: : 5/25/2026: seth_mueller: 25 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

El Dorado, California: 38.714592, -121.097467: : 5/26/2026: J. Roe: 26 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Sleeping on the side of a creek. Pretty dang cool to see!; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1880522826; Occurrence Remarks: Found dead in creek. 26 inches long.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 4130016554; Occurrence Remarks: Rattlesnake found after mowing of field;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 4116173455; Occurrence Remarks: Dead consuming lizard.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 3892282925; Occurrence Remarks: Sage, aspen, pinyon-juniper. 90% cloud cover. Humid;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3858757265; Occurrence Remarks: Young rattlesnake approximately 16 inches long.;; Coordinate Uncertainty in Meters: 0.11000.

Colusa, California: 39.103212, -122.427713: : 5/7/2025: Amelia Ryan: 7 May 2025 ; Coordinate Uncertainty in Meters: 138.00000.

El Dorado, California: 38.714722, -121.095855: : 3/4/2026: J. Roe: 4 Mar 2026 ; Coordinate Uncertainty in Meters: 50.00000.

Sutter, California: 39.026539, -121.821258: : 3/5/2026: Grant: 5 Mar 2026 ; Coordinate Uncertainty in Meters: 59.00000.

Occurrence Remarks: 4 crotes were seen in this rock pile, 3 were photographed; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: The rattle of a norpac, as it buzzed me; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: Screenshots taken from a video, as a norpac retreated into its rocks; Coordinate Uncertainty in Meters: 28181.00000.

Colusa, California: 39.033147, -122.432183: : 3/8/2026: ryanmoonbeam: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Lake, California: 38.873903, -122.425972: : 3/14/2026: benamann: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Placer, California: 38.79954, -121.107642: : 3/6/2026: Ethan Thomason: 6 Mar 2026 ; Coordinate Uncertainty in Meters: 318.00000.

Placer, California: 38.821069, -121.097861: : 3/15/2026: jmeyer88: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Placer, California: 38.94758, -121.127669: : 5/23/2026: veichhorn: 23 May 2026 ; Coordinate Uncertainty in Meters: 40.00000.

Placer, California: 38.74057, -121.148353: : 5/7/2026: Greg Davis: 7 May 2026 ; Coordinate Uncertainty in Meters: 133.00000.

Sonoma, California: 38.764, -123.009956: : 11/9/2025: Stop4Snakes!: 9 Nov 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1065609056; Occurrence Remarks: Found crossing road at night.;; Coordinate Uncertainty in Meters: 1564.00000.

El Dorado, California: 38.766892, -120.88233: : 4/29/2026: lindawelch04: 29 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

El Dorado, California: 38.888264, -121.005482: : 5/3/2026: chrisy427: 3 May 2026 ; Coordinate Uncertainty in Meters: 320.00000.

Lake, California: 38.873403, -122.42505: : 5/2/2026: sfandrew: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: I came across this rascal while out hiking today; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Unfortunately, this individual was shot before I could offer to relocate it.; Coordinate Uncertainty in Meters: 423.00000.

Placer, California: 38.923459, -121.030203: : 5/10/2026: Andrew Durso: 10 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Placer, California: 39.111669, -120.93627: : 3/22/2026: villagernursery: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 163.00000.

Occurrence Remarks: Alive on road AOR; Coordinate Uncertainty in Meters: 5.00000.

El Dorado, California: 38.702819, -121.110597: : 9/21/2025: thanksforallthefish: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Nevada, California: 39.206489, -121.054759: : 9/23/2025: Benito Santos: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Baby, only had one rattle. Found in easy up; Coordinate Uncertainty in Meters: 4.00000.

Mendocino, California: 39.194792, -123.161225: : 9/23/2025: EAllen: 23 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Nevada, California: 39.327583, -120.649528: : 9/27/2025: girnarjoshi: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 77.00000.

Occurrence Remarks: Found dead on road; Coordinate Uncertainty in Meters: 3.00000.

Placer, California: 38.954487, -121.205322: : 5/11/2026: iisraelxo: 11 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

White Pine, Nevada: 38.733232, -114.343103: : 5/13/2026: Lily Rice: 13 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Millard, Utah: 39.321422, -112.264542: : 5/9/2026: mkolste: 9 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Approximately 37 cm long with tail, tail 7 cm; Coordinate Uncertainty in Meters: 0.11000.

Grand, Utah: 38.709078, -109.726563: : 5/7/2026: bella_byron: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Colusa, California: 38.991698, -122.387733: : 5/12/2026: Steven Clinton: 12 May 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Yolo, California: 38.780694, -121.98148: : 3/22/2026: K Calderala: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 48.00000.

Yolo, California: 38.788816, -122.007315: : 3/22/2026: K Calderala: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 183.00000.

El Dorado, California: 38.714353, -121.095275: : 3/23/2026: J. Roe: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Lake, California: 38.871303, -122.423478: : 3/24/2026: benamann: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

El Dorado, California: 38.77094, -120.884679: : 3/29/2026: Jason Kwan: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

El Dorado, California: 38.77093, -120.88462: : 3/29/2026: gjwahine: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Yolo, California: 38.91195, -122.293197: : 3/30/2026: andy gluesenkamp: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 32.00000.

Colusa, California: 39.044227, -122.368448: : 3/30/2026: andy gluesenkamp: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 9723.00000.

Colusa, California: 39.037783, -122.4131: : 3/30/2026: andy gluesenkamp: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Colusa, California: 39.153797, -122.347633: : 3/30/2026: andy gluesenkamp: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: It was a HOT day in the foothills, with temperatures in the 80s, definitely reptile weather!; Coordinate Uncertainty in Meters: 8.00000.

Nevada, California: 39.216474, -121.217864: : 4/4/2026: katefavetti: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 13.00000.

El Dorado, California: 38.752231, -121.120411: : 4/5/2026: jmeyer88: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Napa, California: 38.709789, -122.261206: : 4/5/2026: Alison Young: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Nevada, California: 39.167704, -121.099239: : 4/8/2026: Kitu Kitty: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Sacramento, California: 38.708954, -121.169185: : 10/9/2019: Erik: 9 Oct 2019 ; Coordinate Uncertainty in Meters: 121.00000.

El Dorado, California: 38.752158, -121.05883: : 10/1/2025: J. Roe: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

White Pine, Nevada: 38.994912, -114.213517: : 10/5/2025: jdanielson: 5 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Placer, California: 38.935166, -121.057506: : 6/1/2026: Mason: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 84.00000.

Sonoma, California: 38.705294, -122.890282: : 12/6/2025: Stop4Snakes!: 6 Dec 2025 ; Coordinate Uncertainty in Meters: 28210.00000.

Mendocino, California: 39.16027, -123.229942: : 6/3/2025: derickbadwell: 3 Jun 2025 ; Coordinate Uncertainty in Meters: 31.00000.

Carson City, Nevada: 39.20784, -119.80352: : 7/9/2025: kellie: 9 Jul 2025 ; Coordinate Uncertainty in Meters: 1.11000.

Washoe, Nevada: 39.291843, -119.765632: : 6/4/2025: kellie: 4 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Only took one photo before moving it off the road.

Sutter, California: 39.025539, -121.821442: : 7/20/2026: Grant: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Colusa, California: 39.032586, -122.42897: : 6/3/2026: bhodder: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Almost stepped on this friend, hopefully this picture explains why. Crazy camouflage.; Coordinate Uncertainty in Meters: 28210.00000.

El Dorado, California: 38.71, -121.089644: : 6/6/2026: J. Roe: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Emery, Utah: 39.092915, -110.760831: : 6/9/2026: Sarah Baldwin: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 81.00000.

Emery, Utah: 39.098824, -110.762196: : 6/9/2026: Sarah Baldwin: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 62.00000.

Emery, Utah: 38.818189, -111.260563: : 6/8/2026: Jonathan Barth: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 28181.00000.

El Dorado, California: 38.704353, -120.790298: : 6/14/2026: florabrook: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 12894.00000.

Nevada, California: 39.138155, -121.172738: : 6/14/2026: smile_lines: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 28151.00000.

Sonoma, California: 38.7019, -122.763528: : 6/14/2026: George Chrisman: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sonoma, California: 38.724667, -122.755508: : 6/14/2026: George Chrisman: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Lake, California: 38.874105, -122.431808: : 6/19/2026: benamann: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 21.00000.

Occurrence Remarks: Almost never see rattlesnakes at the house. Have dogs and fam here so i scooped her up with a stick and put into a bucket. Released into a crote den just up the road, hopefully sheΓÇÖll do fine. Probably traveled a ways to get here in the first place. RELOCATE, DONΓÇÖT KILL.; Coordinate Uncertainty in Meters: 28210.00000.

Placer, California: 38.960596, -121.164474: : 6/21/2026: Selene Jamall: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.995065, -122.953286: : 7/12/2026: Laine McTague: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 28181.00000.

Alpine, California: 38.706362, -119.767145: : 7/12/2026: anitarashidi: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Sonoma, California: 38.717847, -123.001861: : 7/22/2026: injahairaland: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 10.00000.

El Dorado, California: 38.801778, -120.134225: : 6/23/2026: ElizabethR: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 78.00000.

Sonoma, California: 38.780092, -122.983369: : 6/23/2026: Archer Barrett: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 28210.00000.

Sonoma, California: 38.700935, -122.9026: : 6/23/2026: Archer Barrett: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 28210.00000.

Nevada, California: 39.226058, -121.11978: : 6/28/2026: sethgd: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Mendocino, California: 38.984591, -122.99039: : 6/28/2026: Laine McTague: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 28181.00000.

Lake, California: 38.927214, -122.832772: : 6/28/2026: Laine McTague: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 28181.00000.

Occurrence Remarks: A fun encounter. I was releasing a katydid (https://www.inaturalist.org/observations/319513479) that got inside the field station and this snake was right in the middle of the dark entry room (doors were closed--not sure how it got inside). I nearly stepped on the poor snake (in sandals of course. Me, not the snake). (The snake was carefully caught with a bucket and released in some nearby rocky oak woodland); Coordinate Uncertainty in Meters: 19.00000.

Lake, California: 38.873905, -122.431525: : 10/7/2025: Kristen Nelson: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.871647, -122.426055: : 10/8/2025: Kristen Nelson: 8 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.87398, -122.431603: : 10/7/2025: Sharon Estrada: 7 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Placer, California: 38.96187, -120.973137: : 10/11/2025: johnlikeplants: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 49.00000.

El Dorado, California: 38.814567, -120.925117: : 6/5/2026: Beth Lippmann: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Lake, California: 38.869772, -122.419428: : 3/22/2026: benamann: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3415630599; Occurrence Remarks: Big rattlesnake shed mushed up by the rain.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 1837756597; Occurrence Remarks: 3 feet long and 3 inch diameter dark markings, two inches of rattles;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 891091487; Occurrence Remarks: It was dusk and it is near our garage structure.;; Coordinate Uncertainty in Meters: 189.00000.

GBIFID: 1838368629; Occurrence Remarks: I first saw these guys when their rattle alerted me to their presence about 3 from my foot. Luckily they retreated back into their den without striking, the rattle pic is from my first encounter, the others are from about half an hour later when theyd come back out. There were at least two, possible three snakes. Obscuring the location due to a potential den.;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 3764555532; Occurrence Remarks: Saw this on a hike to see Sids Cabin on Sids Mountain in the San Rafael Swell, Utah. Overall length was probably less than 2 feet.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3772534435; Occurrence Remarks: unfortunately this beautiful snake was dead--not sure what the cause of death was but there was some substance coming out of the snake;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3859892197; Occurrence Remarks: Alive on road AOR . Found and shared by Jake Shaas.;; Coordinate Uncertainty in Meters: 120.00000.

El Dorado, California: 38.944975, -120.812229: : 5/27/2022: David Andreas de Rivera T├╕nnessen: 27 May 2022 :

GBIFID: 1841322203; Occurrence Remarks: Just a baby who had made a home in a gopher trap.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859871306; Occurrence Remarks: Roadkill. Rat or other rodent apparently in its belly;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 3858634751; Occurrence Remarks: My husband found this little baby in the driveway after work tonight. Although the snake looks larger here, its only slightly longer and about the same thickeness as a new pencil. Hubby just got close and used the zoom feature when he took the photo. I saw it too but wanted to leave it alone.;; Coordinate Uncertainty in Meters: 201.00000.

GBIFID: 3860607597; Occurrence Remarks: Crossing a road;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3873576060; Occurrence Remarks: We were both headed to the same tree, and surprised each other. Both of us let out auditory surprise... I took a picture and headed to a different tree;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 3873313956; Occurrence Remarks: Successful rattlesnake search in the Lake Tahoe basin! Id seen a photo of a rattlesnake in this area from 2017, so today I gave it a shot. Full shed with clouded over eyes. Id guess right around 3.5 long. Habitat shot shows snake in situ under the log if you zoom in;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3881395984; Occurrence Remarks: Safely escorted off the road.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3881361969; Occurrence Remarks: Found at elevation of 8440 feet.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3881615821; Occurrence Remarks: Found at elevation of 8480 feet.;; Coordinate Uncertainty in Meters: 246.00000.

GBIFID: 4067637595; Occurrence Remarks: Think it was ran over;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3889224798; Occurrence Remarks: Feeding on deer mouse;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3892689071; Occurrence Remarks: Well it took two hours but at 11:00 itΓÇÖs was 73 degrees soooΓÇª;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3892327284; Occurrence Remarks: Mama with three neonates. Heavily overcast. 77f.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 3902668683; Occurrence Remarks: Stayed in the same spot for about 3 hours, we hiked across him at least 3 times.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3903168662; Occurrence Remarks: Ran over by a park guest.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 3902928259; Occurrence Remarks: Submitted on behalf of Sandor Lengyel. Month is correct but date is approximate. Around 7300 elev. near Lost Lake. Estimated to be around 4 long.;; Coordinate Uncertainty in Meters: 1000.00000.

GBIFID: 3903045473; Occurrence Remarks: Two different rattlers on the road as I was walking back after my point counts.;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 3911972063; Occurrence Remarks: Found on Hiway 50, mp 92. Had it last fives inches hit by a car. Intestines were coming out of the side. I did kill it. So sad.;; Coordinate Uncertainty in Meters: 3854.00000.

GBIFID: 1880515695; Occurrence Remarks: Roadkilled on Silver Fork Rd first mile from Hwy 50;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3947285401; Occurrence Remarks: lifer;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 1880606289; Occurrence Remarks: Very small, couldnt have been more than 7 or 8 inches long when it was alive;; Coordinate Uncertainty in Meters: 190.00000.

GBIFID: 3961410831; Occurrence Remarks: Spot em;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 3985625091; Occurrence Remarks: Along the trail. Very chill!;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 4028841091; Occurrence Remarks: This is tragic. We only saw two other parties on the trail to Beale Falls ahead of us. This rattle snake muscles were still contracting some. The snake had been beheaded just a short time before we got there. Tragic. Why?;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4046553268; Occurrence Remarks: I followed this snake along a trail until it found a hiding place. It never used its rattle.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4076339264; Occurrence Remarks: Encountered this vibrant and feisty specimen on a night walk. Apparently, the heatwave made the daylight hours unbearable for both humans and reptiles!;; Coordinate Uncertainty in Meters: 4.00000.

Mesa, Colorado: 39.243111, -108.097038: : 4/3/2023: rpatersonmavscoloradomesaedu: 3 Apr 2023 :

GBIFID: 4096927743; Occurrence Remarks: Ran over :(;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4111806263; Occurrence Remarks: Photo taken in the El Dorado Hills Business Park. I worked in the EDH Business Park for 25+ years, so I know where most of the snake hangouts and dens are that havent [yet] been destroyed by the ongoing development. Note: All photos were taken with a telephoto lens well beyond the Rattlesnakes strike distance. The most difficult aspect was holding up the debris with my left shoulder while focusing the camera, and bending over for the last couple of photos as the Rattlesnake backed down into a shallow depression under the debris ........ estimated length about 30 inches. Looks like it recently shed its skin.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4112209971; Occurrence Remarks: Handsome little baby coming out to bask, but close to the trail on what turned out to be a fairly popular day. On our way back it was curled up deep in its grotto;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4116419855; Occurrence Remarks: Multiple snakes rattling at me but I could only see this one;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4116579506; Occurrence Remarks: No rattling and stayed in this position as I took pics from a distance in low light conditions (brightened image in photo editor);; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 4120903530; Occurrence Remarks: Adult hiding under a rock. There was another smaller rattler a few feet away (posted by @jacob555). Went back the next day... And they both were there! Same spots.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121046909; Occurrence Remarks: On the move. One of the rare times I spotted the snake before it knew I was there.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4120844629; Occurrence Remarks: So. Many. Rattlesnakes.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121021836; Occurrence Remarks: Yet another. This one was by the creek; probably had just gotten a drink.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4120861931; Occurrence Remarks: Stepped pretty near it and it half rattled. Was basking in the sun in the only warm part of an otherwise rainy day.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4120864030; Occurrence Remarks: Crossing trail by parking lot;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4120882224; Occurrence Remarks: A tiny little baby rattler;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1913166345; Occurrence Remarks: I was able to go around him ......slowly.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4127234110; Occurrence Remarks: Along the Red Onion Loop Hiking Trail near Moab, UT;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4129840845; Occurrence Remarks: Alive on road AOR;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4137965354; Occurrence Remarks: Seemed to be basking to digest a somewhat recent meal, the thickest part of the snake must have been 2.5-3 wide. Very calm though, didnt rattle or react much more than a couple of rapid tongue flips.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4137820934; Occurrence Remarks: Alive on road AOR;; Coordinate Uncertainty in Meters: 94.00000.

GBIFID: 4138093014; Occurrence Remarks: Flipped a pallet, and this sweet little infant mustve been half in and half out, as he sat there in a weird sideways-coiled ball for a minute. I suppose we were equally surprised by it all;; Coordinate Uncertainty in Meters: 150.00000.

GBIFID: 4145183068; Occurrence Remarks: First photo - middle of frame, just above the cluster of pine cones. Second photo - between the two boulders. Was in the middle of the road, glad we didnt run over this beaut!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4153720992; Occurrence Remarks: Alive on road;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4153972590; Occurrence Remarks: Dead by the side of the road. Hard to say if it was run over or if someone killed it, sadly.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4162581527; Occurrence Remarks: Dead on road DOR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4172055238; Occurrence Remarks: One of two seen;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4177533580; Occurrence Remarks: This snake should not be in this region, but it looks too much like the Arizona black rattlesnake to be anything else. This one was killed by a neighbor in their yard. I saw one a week or so before that while hiking in Cow Mountain on the East side of the Ukiah Valley. I was unable to get a photograph before it moved away. While this picture is not very sharp, the one I saw the hind 24 inches (the rest was obscured by the brush) was very shiny jet black with the narrow white bands and a fair number of rattles.;; Coordinate Uncertainty in Meters: 166.00000.

GBIFID: 4177316233; Occurrence Remarks: Found at 10,500ft elevation;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4400019989; Occurrence Remarks: Rattlesnake found at 10,650 feet of elevation;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4400400283; Occurrence Remarks: Eating young cottontail;; Coordinate Uncertainty in Meters: 83.00000.

GBIFID: 4407619313; Occurrence Remarks: Dead on road DOR Study animal 0739. Originally tagged in 2010 as a 6 year old. Snake was at least 19 years old when killed.;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 4430996169; Occurrence Remarks: A child had left a fake snake behind, which this child seemed to want to stay close to!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4430580765; Occurrence Remarks: Number one target in Colorado for the trip, found about 45 minutes from the Utah border.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 4436131009; Occurrence Remarks: check id;; Coordinate Uncertainty in Meters: 1685.00000.

GBIFID: 1950027402; Occurrence Remarks: Found under scrap metal;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4597042445; Occurrence Remarks: Found under a piece of bark on the ground;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 4597113833; Occurrence Remarks: Observed under natural cover, Sacramento Valley, California;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 2005388521; Occurrence Remarks: Could only see the tail, poking out of the weeds;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 4846879583; Occurrence Remarks: Two snakes together;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4853009453; Occurrence Remarks: Found deceased :(;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4852809791; Occurrence Remarks: Tripwire!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4852057673; Occurrence Remarks: tail view is a rear-view mirror photo!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2028451554; Occurrence Remarks: Garnet Hill Recreation Area, Ely, Nevada;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4855314667; Occurrence Remarks: DonΓÇÖt ask how it got in the truck.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4863383512; Occurrence Remarks: Alive on road;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4867625077; Occurrence Remarks: About 7 or 8 inches long with only 1 or 2 buttons. Barely able to rattle.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4867834332; Occurrence Remarks: Dead on road DOR :-(;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4872549170; Occurrence Remarks: Coaxed out with a snake hook so I could actually get a photo;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4901159589; Occurrence Remarks: The snake rattled when surprised;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4875253070; Occurrence Remarks: coincidentally in rattlesnake canyon!;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4892012379; Occurrence Remarks: Moved from roadway;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4891984089; Occurrence Remarks: saw this guy on a trip back home;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 4891635199; Occurrence Remarks: Campground resident (?);; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4892001540; Occurrence Remarks: Found on the trail near Bassi Falls in CA. Anyone know the subspecies?;; Coordinate Uncertainty in Meters: 933.00000.

GBIFID: 4891756584; Occurrence Remarks: Crappy photo as I was trying to hustle the snake out of the road before it got hit. Snake had pale markings and a dark band at the base of the rattle. It was small: not much more than a foot long.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2236254148; Occurrence Remarks: The third rattler we encountered! Its spring for sure.;; Coordinate Uncertainty in Meters: 102.00000.

GBIFID: 4901598622; Occurrence Remarks: Found cryptically basking in a bunch of tumbleweeds suspended above a small agricultural irrigation ditch;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 4901509892; Occurrence Remarks: Nice stripe on rear portion found DOR;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 4901260776; Occurrence Remarks: 2 of four sheds, also saw one snake.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4903979339; Occurrence Remarks: S/he let me know s/he was there with the rattle;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 891135815; Occurrence Remarks: Snake rattle;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2237461901; Occurrence Remarks: From a trip years ago. ItÆs so dusty I canÆt tell what kind of rattlesnake it is. Location is approximate;; Coordinate Uncertainty in Meters: 4621.00000.

GBIFID: 4908498275; Occurrence Remarks: Moved out of the road for a more respectful resting place.;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 2237491015; Occurrence Remarks: Wish they werenΓÇÖt so dangerous. It was a pretty snake.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 2237510069; Occurrence Remarks: Nearly ran over this beauty.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4911092730; Occurrence Remarks: Walking back from a little hike, several people stepped right over this rattler who was nestled in the tree roots. He looked to be resting and sleeping. It was very hot that day, part of the heat dome. Assume he was looking for shade and water. Once we noticed him, we backed up. He didnΓÇÖt move. DidnΓÇÖt coil or anything. And then suddenly he just took off into the bushes. Now trying to be a little more aware.;; Coordinate Uncertainty in Meters: 296.00000.

GBIFID: 4910888931; Occurrence Remarks: Found DOR in Northern California;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4911060700; Occurrence Remarks: Location - Moonshine Wash (in a sagebrush island in the middle of a wide section of the Wash along entry to canyoneering loop route); One individual spotted; noticed snake after finding a still warm, dead lizard in the middle of the trail (presumably, the snakeÆs prey)!;; Coordinate Uncertainty in Meters: 31326.00000.

GBIFID: 4919739786; Occurrence Remarks: found on road dead, hit by car sometime the night before, rattle was missing. 39 1/2 long and 5 around.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4936265869; Occurrence Remarks: I heard the snake moving in the grass. It slowly went under a nearby log, you can see the rattle in second pic. The snake never used its rattle.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4936849487; Occurrence Remarks: I saw this big rock and though ΓÇ£that shady area underneath looks like a cozy spot for a snakeΓÇ¥ and sure enough, when I walk up to it, this girl is sitting underneath! Sooo docile! DidnΓÇÖt rattle, and slithered back up under the rock when I got too close ≡ƒñú Not aggressive at all.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4936190330; Occurrence Remarks: Unfortunate encounter with dying individual. Appeared to have a broken neck and was bleeding out of mouth, with only posterior half of body moving.;; Coordinate Uncertainty in Meters: 1404.00000.

GBIFID: 4936673829; Occurrence Remarks: Interrupted a moment between these two;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4945539465; Occurrence Remarks: Seen dying in the middle of the trail;; Coordinate Uncertainty in Meters: 4873.00000.

GBIFID: 4946096200; Occurrence Remarks: CouldnΓÇÖt quite urge this one off the road;; Coordinate Uncertainty in Meters: 2006.00000.

GBIFID: 4946541966; Occurrence Remarks: Same as https://www.inaturalist.org/observations/240403758;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4946113825; Occurrence Remarks: Wanted nothing to do with me! Disappeared under the boulder in 3 seconds. My last rattlesnake encounter was the same. Rattlesnakes have showed the LEAST aggression towards me out of all snakes here. Rattled a TON though, extremely loud!;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 4950250735; Occurrence Remarks: Very flattened sadly. Right where the 1 lane stop was for the road construction.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4950354742; Occurrence Remarks: DOR dead on road;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 4949906735; Occurrence Remarks: Missed the hatchings ΓÇ£seasonΓÇ¥ but found this stunner on top of a boulder! I found the den site they are using here and it was filled with sheds from adults and babies!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 2239036483; Occurrence Remarks: run over by a truck while basking on the side of the road;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 4950429637; Occurrence Remarks: The first one IΓÇÖve seen here! Nearly stepped on it, didnΓÇÖt expect it to be basking in the middle of the road; it was pretty hot out.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 4952610821; Occurrence Remarks: New spot! Weehooo!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4954437678; Occurrence Remarks: Found this dead in my driveway. Appears to be a southern pacific rattlesnake but Seek is identifying it as a western black tailed rattlesnake (crotalus molossus). I am also curious about what may have killed it and why the sides of its body appears to have a dip and then a longitudinal ridge.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4974204882; Occurrence Remarks: Was hiding under a couple of extra wooden fence posts in dry grassy area in western El Dorado Co. Eventually crawled down into what looked like a Ground Squirrel burrow.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4973985924; Occurrence Remarks: Very large Rattlesnake skin found among some rocks and brush near the El Dorado Trail in western El Dorado County. Estimated length was a good 4+ feet; probably a large female. Obsv #7,054;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4976511240; Occurrence Remarks: Another stunner. Found at the base of a tree where it buzzed me before crawling into an area with lots of small sticks Millard County;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 4976564586; Occurrence Remarks: Gorgeous lute, the nicest one IÆve seen. Found with just the tail sticking out of a bush overhanging a road shoulder Millard County;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 1584399767; Occurrence Remarks: -half of body, roadkill;; Coordinate Uncertainty in Meters: 3000.00000.

GBIFID: 4978582541; Occurrence Remarks: Ooh! DidnΓÇÖt expect to be flipping snake in November!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4978387731; Occurrence Remarks: Funky looking patch on top of his head. Much more lethargic than the other snakes, but perked up upon meeting Mr. Twig. Last snake I saw.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 4978650060; Occurrence Remarks: Another one! Love the babies to death!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 891023860; Occurrence Remarks: Baby rattlesnake at Phantom Spires;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 5006702426; Occurrence Remarks: Historical Observation.;; Coordinate Uncertainty in Meters: 3670.00000.

GBIFID: 5076904007; Occurrence Remarks: Location is approximate.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5077119686; Occurrence Remarks: First time handling a rattlesnake. Will only even handle small ones like this that canΓÇÖt strike past the glove line ≡ƒæì Even so, absolute doll, didnΓÇÖt even strike once!;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5087475496; Occurrence Remarks: Several sheds seen around small cave - also heard one rattle at me from within the rocks;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5104740565; Occurrence Remarks: Numbers 8 and 9. One of them is already on iNat.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5104633731; Occurrence Remarks: Lovebirds, all snuggled up;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5108099124; Occurrence Remarks: Either multiple snakes or it kept returning;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 2265871213; Occurrence Remarks: Alive on road (AOR);; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5134577842; Occurrence Remarks: Posting on behalf of Matt Heron;; Coordinate Uncertainty in Meters: 204.00000.

GBIFID: 5133737465; Occurrence Remarks: For the coiled one;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5133613527; Occurrence Remarks: For the stretched out snake.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5134902996; Occurrence Remarks: https://youtu.be/9vC9VTykdsk;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5140465268; Occurrence Remarks: Wee little guy under some tarp. DidnΓÇÖt even strike.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5154943023; Occurrence Remarks: Hiked a dor ≡ƒÿ₧;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 5153890859; Occurrence Remarks: NotΓÇª quite what IΓÇÖm looking for. Nice gold colors on this guy though.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5167394648; Occurrence Remarks: In rock crevice in a high desert/open PJ woodland context.;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 5167833825; Occurrence Remarks: Two seen on our hike to Davis Reservoir and back today. Both basking in the road.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 5168380137; Occurrence Remarks: on side of trail. gave me a warning.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5167279563; Occurrence Remarks: Short hike with a very good non herper friend was quite goodΓÇª beginners luck;; Coordinate Uncertainty in Meters: 94.00000.

GBIFID: 2283251638; Occurrence Remarks: I almost stepped on this guy when he was out of his hole but I walked away immediately when we made eye contact. I got brave enough to come back from the other direction a few minutes later and caught part him going back into his hole in this picture. He looked like he had recently eaten and he was pretty big in circumference. Had to be at least a few years old.;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5177326204; Occurrence Remarks: Went night hiking due to 100 degree temps. No snakes. Decided to flip random rock and this guy was under it for whatever reason. Weird.;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 5176709914; Occurrence Remarks: juvenile Western Rattlesnake??? is that a yellow button at the tail (see ventral photo)?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5177311918; Occurrence Remarks: Diamondback rattlesnake observed at neighborÆs front door, Utahraptor State Park.;; Coordinate Uncertainty in Meters: 43.00000.

GBIFID: 5187606484; Occurrence Remarks: Unfortunately this poor guy was deceased when I found it, but I saw a really big rattlesnake. IΓÇÖm not too keen on snake IDs, but all I know for certain is this is definitely some type of rattlesnake.;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 2294509659; Occurrence Remarks: I know this is a rattlesnake; however, look at the strange marking on it. Is this normal? We live in an area of rattlers, and this is a first for us.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5198371875; Occurrence Remarks: Observed in the foothills of Northern California;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 5199099837; Occurrence Remarks: Olmstead Loop Trail, CA;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 5206592532; Occurrence Remarks: Found in the rocky cliffs sunning;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5216414246; Occurrence Remarks: Dor;; Coordinate Uncertainty in Meters: 609.00000.

GBIFID: 5217312718; Occurrence Remarks: Same as observed by jacob555;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5216273679; Occurrence Remarks: Didnt rattle, didnt move;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 5230813663; Occurrence Remarks: Found bathing in the sun next to a large bolder, at the very edge of the waterfall/swimming hole, on Vichy Springs Waterfall Trail. I nearly stepped on it as it was well camouflaged. As I backed away, it retreated under the bolder and out onto the smaller rocks in the photos.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 5231630823; Occurrence Remarks: Observation for the prey item that was ejected: https://www.inaturalist.org/observations/297515416;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5238401406; Occurrence Remarks: Very pretty. All the one up here are quite light colored;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 5238439624; Occurrence Remarks: Thank you Mr./Mrs. Rattler for warning me you were there instead of just striking;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2350405079; Occurrence Remarks: Great Basin Rattlesnake, subspecies of Western rattlesnake;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1265902727; Occurrence Remarks: My second close encounter of the year.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2422990056; Occurrence Remarks: 1:00pm right next to hiking trail;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2422987782; Occurrence Remarks: Found rattlesnake while working in my garden;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 891174881; Occurrence Remarks: Rattlesnake on the trail to Auburn Quarry;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 2423059491; Occurrence Remarks: Recently hit :(;; Coordinate Uncertainty in Meters: 395.00000.

GBIFID: 2423109738; Occurrence Remarks: Saw this little 20ΓÇ¥ rattle snake by the Galena track and field sadly it was run over by a car after I left;; Coordinate Uncertainty in Meters: 45.00000.

GBIFID: 2423110800; Occurrence Remarks: A group of kids threw a bunch of rocks at this poor animal and it was bleeding out so I put it out of its misery. Truly a beautiful snake;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 1269583137; Occurrence Remarks: We found this 18-24 inch rattler crossing the trail in front of us.;; Coordinate Uncertainty in Meters: 51.00000.

GBIFID: 2423248053; Occurrence Remarks: Its dead. We keep finding them on our ranch. Yes, its their territory, but we cant risk the horses.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1270054751; Occurrence Remarks: Sadly it came into the ranch alive today but the landowner killed it because it was next to the house.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 2557782162; Occurrence Remarks: The only Rattlesnake in this neck of Great Basin. I have found Great Basin Rattlesnakes to be the most docile of all the Rattlesnakes and pit vipers Ive shared company with. I camped only a few feet away, and as expected all was well for the snake and everybody else.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2557805636; Occurrence Remarks: Hiking into the evening, in the PIne Nut Mountains of Nevada... After moving onto a dirt road, saw this beauty. The most docile species of rattlesnakes I have been around. Headlamp was off, and heard a rattle as I put my right foot down right next to it. headlamp stayed on the rest of the hike.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2563545493; Occurrence Remarks: Pine Nut Mountains, NV After encouraging this Great Basin Rattlesnake off of a frequently traveled BLM road, was able to get a few photos before the snake departed. Seldom getting very upset, this species is more on the quiet side, yet this snake wasnt too happy about me moving it along to safety.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 891732145; Occurrence Remarks: Rattlesnake at Lovers Leap;; Coordinate Uncertainty in Meters: 127.00000.

GBIFID: 3067658859; Occurrence Remarks: Young, small rattlesnake on paved road near Knickerbocker road;; Coordinate Uncertainty in Meters: 787.00000.

GBIFID: 2609134098; Occurrence Remarks: Almost caught this little guy yesterday. Nearly stepped on him, he was young and only had a button so he couldnΓÇÖt rattle. Real placid little guy.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 2611303021; Occurrence Remarks: .We couldnt tell if the snake was alive or dead.;; Coordinate Uncertainty in Meters: 11815.00000.

GBIFID: 891759664; Occurrence Remarks: sunning itself in a pile of granite rocks;; Coordinate Uncertainty in Meters: 51.00000.

GBIFID: 2626539516; Occurrence Remarks: road kill;; Coordinate Uncertainty in Meters: 3372.00000.

GBIFID: 2626573337; Occurrence Remarks: Almost stepped on him while running.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 2634395709; Occurrence Remarks: This little guy almost bit my cousin so I caught him and moved him with a catching bag.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 2803153493; Occurrence Remarks: About 12 inches. Only 2 rings on the rattle.;; Coordinate Uncertainty in Meters: 26.00000.

GBIFID: 2802743999; Occurrence Remarks: This big guy almost bit my friends hand. ItΓÇÖs probably the biggest snake so far this year. This snake was so fun to catch.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3031952818; Occurrence Remarks: Rattlesnake- baby;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 2851229257; Occurrence Remarks: Colorado National Monument visitor center. Waiting to get relocated by NPS staff.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 2864598125; Occurrence Remarks: I caught this little guy late one evening and held him over night because letting him go that late I was worried he would get killed and eaten and the release wouldnΓÇÖt be safe.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 1584402271; Occurrence Remarks: Found 5/4/2017 on fort churchill rd about 4 miles in from hwy 50 at 6:26pm. 75 degrees and sunny;; Coordinate Uncertainty in Meters: 2752.00000.

GBIFID: 4946492412; Occurrence Remarks: My secret den site. Have seen up to 25+ rattlers in this crack, and my friends have reported more;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 3039444320; Occurrence Remarks: It was with many others in its hibernation site, we also found a site that had only juvenile snakes hibernating there;; Coordinate Uncertainty in Meters: 28210.00000.

GBIFID: 911495996; Occurrence Remarks: Saw this rattlesnake at my house;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3068018963; Occurrence Remarks: Photo credit to Conley Goodman.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3068047301; Occurrence Remarks: Location verified on satellite view.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3079904531; Occurrence Remarks: Coiled under deck bench.. Both surprised when removed cover. Healthy male, @ 6-8 yrs old, about 2.5 to 3 feet;; Coordinate Uncertainty in Meters: 1589.00000.

GBIFID: 3079612503; Occurrence Remarks: On the move trying to find new hiding place. Male @ 6-8 yrs old, 2.5 to 3 feet. Last photo in bucket to be relocated.;; Coordinate Uncertainty in Meters: 1589.00000.

GBIFID: 3090745569; Occurrence Remarks: Youngin;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3097276288; Occurrence Remarks: I think it could be same individual I saw earlier today because itΓÇÖs about the same size and in the same general area;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3112939635; Occurrence Remarks: rattlesnake;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3112895660; Occurrence Remarks: Rattle snake. Near squirrel holes. Snake squirrel arms race of anti toxin. Each time a rattlesnake sheds its skin it gets another rattle. So correlated with age.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3112671709; Occurrence Remarks: Uninvited pool party guest I tried to save its life, was unsuccessful ≡ƒÿí;; Coordinate Uncertainty in Meters: 97.00000.

GBIFID: 3113701599; Occurrence Remarks: Under rock;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 3117814886; Occurrence Remarks: It was in pursuit of a squirrel (you can see in the shadow). This is a screenshot of a video;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 3118276185; Occurrence Remarks: I think the thickness of the black band on the end of the tail indicates the great basin subspecies, but Im a novice at this whole snake thing;; Coordinate Uncertainty in Meters: 13539.00000.

GBIFID: 3118187457; Occurrence Remarks: Fresh roadkill <12hrs old;; Coordinate Uncertainty in Meters: 77.00000.

GBIFID: 1024198153; Occurrence Remarks: Had been run over on dirt road, maybe earlier that day;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3302533907; Occurrence Remarks: rattler w a dead(?) skink;; Coordinate Uncertainty in Meters: 7537.00000.

GBIFID: 891082200; Occurrence Remarks: This snake was dead in the road on the way to lake Sonoma. It was about 2.5 feet long and had circular spots up and down its back. Due to the area I found it in and the coloring of the stripes on its tail(light and dark brown) I was able to identify it as a northern pacific rattlesnake;; Coordinate Uncertainty in Meters: 683.00000.

GBIFID: 3302345150; Occurrence Remarks: Two AOR NorPAcs, 1 AOR western toad, one guy looking for mtn lions.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 3307238413; Occurrence Remarks: You canΓÇÖt tell in the photos, but this snake was actually a very nice shade of green.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1677285670; Occurrence Remarks: Rattlesnake eating a ground squirrel;; Coordinate Uncertainty in Meters: 13442.00000.

GBIFID: 3314466885; Occurrence Remarks: Big. Maybe 24 plus inches, about a 1 inch rattle. More striped pattern near tail. Could this be the northern Pacific rattlesnake? C. oreganus oreganus?;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3325687232; Occurrence Remarks: Adult found alive on road;; Coordinate Uncertainty in Meters: 28181.00000.

GBIFID: 3327706647; Occurrence Remarks: Nearby stepped on my friend here. Hissed and that was it.;; Coordinate Uncertainty in Meters: 234.00000.

GBIFID: 3327835280; Occurrence Remarks: What would you call this pattern?;; Coordinate Uncertainty in Meters: 866.00000.

GBIFID: 3330889401; Occurrence Remarks: Found Alive On road;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 3330925491; Occurrence Remarks: AOR;; Coordinate Uncertainty in Meters: 28121.00000.

GBIFID: 3335231398; Occurrence Remarks: AOR alive on road;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 3335582470; Occurrence Remarks: AOR alive on road found by Ben roberts;; Coordinate Uncertainty in Meters: 346.00000.

GBIFID: 3344069032; Occurrence Remarks: Found and photographed by James Rice. Note the biofluorescence.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 1806332669; Occurrence Remarks: Colorado National Monument. Hit on road, yet still alive and very angry. B&W photo.;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 3384895426; Occurrence Remarks: Young rattlesnake. Mouth open, looked alive but was dead on side of trail.;; Coordinate Uncertainty in Meters: 2053.00000.

GBIFID: 3384982611; Occurrence Remarks: Baker elementary school;; Coordinate Uncertainty in Meters: 25.00000.

Nevada, California: 39.216367, -121.217774: : 4/4/2026: katefavetti: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 3398906458; Occurrence Remarks: A few meters off the road. Another was dead in the road. Possible hibernaculum nearby? Weather had been cold and rainy the previous week, but conditions that day were approximately 60 F and mostly sunny.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3398837409; Occurrence Remarks: Found in middle of road.;; Coordinate Uncertainty in Meters: 100.00000.

Placer, California: 38.955577, -121.038431: : 8/19/2025: Mason: 19 Aug 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Placer, California: 39.308639, -120.667522: : 8/24/2025: rafeememon: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: dor

Occurrence Remarks: Freshly born juveniles. 4-5 snakes. Only got a good look at 2, and you can see this one yawn; Coordinate Uncertainty in Meters: 28210.00000.

Occurrence Remarks: The golf club hook is goatedΓÇª and late August makes any one appreciate even the simplest of snakes; Coordinate Uncertainty in Meters: 16.00000.

Nevada, California: 39.274472, -121.103036: : 8/31/2025: Scott Young: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

El Dorado, California: 38.983576, -120.356297: : 7/17/2026: munozbird: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 28181.00000.

Placer, California: 39.064546, -120.415579: : 7/14/2026: planetboom: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

El Dorado, California: 38.772267, -120.888367: : 10/4/2025: ghwada: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Lake, California: 38.873692, -122.432403: : 7/17/2026: benamann: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Napa, California: 38.844437, -122.37735: : 7/21/2026: benamann: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found near public bathroom.; Coordinate Uncertainty in Meters: 5.00000.

El Dorado, California: 38.767333, -120.88548: : 7/12/2026: Lcollingsparker: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Butte, California: 39.760805, -121.800155: : 3/19/2026: Caleb Hute: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Occurrence Remarks: Hit by the car in front, was still alive but mortally injured; Coordinate Uncertainty in Meters: 28000.00000.

Occurrence Remarks: Occurrence Remarks: Possibly the most defensive lutosus I have ever encountered; Coordinate Uncertainty in Meters: 28000.00000.

Occurrence Remarks: Occurrence Remarks: Found deceased on the road without a head or rattle :(; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: Rattle snake; Coordinate Uncertainty in Meters: 44.00000.

Tehama, California: 39.953344, -121.791773: : 6/26/2024: spadefeet: 26 Jun 2024 ; Coordinate Uncertainty in Meters: 28030.00000.

Occurrence Remarks: This was a sad freak accident - was cutting brush for habitat restoration work, unfortunately caught a c. oreganus in the cross fire; Coordinate Uncertainty in Meters: 28030.00000.

Washoe, Nevada: 39.65538, -119.371667: : 4/24/2026: eva_laiti: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859515093; Occurrence Remarks: Adult male;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3859576055; Occurrence Remarks: What a cutie;; Coordinate Uncertainty in Meters: 12.00000.

Tehama, California: 40.109645, -122.021229: : 4/14/2026: Scott Hardage: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Butte, California: 39.768799, -121.76445: : 5/5/2026: Richard Funes: 5 May 2026 ; Coordinate Uncertainty in Meters: 88.00000.

Mendocino, California: 39.670502, -123.609579: : 5/22/2026: Skyla O.: 22 May 2026 ; Coordinate Uncertainty in Meters: 10105.00000.

Mendocino, California: 39.747708, -123.6344: : 5/14/2026: Skyla O.: 14 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mendocino, California: 39.81843, -122.978972: : 5/23/2026: Steven Clinton: 23 May 2026 ; Coordinate Uncertainty in Meters: 417.00000.

Churchill, Nevada: 39.808097, -118.221588: : 5/25/2026: Sean Clark: 25 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Utah, Utah: 40.297928, -112.12748: : 4/7/2026: Andriel Kofoed: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Occurrence Remarks: This guy nearly got me!; Coordinate Uncertainty in Meters: 118.00000.

Carbon, Utah: 39.62072, -110.967658: : 4/11/2026: Benjamin LaFrance: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Humboldt, California: 40.172713, -124.230958: : 4/25/2026: Erin Epidote Enfield: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Tehama, California: 40.291618, -122.180058: : 11/15/2025: Tony Doty: 15 Nov 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Butte, California: 39.692037, -121.74298: : 11/14/2025: ghwada: 14 Nov 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Snake in grass; Coordinate Uncertainty in Meters: 14754.00000.

Washoe, Nevada: 40.26996, -119.735249: : 5/18/2026: May Flores: 18 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Butte, California: 39.786257, -121.741527: : 4/18/2026: emackinnon: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 641.00000.

Occurrence Remarks: Best pic i could get, it was fully out, going later to see if i can get s good pic; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Very young. Notice Douglas fir cone next to it for scale; Coordinate Uncertainty in Meters: 9.00000.

Mendocino, California: 39.745632, -123.636315: : 5/22/2026: maia-nthemum: 22 May 2026 ; Coordinate Uncertainty in Meters: 42.00000.

Tooele, Utah: 40.253637, -113.97728: : 5/24/2026: Emily Card: 24 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Wasatch, Utah: 40.422675, -111.388472: : 5/25/2026: deeperthought42: 25 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Number 6; Coordinate Uncertainty in Meters: 2433.00000.

Washoe, Nevada: 39.776058, -119.90213: : 5/29/2026: scottchadwick: 29 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4134027903; Occurrence Remarks: Remains found under a rock. Due to location probably a safe bet to say C. oreganus lutosus.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4116416086; Occurrence Remarks: About 70f. Partially cloudy. Pic is of its rock;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 3881402841; Occurrence Remarks: While road cruising;; Coordinate Uncertainty in Meters: 194.00000.

Occurrence Remarks: Right in the middle of the trail ≡ƒÿ¼≡ƒÿ¼≡ƒÿ¼; Coordinate Uncertainty in Meters: 0.11000.

Mendocino, California: 39.906649, -123.751917: : 6/7/2025: Sheldon Schultz: 7 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Tehama, California: 40.274993, -122.194674: : 6/25/2025: Ben Callicott: 25 Jun 2025 ; Coordinate Uncertainty in Meters: 1297.00000.

Tehama, California: 40.164956, -121.586556: : 9/28/2025: karmstrong10: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Trinity, California: 40.386528, -123.200088: : 5/9/2026: jandrewsal: 9 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Butte, California: 39.923426, -121.593637: : 4/16/2026: rhmeier: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Wasatch, Utah: 40.366728, -111.554165: : 7/3/2025: glp_watching: 3 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Butte, California: 39.879521, -121.693537: : 4/8/2026: kwgeiger: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 6526.00000.

Occurrence Remarks: On the edge of a cliff, moved to a controlled area for pictures, most scenic rattlesnake find; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Under a rock on a cliff; Coordinate Uncertainty in Meters: 189.00000.

Washoe, Nevada: 39.490573, -119.900593: : 5/2/2026: Stevie Steele: 2 May 2026 ; Coordinate Uncertainty in Meters: 357.00000.

Butte, California: 39.819338, -121.844523: : 5/3/2026: Lucia VanErt: 3 May 2026 ; Coordinate Uncertainty in Meters: 287.00000.

Butte, California: 39.512583, -121.676586: : 5/6/2026: karmstrong10: 6 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Lassen, California: 39.842322, -120.085153: : 5/2/2026: brock: 2 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Humboldt, California: 40.160408, -124.21367: : 5/2/2026: alexlerch: 2 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Humboldt, California: 40.160258, -124.213845: : 5/2/2026: Joshua Zupan: 2 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: 2nd for the year; Coordinate Uncertainty in Meters: 0.11000.

Utah, Utah: 40.297752, -112.127921: : 5/9/2026: Andriel Kofoed: 9 May 2026 ; Coordinate Uncertainty in Meters: 106.00000.

Occurrence Remarks: Only about 10-12 inches long, probably a juvenile. It started coiling when I approached rather than slithering away, then resumed slowly moving away when I backed up. Visually similar to one of the sample photos of a North American Racer, and to one of the sample photos of a gopher snake, but seems closest to a Western Rattlesnake. Theres a small area of black coloration on the end of its tail that could be the start of its rattle. Found on the Bonneville Shoreline trail in the foothills of the Wasatch mountain range.; Coordinate Uncertainty in Meters: 5.00000.

Washoe, Nevada: 39.557081, -119.901316: : 5/11/2026: Spencer Hurt: 11 May 2026 ; Coordinate Uncertainty in Meters: 28.00000.

Butte, California: 39.761953, -121.792931: : 5/2/2026: Drew: 2 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Tehama, California: 39.816399, -122.372086: : 3/21/2026: teggert: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 173.00000.

Occurrence Remarks: Small snake (rattlesnake?); Coordinate Uncertainty in Meters: 20.00000.

Shasta, California: 40.466408, -122.119772: : 5/30/2025: Price Court: 30 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Butte, California: 39.765764, -121.797553: : 9/21/2025: luluzoo: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Tehama, California: 40.169188, -121.585725: : 9/28/2025: reelander: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 271.00000.

Utah, Utah: 40.328512, -111.62217: : 5/11/2026: sammydstecher: 11 May 2026 ; Coordinate Uncertainty in Meters: 446.00000.

Butte, California: 39.735989, -121.763929: : 5/14/2026: Rich Reiner, Ph.D.: 14 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Churchill, Nevada: 39.977841, -118.4999: : 5/13/2026: redrockrobin: 13 May 2026 ; Coordinate Uncertainty in Meters: 3153.00000.

Butte, California: 39.772591, -121.780232: : 5/16/2026: dlteeter: 16 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Butte, California: 39.773996, -121.780167: : 5/16/2026: sakiminki: 16 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Butte, California: 39.774005, -121.780312: : 5/16/2026: donovanbg: 16 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Trinity, California: 40.091553, -123.516395: : 5/17/2026: brock: 17 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Washoe, Nevada: 40.269913, -119.735328: : 5/18/2026: amiramorrow: 18 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Humboldt, California: 40.198733, -124.277554: : 3/18/2026: ecophile: 18 Mar 2026 ; Coordinate Uncertainty in Meters: 1854.00000.

Occurrence Remarks: Very difficult to see in picture, but it rattled at us and I saw the spade-shaped head. Could not get a good enough look at it to determine species, anyone know what snake would be common to find on feather falls trail?; Coordinate Uncertainty in Meters: 1823.00000.

Butte, California: 39.784944, -121.740099: : 3/22/2026: sburnworth: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 2155.00000.

Occurrence Remarks: Small snake; Coordinate Uncertainty in Meters: 6.00000.

Butte, California: 39.774672, -121.776383: : 3/24/2026: Baylee Reagen: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Butte, California: 39.598547, -121.577915: : 3/22/2026: joannavd: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 1929.00000.

Occurrence Remarks: Looks visually full like it recently ate, it came up off the hillside down below the road where thousands of mice live in the foothills of the mountains .; Coordinate Uncertainty in Meters: 3280.00000.

Washoe, Nevada: 39.596554, -119.92283: : 4/4/2026: ybmoose: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 328.00000.

Butte, California: 39.775817, -121.820313: : 4/6/2026: Jordan Collins: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Tehama, California: 39.927653, -122.179156: : 7/15/2025: princessw: 15 Jul 2025 ; Coordinate Uncertainty in Meters: 3673.00000.

Utah, Utah: 40.265392, -111.610591: : 11/8/2025: forrest-crawford: 8 Nov 2025 ; Coordinate Uncertainty in Meters: 240.00000.

Sierra, California: 39.593883, -120.6716: : 6/2/2026: Kaleb Goff: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Uintah, Utah: 40.447197, -109.28882: : 6/3/2026: Deborah Bird: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

White Pine, Nevada: 39.427055, -114.959367: : 6/3/2026: jdanielson: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Baby lutosus crossing the road.; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: Big what I assume female crossing road. Saved from pickup hauling tail down the road. Not very thrilled.; Coordinate Uncertainty in Meters: 15.00000.

Lassen, California: 39.897565, -120.01481: : 6/4/2026: John Taylor, M.S.: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 28030.00000.

Butte, California: 39.717006, -121.720815: : 6/5/2026: schnack04: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 61.00000.

Utah, Utah: 40.244958, -111.624397: : 6/5/2026: lady_anguish: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Tooele, Utah: 40.474042, -112.619042: : 6/6/2026: Sierra Hastings: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Sanpete, Utah: 39.610532, -111.617676: : 6/8/2026: james-petersen: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 88.00000.

Butte, California: 39.771355, -121.766687: : 6/4/2026: Aiden Schainker: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Churchill, Nevada: 39.74048, -118.837326: : 6/12/2026: James M. Maley: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 28060.00000.

Churchill, Nevada: 39.769483, -118.832017: : 6/17/2026: James M. Maley: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 28060.00000.

Churchill, Nevada: 39.683418, -118.962484: : 6/18/2026: James M. Maley: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 28060.00000.

Occurrence Remarks: Baby rattlesnake

Trinity, California: 40.46994, -123.173886: : 6/19/2026: jandrewsal: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 24.00000.

Trinity, California: 40.330238, -123.229303: : 6/18/2026: ryank94: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Mendocino, California: 39.700008, -123.357475: : 6/22/2026: arjdheer: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Butte, California: 39.579024, -121.436226: : 6/22/2026: Patricia Wells: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 283.00000.

Humboldt, California: 40.196705, -124.299462: : 7/12/2026: catagonia: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 2991.00000.

Plumas, California: 40.063806, -120.824158: : 5/25/2026: Joseph McDonough: 25 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Tehama, California: 40.196392, -122.225738: : 7/1/2026: heatherlee42: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Butte, California: 39.776169, -121.753792: : 9/30/2025: Cooper: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3455449805; Occurrence Remarks: Freshly born litter from a gravid female IÆd been checking on. CouldnÆt see exactly how many were in there, but 4 individuals were seen.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3455476656; Occurrence Remarks: Awful photo. Not positive on the ID?;; Coordinate Uncertainty in Meters: 1829.00000.

GBIFID: 3705433557; Occurrence Remarks: Seems early for rattlesnakes, but its been a warm February;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3772671174; Occurrence Remarks: What a cutie. He was catching some late afternoon sun curled up exactly like this when I walked up.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3772923250; Occurrence Remarks: Incinerated in wildfire;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 3773604878; Occurrence Remarks: Baby rattlesnake right next to the trail up Dry Canyon. Had the most pathetic little rattle youÆve ever heard.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3784639199; Occurrence Remarks: DOR juvenile;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3802311651; Occurrence Remarks: Road cruised;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 3802367736; Occurrence Remarks: Walked up. Was coiled in ambush position, at the top of a dry wash burm, but started to move before I could get a picture.;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 3858437398; Occurrence Remarks: Scary scary that my dog found it before me rattling on the lost coast trail;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859753566; Occurrence Remarks: This snake was reported to UDWR as a DOR. The individual who took the picture purchased a UDWR Reptiles and Amphibians permit and retained the snake as a salvage specimen.;; Coordinate Uncertainty in Meters: 402.00000.

GBIFID: 3860593201; Occurrence Remarks: 3rd picture is where I saw it getting some shade, it immediately backed under so I fished it out to get a better look. Maybe stressed the poor guy out a little.;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 3860329272; Occurrence Remarks: Getting shade;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 3874078152; Occurrence Remarks: It was getting dark, and it looked like a rattlesnake a the time, I thought it was a rattle at the end (second photo)... But could have been an injured tail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3881479609; Occurrence Remarks: Finally found a live rattlesnake!! I narrowly avoided hitting this beautiful snake with my car as it was crossing the road. The highway was extremely empty in the middle of the night, so I was able to turn the car around, pull over, and get out to take photos from a safe distance as the snake finished crossing the road. It paid zero attention to me, and I estimate it was about 3 feet long.;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 3881377722; Occurrence Remarks: This chunker was poking around on the Whitehouse deck and eventually entered through the rodent hole in the door. The hunt is on!;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3881614610; Occurrence Remarks: Curled up in a tree root next to a stream at night.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3892610307; Occurrence Remarks: Overcast. 75f.;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 3903350659; Occurrence Remarks: Watched the guy behind me hit it :(;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3903569311; Occurrence Remarks: Road cruised;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3903274292; Occurrence Remarks: Thermoregulating on road;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 1883474996; Occurrence Remarks: large female rattlesnake that lived under the barn for years;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 1883523882; Occurrence Remarks: a juvenile Northern Pacific Rattler;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 5229986305; Occurrence Remarks: Dont know what type;; Coordinate Uncertainty in Meters: 704.00000.

GBIFID: 1890683055; Occurrence Remarks: I took a black light to search for scorpions. Come to find out, coiled snakes may initially look like cow pies in black lights. I also learned that if you try to take a picture with a cellphone while also using it as a flashlight, the light turns off, plunging the holder into darkness; in this case, coincidentally, at the same moment that a nearby venomous snake starts rattling.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1890725461; Occurrence Remarks: A rattler eating a bird at a friends house.;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 4111594013; Occurrence Remarks: When visiting Hidden Cave and Grimes Point, we passed a couple people as we walked up to Picnic Cave. They said there was a rattle snake near the entrance. We got a bit closer and heard it rattle its tail. I never saw more than the tail tip, as we didnt approach too close.;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 4121323220; Occurrence Remarks: I almost stepped on this guy as he was sunning on a rock, and then he rattled and curled up underneath a sagebrush.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4127196292; Occurrence Remarks: Between 2-3 feet long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4127453651; Occurrence Remarks: Old observation; rained early that afternoon;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 4153871916; Occurrence Remarks: Road cruised AOR;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4153627929; Occurrence Remarks: Road cruised DOR Recently hit; right eye likely filled with blood.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4153521038; Occurrence Remarks: Great Basin Rattlesnake crossed the trail as we were watching fireworks and we had to move our stuff before I could get a better photo and more light;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 4153858823; Occurrence Remarks: Rattlesnake seen in a canyon west of the Green River.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1920818110; Occurrence Remarks: A juvenile with 1 (or 2?) rattle scale;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4162497776; Occurrence Remarks: Juvenile, seen checking me out from under a rock as I hiked by;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4400241358; Occurrence Remarks: Cross neighborhood road near canyon mouth, helped him across. Hopefully no one kills him;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1933560460; Occurrence Remarks: White Rock Campground, Shasta-Trinity National Forest Trinity County, California;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 4400046724; Occurrence Remarks: My dad kept insisting it was a gopher snake despite me pointing out the distinct pattern and the rattle on its tail. He didnt believe me until he got within 3 feet of it and it rattled at him. Animal control was able to come and safely remove it.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 4431200302; Occurrence Remarks: I witnessed the immediate aftermath of an unknown animal preying on this rattlesnake. The kill occurred directly next to a mountain lion predation site of a mule deer.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4431265376; Occurrence Remarks: not sure if this is the exact location but it was right near the water, quite small/scary;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 891022435; Occurrence Remarks: Not sure of the subspecies;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1990628540; Occurrence Remarks: I assume it was a rattlesnake. Why else cut off the tail?;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4525344686; Occurrence Remarks: This snake was in this burnt out root hole (Dixie Fire) for eight days to molt and then left. Actually, the first night, it appeared to have left for a while but returned by the next day and remained for the rest of the time. My dog appeared smart enough to leave it alone the entire time. It shed its skin (pictured) and left permanently.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4535690818; Occurrence Remarks: Rattlesnake found at BCEP;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4597195607; Occurrence Remarks: Observed at Upper Bidwell Park along rocky trail near Big Chico Creek. Very long individual, at least 5ft/1.5m. I was surprised to find this snake, as there were many loud people on the trail and creek bank.;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 4606699109; Occurrence Remarks: Observed while road cruising a rural road.;; Coordinate Uncertainty in Meters: 6798.00000.

GBIFID: 4847057311; Occurrence Remarks: Baby Rattlesnake found at BCEP;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4852025346; Occurrence Remarks: A real beauty, and very polite;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 4863729307; Occurrence Remarks: grba;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 4875013212; Occurrence Remarks: Juvenile. Note single button on tail and compare size w 1.5 live-oak leaf to left of head.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4891638123; Occurrence Remarks: Spotted this guy with a friend near Ballardini Ranch in Reno, NV. Believe he is a Great Basin rattlesnake but would appreciate confirmation.;; Coordinate Uncertainty in Meters: 28090.00000.

GBIFID: 4902087323; Occurrence Remarks: Baby rattle snake swimming across the creek. Weird. Stills from an iPhone video.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4904080563; Occurrence Remarks: Found it dead by the side of the road. DoesnÆt look like roadkill. Looks like someone deliberately killed it.;; Coordinate Uncertainty in Meters: 7311.00000.

GBIFID: 2236895227; Occurrence Remarks: Butte Creek ecological Preserve;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4904006233; Occurrence Remarks: road kill;; Coordinate Uncertainty in Meters: 118.00000.

GBIFID: 4919241627; Occurrence Remarks: I found this rattlesnake on the nature trail at Timpanogos Cave National Monument.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4924008897; Occurrence Remarks: Just chilling on a rock by the trail.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4926165418; Occurrence Remarks: Live male attempting to mate with DOR female;; Coordinate Uncertainty in Meters: 27969.00000.

GBIFID: 4937118979; Occurrence Remarks: Saw it near some rocks crossing Hidden Oak Trail;; Coordinate Uncertainty in Meters: 307.00000.

GBIFID: 4946094675; Occurrence Remarks: Baby rattlesnake with no rattle yet;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4952730412; Occurrence Remarks: This snake was trying to cross the road, so I scared it back into the tall grass for its own safety. The traffic was bad!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4953134234; Occurrence Remarks: A little 2.5 foot Rattler at Butte College. It made it across the road safely.;; Coordinate Uncertainty in Meters: 823.00000.

GBIFID: 4954667688; Occurrence Remarks: ???;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4974219754; Occurrence Remarks: AOR;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4976491586; Occurrence Remarks: ?? was still holding onto life. Effectively DOR;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2244307428; Occurrence Remarks: Sitting in shallow water... go figure.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 5063106041; Occurrence Remarks: April 2021. One of many seen this day;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063128015; Occurrence Remarks: April 2021. One of many seen this day;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063114238; Occurrence Remarks: April 2021. One of many seen this day. This one was camouflaged so well my buddy nearly stepped on it.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063094116; Occurrence Remarks: April 2021. One of many seen this day;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063122122; Occurrence Remarks: April 2021. One of many seen this day. This snake was particularly defensive.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063106238; Occurrence Remarks: March 2022;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063141166; Occurrence Remarks: March 2022. Seen just minutes after a hatchling;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063187554; Occurrence Remarks: June 2022. Likely the same individual seen two weeks earlier.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063079298; Occurrence Remarks: June 2022;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5104572183; Occurrence Remarks: Saw on nelis hike;; Coordinate Uncertainty in Meters: 64.00000.

GBIFID: 5134485725; Occurrence Remarks: That time again. One of three sharing a den;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5140111190; Occurrence Remarks: GPS approximate;; Coordinate Uncertainty in Meters: 225.00000.

GBIFID: 2269312303; Occurrence Remarks: Road cruised.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269311858; Occurrence Remarks: Coiled on shoulder of highway. I thought it was a rusted metal cog or something at first.;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 2273218812; Occurrence Remarks: Road cruised.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269313611; Occurrence Remarks: Road cruised.;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 2269314344; Occurrence Remarks: Road cruised;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269312372; Occurrence Remarks: Had found this adult male and female underneath a boulder near the base of their den crevice for several weeks. On this day, the female was giving birth. Three offspring were already out and crawling over the adult pair. I witnessed two more offspring born, who also immediately began crawling over the adult pair.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269312473; Occurrence Remarks: Two subadults;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269311360; Occurrence Remarks: On the crawl;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269313108; Occurrence Remarks: Eight snakes visible in photo, but two males are mate guarding hidden females underneath them.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2269318034; Occurrence Remarks: Juvenile in ambush position in dry wash.;; Coordinate Uncertainty in Meters: 27969.00000.

GBIFID: 2273251873; Occurrence Remarks: Week old litter of five.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273251957; Occurrence Remarks: Born with strange fluid problem in eye. From a litter of five, two were affected with this problem. I ended up re finding one of them 2 weeks later, and even after a shed, the problem persisted and blood had clearly began collecting behind eye cap.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273253394; Occurrence Remarks: three snakes;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273266681; Occurrence Remarks: Two gravid females. Had observed them over several days basking like this, with only the back end of body exposed. Finishing cooking up those babies? The one of the right I observed giving birth. Inat record: https://www.inaturalist.org/observations/27280290;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273273301; Occurrence Remarks: Gravid female bottom left;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273271446; Occurrence Remarks: Four snakes. Gravid female bottom center.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273272869; Occurrence Remarks: Only pic I got before it darted back into crevice.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273273036; Occurrence Remarks: notice the 2 heads in crevice in bottom left;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273271777; Occurrence Remarks: Nice little crote condo;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2273271651; Occurrence Remarks: Rain collecting pose;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2283086103; Occurrence Remarks: The rattlesnake spent the night in this spot.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5153568063; Occurrence Remarks: we startled this healthy juvenile that rattled loudly and retreated into its burrow;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2283134865; Occurrence Remarks: Found this unfortunate rattler dead on the edge of the road. No obvious injuries, but a car seems a likely culprit given the location. About 3 feet long by my estimate.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2283239968; Occurrence Remarks: Recently hit by car, still moving.;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 5187612591; Occurrence Remarks: Kinda hard to see. Little rattler didnt want anything to do with us.;; Coordinate Uncertainty in Meters: 938.00000.

GBIFID: 2294485289; Occurrence Remarks: Found crossing the Sierra Buttes trail 100ΓÇÖ from the summit.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 2294516800; Occurrence Remarks: This rattlesnake was several feet long!;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 2294554227; Occurrence Remarks: Gravid female;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2294564047; Occurrence Remarks: Dead on road. First detected road mortality this year from the immediate area of my den site.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2294564365; Occurrence Remarks: Three snakes at this rookery rock! Didnt want to disturb them, so didnt get a good look at all of them or if there are more underneath the rock.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2294656974; Occurrence Remarks: Dead on road. Shame, very nice example of the darker blotch, high contrast phenotype that I donÆt see here often.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5216972334; Occurrence Remarks: Checking the blotches leads me to the conclusion that this is the exact same rattler I found on the road the day before;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2311318186; Occurrence Remarks: 6 live and 4 dor.;; Coordinate Uncertainty in Meters: 28030.00000.

GBIFID: 5230298083; Occurrence Remarks: iNaturalist returned ΓÇ£California King SnakeΓÇ¥. It looks more like a gopher or rattlesnake to me. I didnΓÇÖt see or hear a rattle.;; Coordinate Uncertainty in Meters: 145.00000.

GBIFID: 5230315056; Occurrence Remarks: Second Photo.;; Coordinate Uncertainty in Meters: 80.00000.

GBIFID: 5230897194; Occurrence Remarks: No rattle on this guy for whatever reason;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 5230941214; Occurrence Remarks: Male that was recently ran over, probably this morning as rigor mortis had not set in. It was sitting in the road next to a dead skunk and the rattle was missing. I suspect someone deliberately did this to him. I hate people.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 5231230315; Occurrence Remarks: Some nice darker patterns on this one;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 5231741190; Occurrence Remarks: Ambush mode. At first glance I thought its head was a toad;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 910491198; Occurrence Remarks: Juvenile rattlesnake;; Coordinate Uncertainty in Meters: 948.00000.

GBIFID: 5230140195; Occurrence Remarks: Definitely the highlight of the night. Found this guy in ambush waiting for one of the nearby kangaroo rats to wander by. Almost saw one get struck. With @sslss;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 910491322; Occurrence Remarks: Northern Pacific Rattlesnake Crotalus oreganus oreganus - Northern Pacific Rattlesnake. Lake County Variety.;; Coordinate Uncertainty in Meters: 6769.00000.

GBIFID: 2429366659; Occurrence Remarks: About a 18 long. Resting on patio stones.;; Coordinate Uncertainty in Meters: 189.00000.

GBIFID: 1500217769; Occurrence Remarks: Thought it was a gopher snake. Almost picked him up.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1457581180; Occurrence Remarks: Found coiled under tree high up on the south canyon side.;; Coordinate Uncertainty in Meters: 688.00000.

GBIFID: 2429540869; Occurrence Remarks: Slithered off into the brush before we could get a super clear photo of it.;; Coordinate Uncertainty in Meters: 813.00000.

GBIFID: 891026556; Occurrence Remarks: Rattlesnake near Soda Creek, a tributary to the Upper Eel River.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2451742817; Occurrence Remarks: Young of the year. Had a food bolus, likely Sceloporus;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2451742727; Occurrence Remarks: Young of the year;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2563630981; Occurrence Remarks: Within just a few minutes, three specimens were found crossing the same 1/2 mile section of road. All had unusually pale dorsal coloring/markings for this subspecies. About thirty miles southward, I found typical dark brown-blotched lutosus.;; Coordinate Uncertainty in Meters: 977.00000.

GBIFID: 2580104158; Occurrence Remarks: One of two juveniles found in a small rock pile near the BCCER head quarters;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2611023412; Occurrence Remarks: Total Recall trail, near Hoge Rd trailhead;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2626499372; Occurrence Remarks: Startled my son and I when it rattled at us. When calmer, it hid under a big rock. Good size and beautiful colors.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2626452574; Occurrence Remarks: Two individuals curled together;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2814086370; Occurrence Remarks: Found along trail, several people walked past it but snake never moved;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826523377; Occurrence Remarks: Basking on Wild Mad Road in the Shasta-Trinity National Forest. Estimated 20-24 long, and the rattle was hard to see.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2826313075; Occurrence Remarks: Moved off a busy road just in time 3.5 - 4 feet;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2826447098; Occurrence Remarks: Had just been hit still alive but most likely wonÆt survive.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2859951910; Occurrence Remarks: Two snakes seen together. One was only a little bit longer than a foot, while the other which is seen in the photo was a good three and a half feet long. Very calm with very little rattling. Only slowly crawled up into the oak to hide as I approached for the picture.;; Coordinate Uncertainty in Meters: 37.00000.

GBIFID: 2862474369; Occurrence Remarks: Saw this beauty near Mill Creek hangΓÇÖn out on the side of the road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2868322428; Occurrence Remarks: Laytonville Ca Not eureka;; Coordinate Uncertainty in Meters: 5505.00000.

GBIFID: 2868277035; Occurrence Remarks: C.o.melanocephala haha;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 2873990338; Occurrence Remarks: Green tinged snake rattle white/translucent looking multiple rattles diamond like pattern on back;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572369377; Occurrence Remarks: Found hiding resting at mouth of kangaroo rat burrow.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3090817635; Occurrence Remarks: Must of just been waking up. It didnΓÇÖt rattle and wasnΓÇÖt afraid of us when we walked by. DidnΓÇÖt seem like it had a direction of interest. It was slithering in all different directions. Maybe sick?;; Coordinate Uncertainty in Meters: 1807.00000.

GBIFID: 3097420540; Occurrence Remarks: Baby Rattlesnake at Big Chico Creek Ecological Reserve;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 3108984824; Occurrence Remarks: Flattened and tightly coiled, a posture they take for collecting rain to drink of off themselves. Rain didnÆt come today, hopefully tomorrow lil guy.;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3109002819; Occurrence Remarks: Nearly stepped on this one;; Coordinate Uncertainty in Meters: 17780.00000.

GBIFID: 3113486301; Occurrence Remarks: Baby rattler.;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 3117756828; Occurrence Remarks: 11 miles north of hwy 89 on Diamond Fork Rd found DOR.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3117860810; Occurrence Remarks: 11 miles north of hwy 89 on Diamond Fork Rd found DOR.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3117918300; Occurrence Remarks: Road kill. Collected specimen to donate to BYU herp repository;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3302025215; Occurrence Remarks: I saw an old door sitting by the side of the road. Turns out this camp was already occupied.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3302283316; Occurrence Remarks: Next to Green River Trail;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 3321187612; Occurrence Remarks: Awesome eye glow;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3320939104; Occurrence Remarks: Small Baby;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3327787122; Occurrence Remarks: Gravid female;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3327991119; Occurrence Remarks: Gravid female at rookery;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3327714128; Occurrence Remarks: Gravid female;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3328064520; Occurrence Remarks: Thanks Larry;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 3335076230; Occurrence Remarks: Second or third year individual, we love lutosus;; Coordinate Uncertainty in Meters: 96.00000.

GBIFID: 3337880905; Occurrence Remarks: 12 buttons on rattle. About 4 feet long.;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 3385121606; Occurrence Remarks: On the crawl;; Coordinate Uncertainty in Meters: 28090.00000.

Occurrence Remarks: Chill guy; Coordinate Uncertainty in Meters: 28000.00000.

Occurrence Remarks: Not too happy to see me but posed well for pictures; Coordinate Uncertainty in Meters: 28000.00000.

Mendocino, California: 39.419028, -123.229729: : 6/20/2026: k_hopper: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 948.00000.

Occurrence Remarks: Found near freshwater stream, climbed into sagebrush after being spooked; Coordinate Uncertainty in Meters: 29896.00000.

Plumas, California: 40.026194, -121.292383: : 8/21/2025: stishovite: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: 2 seen

Occurrence Remarks: First yearling. Was basking on a foot trail. Couldnt get a picture while it was posed to strike. Rattle was still developing.

Plumas, California: 39.848099, -120.960955: : 7/10/2025: makennap: 10 Jul 2025 ; Coordinate Uncertainty in Meters: 10325.00000.

Trinity, California: 39.990703, -123.067694: : 7/18/2026: Daniel Todd Adams: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Churchill, Nevada: 39.799922, -118.055619: : 9/12/2025: Patrick Kleeman: 12 Sep 2025 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Saw this guy on the dirt road. It looks like heΓÇÖd been run over by a vehicle.; Coordinate Uncertainty in Meters: 15.00000.

Mendocino, California: 39.74678, -123.633963: : 7/16/2026: grasshopper_enjoyer: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 26.00000.

Occurrence Remarks: Occurrence Remarks: Probably ssp. C. oreganus oreganus: North Pacific Rattlesnake; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: Occurrence Remarks: Likes mice from the porta potty ≡ƒÿ₧ At 6900 feet elevation.; Coordinate Uncertainty in Meters: 188.00000.

Occurrence Remarks: Occurrence Remarks: Pattern very reminiscent of lutosus but within intergrade zone with C. (o.) oreganus per Hansen & Shedd 2025; Coordinate Uncertainty in Meters: 27723.00000.

Shasta, California: 40.6175, -122.578347: : 10/28/2025: cmccarron: 28 Oct 2025 ; Coordinate Uncertainty in Meters: 11.10000.

Salt Lake, Utah: 40.780285, -111.834236: : 7/26/2026: lbartkovich: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 25.00000.

Occurrence Remarks: so cool! I thought this rock looked like a good rattlesnake home and indeed was able to spy two denning in its shade. lifer!; Coordinate Uncertainty in Meters: 27692.00000.

Salt Lake, Utah: 40.571975, -111.75326: : 8/1/2024: Adam Redmer: 1 Aug 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Cassia, Idaho: 42.218362, -114.234567: : 7/21/2024: brandonlat: 21 Jul 2024 ; Coordinate Uncertainty in Meters: 10.00000.

Siskiyou, California: 41.962095, -122.595863: : 9/5/2025: clarawoodie: 5 Sep 2025 ; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3858476576; Occurrence Remarks: Definitely had a rattle on tail.;; Coordinate Uncertainty in Meters: 662.00000.

Salt Lake, Utah: 40.566144, -111.79468: : 5/22/2026: tompridham: 22 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Siskiyou, California: 41.61005, -122.596676: : 5/19/2026: Phillip Milner: 19 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Shasta, California: 40.635939, -122.4218: : 5/17/2026: Steven Clinton: 17 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Salt Lake, Utah: 40.764347, -111.82377: : 5/20/2026: kileymorgan: 20 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Lake, Oregon: 42.052036, -119.398924: : 5/20/2026: Alexandra McGinnis: 20 May 2026 ; Coordinate Uncertainty in Meters: 27692.00000.

Trinity, California: 40.792422, -122.927322: : 5/22/2026: Stephen Clifford: 22 May 2026 ; Coordinate Uncertainty in Meters: 17.00000.

Weber, Utah: 41.189791, -111.929228: : 5/23/2026: gabrielcarrie: 23 May 2026 ; Coordinate Uncertainty in Meters: 30.00000.

Salt Lake, Utah: 40.69756, -111.793453: : 5/23/2026: Macey Earle: 23 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Shasta, California: 40.739802, -121.470387: : 5/24/2026: Cassie S.: 24 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Salt Lake, Utah: 40.765516, -111.82396: : 5/25/2026: horsetronaut: 25 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: These photos were taken with a telephoto lens. Please do not get close to rattlesnakes, especially young ones like this. This was a close enough call even for me. Im glad I walk slowly while looking down. This one never made a sound and I easily could have stepped on it.; Coordinate Uncertainty in Meters: 27692.00000.

Harney, Oregon: 42.229868, -118.660083: : 5/24/2026: Mathias Anderson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27661.00000.

Josephine, Oregon: 42.34392, -123.733025: : 5/25/2026: Nathan McCanne: 25 May 2026 ; Coordinate Uncertainty in Meters: 27661.00000.

Shasta, California: 40.6436, -122.591278: : 5/23/2026: Dennis Wahlman: 23 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Trinity, California: 40.539761, -123.092848: : 5/27/2026: Coleman Evans: 27 May 2026 ; Coordinate Uncertainty in Meters: 2763.00000.

Jackson, Oregon: 42.460338, -122.920383: : 5/25/2026: dmgallagher: 25 May 2026 ; Coordinate Uncertainty in Meters: 27630.00000.

Occurrence Remarks: Siskiyou co CA; Coordinate Uncertainty in Meters: 27723.00000.

Siskiyou, California: 41.897682, -122.120098: : 5/23/2026: Andrew Pauly: 23 May 2026 ; Coordinate Uncertainty in Meters: 27723.00000.

Occurrence Remarks: Very sad, the car ahead of us ran over this baby rattler and we moved it off the dirt road in the hopes that it might survive; Coordinate Uncertainty in Meters: 0.11000.

Salt Lake, Utah: 40.767761, -111.824006: : 5/27/2026: Scott D Wright: 27 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Box Elder, Utah: 41.639212, -112.473738: : 9/2/2025: Parker James Lloyd: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 512.00000.

Harney, Oregon: 42.303918, -118.695322: : 5/26/2025: Casey H. Richart: 26 May 2025 ; Coordinate Uncertainty in Meters: 27661.00000.

Trinity, California: 40.815395, -122.825553: : 7/16/2025: Bryce Ryals: 16 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Saw about 10 other snakes besides these two. First one was encountered about a foot away from my foot before I stepped back to photograph.; Coordinate Uncertainty in Meters: 27661.00000.

Siskiyou, California: 41.230687, -122.38233: : 7/12/2025: avmxxre: 12 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Salt Lake, Utah: 40.528745, -111.82335: : 5/10/2026: aestable: 10 May 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Shasta, California: 40.660908, -121.759278: : 5/1/2026: Stephen Clifford: 1 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Found dead on a stump at a campsite.; Coordinate Uncertainty in Meters: 0.11000.

Siskiyou, California: 41.594027, -122.607046: : 5/3/2026: Kate Turner: 3 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Shasta, California: 40.665553, -122.415278: : 5/5/2026: globalbotanicle: 5 May 2026 ; Coordinate Uncertainty in Meters: 1453.00000.

Salt Lake, Utah: 40.771764, -111.833681: : 5/4/2026: Bryn Dentinger: 4 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Salt Lake, Utah: 40.786094, -111.882482: : 5/6/2026: evelynstott: 6 May 2026 ; Coordinate Uncertainty in Meters: 500.00000.

Siskiyou, California: 41.606793, -122.595585: : 5/7/2026: Phillip Milner: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Stepped right next to this guy in flip flopsΓÇª the rattler didnΓÇÖt even move. I jumped 10ft and about shit my pants 10/10 experience, would not do again.; Coordinate Uncertainty in Meters: 4.00000.

Josephine, Oregon: 42.221971, -123.693921: : 5/9/2026: Joanna W. Greenwood: 9 May 2026 ; Coordinate Uncertainty in Meters: 27661.00000.

Salt Lake, Utah: 40.763463, -111.811625: : 4/8/2026: swampkitty: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 211.00000.

Jackson, Oregon: 42.088616, -123.050597: : 4/23/2026: Cesar Garcia Olmos: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 27692.00000.

Shasta, California: 41.171233, -122.362346: : 4/9/2026: Riley Frasier: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

Trinity, California: 41.121236, -122.835517: : 5/25/2025: Matt Reala: 25 May 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Very polite. Strong boundaries.; Coordinate Uncertainty in Meters: 944.00000.

Salt Lake, Utah: 40.779934, -111.80607: : 9/17/2025: Sam Buswell: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 7.00000.

Siskiyou, California: 41.716547, -121.500472: : 9/17/2025: vegsyd: 17 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Siskiyou, California: 41.740917, -121.525588: : 9/21/2025: Phoebe Barnes: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Trinity, California: 40.988642, -122.968169: : 9/20/2025: Cole Abel: 20 Sep 2025 ; Coordinate Uncertainty in Meters: 11533.00000.

Trinity, California: 41.011272, -122.611542: : 5/11/2026: apebrains: 11 May 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Humboldt, California: 40.99027, -123.7769: : 5/11/2026: John Kelly: 11 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Occurrence Remarks: Not sure of the subspecies; Coordinate Uncertainty in Meters: 0.11000.

Cassia, Idaho: 42.133083, -113.656951: : 5/13/2026: gageherring2: 13 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Hard to see the tail in the image, but there is a small rattle on the end. Also, note the huge, triangular head.; Coordinate Uncertainty in Meters: 384.00000.

Utah, Utah: 40.491002, -111.773851: : 5/16/2026: BirdieBirder: 16 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Sidewalk adjacent to the Natural History Museum. Next to trail with grassland and scrub oak; Coordinate Uncertainty in Meters: 233.00000.

Jackson, Oregon: 42.024403, -122.630235: : 3/27/2026: thegloryofkings: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: Found on a porch; Coordinate Uncertainty in Meters: 27939.00000.

Occurrence Remarks: Salt Lake County UT; Coordinate Uncertainty in Meters: 27939.00000.

Elko, Nevada: 41.591988, -115.312592: : 6/30/2025: Reece Redeye-Desposito: 30 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Near large den site Josephine County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: As many as four individuals poking their heads out of a hole that was eye level for me, at 6 feet off the ground!!! Probably the coolest rattlesnake encounter IΓÇÖve ever had. Certainly a site used year after year by a large quantity of rattlesnakes Josephine County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: Probably an overwintering site, but only one detected Josephine County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: Josephine County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: Two small individuals under a large rock at an expected brumation site. Super exciting encounter Josephine County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: SOLC private preserve herp survey. Beautiful, maybe a gravid female? Jackson County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: SOLC private preserve herp survey Jackson County; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: In shade near creek despite my car reading 96┬░!!!! Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: 73┬░ Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: Nothing better than a warm Siskiyou spring evening. 76┬░ Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: DOR Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: 89┬░! Hot! Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: 79┬░ Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: 82┬░ Josephine County; Coordinate Uncertainty in Meters: 27661.00000.

Trinity, California: 41.093211, -122.723022: : 5/24/2025: Matt Berger: 24 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Trinity, California: 41.094775, -122.719017: : 5/26/2025: Matt Berger: 26 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Trinity, California: 41.266261, -122.719477: : 7/5/2026: dharmablur: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Josephine, Oregon: 42.330096, -123.6214: : 6/3/2026: Stefan: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 27661.00000.

Humboldt, California: 40.87977, -123.761125: : 6/1/2026: sashacahill: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: Was hard to spot, right off the trail, but didnt make a sound

Occurrence Remarks: Cant upload, but also got video of snake slithering away with clearer view of rattle.; Coordinate Uncertainty in Meters: 229.00000.

Shasta, California: 40.619287, -122.450439: : 6/7/2026: Kat Moon: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Fun to hike this in-situ while walking along the road at sunset; Coordinate Uncertainty in Meters: 27692.00000.

Trinity, California: 40.986003, -122.933608: : 6/2/2026: botanoah: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Salt Lake, Utah: 40.797338, -111.891784: : 6/7/2026: Grace Fletcher: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Wondering which crotalus species; Coordinate Uncertainty in Meters: 1211.00000.

Siskiyou, California: 41.32013, -122.673657: : 6/9/2026: Charlee: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 27816.00000.

Salt Lake, Utah: 40.711195, -111.955245: : 6/7/2026: Kenzie Anderson-Bell: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 27908.00000.

Shasta, California: 40.988033, -122.184272: : 6/11/2026: Stephen Clifford: 11 Jun 2026 ; Coordinate Uncertainty in Meters: 119.00000.

Salt Lake, Utah: 40.573303, -111.754028: : 6/2/2026: jannaschofield: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Salt Lake, Utah: 40.694608, -111.769632: : 4/15/2026: Abby Williamson: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 74.00000.

Occurrence Remarks: Gorgeous little pal; Coordinate Uncertainty in Meters: 27908.00000.

Occurrence Remarks: ≡ƒÿì; Coordinate Uncertainty in Meters: 27908.00000.

Occurrence Remarks: Adolescent; Coordinate Uncertainty in Meters: 6.00000.

Del Norte, California: 41.937797, -124.006447: : 6/13/2026: maureen-j-jules: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Harney, Oregon: 42.137785, -118.692109: : 6/18/2026: Merrill Peterson: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 27692.00000.

Occurrence Remarks: DOR, Adult; Coordinate Uncertainty in Meters: 27816.00000.

Occurrence Remarks: DOR Adult Midget Faded Rattlesnake; Coordinate Uncertainty in Meters: 27816.00000.

Sweetwater, Wyoming: 41.228357, -109.549579: : 6/19/2026: Beau Narum: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 27816.00000.

Sweetwater, Wyoming: 41.265049, -109.503578: : 6/19/2026: Beau Narum: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 27816.00000.

Salt Lake, Utah: 40.495072, -111.843055: : 6/21/2026: dead_collector: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 1414.00000.

Humboldt, Nevada: 41.356382, -118.800704: : 6/19/2026: Harry_Cooper: 19 Jun 2026 ; Coordinate Uncertainty in Meters: 439.00000.

Shasta, California: 40.935276, -122.246429: : 6/20/2026: isommer: 20 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Siskiyou, California: 41.625558, -122.590014: : 6/24/2026: Daniel Williams: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 2562.00000.

Occurrence Remarks: Grizzly Peak Preserve; Coordinate Uncertainty in Meters: 27661.00000.

Siskiyou, California: 41.605478, -122.596812: : 6/24/2026: Maddy Richards: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Salt Lake, Utah: 40.565838, -111.792938: : 6/26/2026: aestable: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Trinity, California: 40.870288, -122.89357: : 6/25/2026: Stephen Clifford: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Trinity, California: 40.98613, -122.618454: : 7/15/2026: apebrains: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Cache, Utah: 41.729563, -111.786597: : 6/28/2026: kyleefillinger1: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Tan with brown diamonds, 4-5 feet long, cannot tell if its tail has a rattle; Coordinate Uncertainty in Meters: 411.00000.

Lake, Oregon: 42.138271, -119.547839: : 6/30/2026: Alexandra McGinnis: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 27692.00000.

Salt Lake, Utah: 40.796649, -111.892129: : 7/1/2026: Grace Fletcher: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Humboldt, California: 40.47837, -123.668725: : 6/30/2026: claredooley: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3456706249; Occurrence Remarks: Seen on Devils half acre north of JJs in Old Station;; Coordinate Uncertainty in Meters: 62293.00000.

GBIFID: 3784640932; Occurrence Remarks: 1394 feet elevation.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 3802632849; Occurrence Remarks: Found in a dry creek bed as we hiked up to the crags via a less well-trodden trail that followed the creek.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3858399387; Occurrence Remarks: Wow I was not expecting this lil rascal in a steep moist ravine but there ya go. a pretty scary encounter;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 3859679126; Occurrence Remarks: In a drainage off the new Parleys Pointe Trail in the foothills above Salt Lake City. Was about 3 feet long, clearly had a rattle but it did not shake it.;; Coordinate Uncertainty in Meters: 111.00000.

GBIFID: 3889129415; Occurrence Remarks: Right off the hiking path;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3860134862; Occurrence Remarks: tis the season;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 3859023555; Occurrence Remarks: Resting on the trail. Went off to the side to watch me from a sheltered spot. Cute;; Coordinate Uncertainty in Meters: 27785.00000.

GBIFID: 3859813477; Occurrence Remarks: Long dead;; Coordinate Uncertainty in Meters: 27754.00000.

GBIFID: 3874028722; Occurrence Remarks: Pretty big;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3873744304; Occurrence Remarks: Going down rodent hole. Harrison Pass;; Coordinate Uncertainty in Meters: 37207.00000.

GBIFID: 3889155851; Occurrence Remarks: Enjoying an outdoor walk in the garden - and this one crosses the path... Red Butte Garden staff remove and relocate rattlesnake to other location in garden. (see video here: https://youtube.com/shorts/6u8EMF3KShg) This rattlesnake had obviously recently captured and eaten its prey - noting the bulge in mid-section. I counted about 10 rattles on the tail - but this does not equate to age of rattlesnake. Great Basin Rattlesnake;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3892281845; Occurrence Remarks: Picture sent to me;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 3903351268; Occurrence Remarks: Im not sure if this is the same rattlesnake as seen about an hour earlier;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3903384764; Occurrence Remarks: This isnt the same snake as the one I posted a few days ago, much smaller and rattles not very developed;; Coordinate Uncertainty in Meters: 41.00000.

GBIFID: 3986325736; Occurrence Remarks: CW for gory roadkill, snake is 2nd photo;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1883941716; Occurrence Remarks: Up Right Hand Fork, Logan Canyon;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1883957789; Occurrence Remarks: Live on rd;; Coordinate Uncertainty in Meters: 27877.00000.

GBIFID: 1883964425; Occurrence Remarks: Live on rd;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 4034704278; Occurrence Remarks: If you look closely, the rattlesnake is in the twigs.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1092904279; Occurrence Remarks: In the dry creek bed of Coon creek at the crossing of the south fork trail. A green racer was less than ten feet away.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1898806798; Occurrence Remarks: Adult found under cabin. Relocated.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1098905825; Occurrence Remarks: Many sightings of this species over the years. This enconter was the first where the individual was compelled to warn me with a shake of its tail.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4133971918; Occurrence Remarks: Found a Western rattlesnake that tucked itself in some rocks and cheat grass. And about two steps to the left, I found a very young hatchling that did not yet have a rattle.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 4137652761; Occurrence Remarks: Saw two of them and this was the larger one.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4137949626; Occurrence Remarks: Not a sombrero. Very pretty juvenile tho!;; Coordinate Uncertainty in Meters: 27877.00000.

GBIFID: 4137994517; Occurrence Remarks: Walking a game trail and this rattler saw me before I saw it and we both scared the absolute shit out of each other. It bolted and went under a large juniper log. I jumped into the air, exclaimed in surprise and proceeded to take pictures.;; Coordinate Uncertainty in Meters: 27754.00000.

GBIFID: 4137824978; Occurrence Remarks: crushed by a car;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4171533425; Occurrence Remarks: On the south summit of Lone Peak. Observation by Paky Callahan. Elevation 11,000+ ft!;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4172322358; Occurrence Remarks: Sun basking in the Trinity Alps Wilderness;; Coordinate Uncertainty in Meters: 461.00000.

GBIFID: 4400426694; Occurrence Remarks: Swimming in the canal. got very close to my hand. I think it was drowning but I coudnt do anything about it;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 4416805524; Occurrence Remarks: Gorgeous individual. Very docile. Left alone after pics.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4420742361; Occurrence Remarks: Big 3+ footer.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4424170810; Occurrence Remarks: Moving along curb in River Park Highlands neighborhood.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4442490361; Occurrence Remarks: Same individual, moved off the road on my way in and on my way out.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4442551853; Occurrence Remarks: AOR;; Coordinate Uncertainty in Meters: 27877.00000.

GBIFID: 4519224564; Occurrence Remarks: At 1707 m (5600 ft) near seasonal pond. Picture has a yellow caste due to early morning light.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 4519203944; Occurrence Remarks: Ridgetop at 1783 m (5850 ft).;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 1993744676; Occurrence Remarks: Jackson County. The rattle was unmistakable, suspect a younger animal based on size, brighter coloring, & repeated air strikes.;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 4535971750; Occurrence Remarks: I thought this snake was flattened as I approached in my vehicle. This was not the case ù it sat contently in the middle of the road while digesting what was likely an unfortunate ground-squirrel.;; Coordinate Uncertainty in Meters: 1315.00000.

GBIFID: 4863746704; Occurrence Remarks: Flipped under a rock near a large rock outcrop I assume they den in. Another small one found about 10 feet away Jackson County;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 4863487512; Occurrence Remarks: Flipped about 10 feet away from another smaller one Jackson County;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 4872533359; Occurrence Remarks: Too small to rattle;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4872590870; Occurrence Remarks: Just old enough to rattle;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4875360428; Occurrence Remarks: Rdkill;; Coordinate Uncertainty in Meters: 27816.00000.

Humboldt, California: 41.249181, -123.665289: : 6/1/2024: Chloe and Trevor Van Loon: 1 Jun 2024 :

GBIFID: 4875327459; Occurrence Remarks: Probably Great Basin rattlesnake. Images are very zoomed in and cropped :);; Coordinate Uncertainty in Meters: 4.00000.

Trinity, California: 40.548103, -122.78517: : 6/5/2024: Chloe and Trevor Van Loon: 5 Jun 2024 :

GBIFID: 4891949348; Occurrence Remarks: 75 degrees, overcast;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 4901635202; Occurrence Remarks: Heard the rattle, got poor shots but wanted to keep my distance;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4901478924; Occurrence Remarks: Exited I-5 turned left on dead end road hoping to see something moving and found nice 4 Norpac crossing road. Just a little while later Exited 279 Louie Road North of Weed CA and found Cal King crossing Rd. Both snakes were moving at 72-73F. After sunset.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4901287336; Occurrence Remarks: Deceased.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4901273102; Occurrence Remarks: so beautiful and polite ??;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 4901810307; Occurrence Remarks: moving sluggishly beneath Douglas Fir; Rogue River-Siskiyou National Forest maybe 15 miles west of Grants Pass, elevation about ~1200ft (370m);; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 4901291372; Occurrence Remarks: Found dead on road;; Coordinate Uncertainty in Meters: 27877.00000.

GBIFID: 4908011044; Occurrence Remarks: Seen crossing road, near creek. Rattled when I drove past it. Main portion of body was very green. Around 3.5-4 long.;; Coordinate Uncertainty in Meters: 27908.00000.

Siskiyou, California: 41.923644, -123.189214: : 7/4/2024: Chloe and Trevor Van Loon: 4 Jul 2024 :

Siskiyou, California: 41.941044, -123.137261: : 7/4/2024: Chloe and Trevor Van Loon: 4 Jul 2024 :

GBIFID: 4907987028; Occurrence Remarks: First Rattlesnake Ive ever seen! Met this one on my long run.;; Coordinate Uncertainty in Meters: 1613.00000.

GBIFID: 4909004607; Occurrence Remarks: Low 80s. Gorgeous snake, lifer for this subspecies. Lutes lived up to the hype!!! Harney County;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 4919452108; Occurrence Remarks: Dead Indian Memorial Road, Westbound. 3% cloud cover, 68 degrees F. Two lane paved country road. Post and metal guard rail on eastbound shoulder. Annual grassland above westbound side, oak dominate woodland and Walker Creek below the eastbound side. 43 acre fire occurred within 100 yards of site on July 4, 2023. Snake was on the fog line of the westbound side.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 4919152695; Occurrence Remarks: Dead Indian Memorial Road, Eastbound 3% cloud cover, 68 degrees F. Two lane paved country road. Gravel pullout, post and metal guard rail in turn on westbound side. Walker Creek just below Near upper end of 43 acre fire that occurred on July 4, 2024 Catharses aura (Turkey Vulture) observed above and Vespula spp. (Yellow Jacket) seen on snake.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 4924070871; Occurrence Remarks: DOR :-(;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 4923832208; Occurrence Remarks: Rattled to let me know the spot I had stopped to try to identify a sparrow was too close to it on the trail;; Coordinate Uncertainty in Meters: 68.00000.

GBIFID: 4924173249; Occurrence Remarks: taken from very far away lol;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4926041692; Occurrence Remarks: 26 inches long. Got trapped in bird netting at garden edge. Ive seen 3 snakes here in last 3 years. 2 of them were accidentally snared in bird netting. The other was a 40 inch long gopher snake, dead when i discovered it. The rattler was very much alive, but not for long.;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 4936999453; Occurrence Remarks: Deep blue;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 4937077043; Occurrence Remarks: This was just off the very popular Wind Cave trail in Logan canyon.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4945558021; Occurrence Remarks: Two great basin rattlesnakes mating (I believe that is what they are doing).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4952625223; Occurrence Remarks: Adjusted lighting to see the snake better;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 4936093542; Occurrence Remarks: This rattler was resting on the dirt road (I almost ran over it by accident!). It looked like it has recently eaten something. Its background color was light brown with almost a slight greenish tint to it. The rattle had only 3 segments. From the iNat images for ID, this rattler seems to most resemble the Prairie Rattlesnake (but none have ever been sighted in NV).;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5006732772; Occurrence Remarks: Historical Observation.;; Coordinate Uncertainty in Meters: 3705.00000.

GBIFID: 5007670445; Occurrence Remarks: Historical observation. DOR.;; Coordinate Uncertainty in Meters: 27847.00000.

GBIFID: 5063119605; Occurrence Remarks: July 2020. Lifer Great Basin Rattlesnake;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063143464; Occurrence Remarks: July 2020. Seen only 20 minutes after my lifer;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063131420; Occurrence Remarks: July 2020;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 5063127471; Occurrence Remarks: August 2020;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 5063134684; Occurrence Remarks: April 2021. One of five hatchlings in a den with an adult. The adult has its own document;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063090361; Occurrence Remarks: April 2021. Found outside a den with five hatchlings. One hatchling is documented.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063146156; Occurrence Remarks: April 2021. At least eight rattlesnakes in a den.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063090792; Occurrence Remarks: April 2021. Two of many seen this day.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063136181; Occurrence Remarks: April 2021. One of many seen this day.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063122901; Occurrence Remarks: August 2021;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063176411; Occurrence Remarks: April 2022;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063178326; Occurrence Remarks: April 2022;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5063123149; Occurrence Remarks: July 2022;; Coordinate Uncertainty in Meters: 69.00000.

GBIFID: 5063203545; Occurrence Remarks: July 2022. Just chilling on the side of a high-elevation trail.;; Coordinate Uncertainty in Meters: 155.00000.

GBIFID: 5063196316; Occurrence Remarks: July 2022;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 2251944131; Occurrence Remarks: Northern Pacific Rattlesnake, juvenile, about 18 inches long, with soft rattling sound, on the Swift Creek trail, Eastern Trinity Alps.;; Coordinate Uncertainty in Meters: 175.00000.

GBIFID: 5063511557; Occurrence Remarks: fresh roadkill (still writhing) Western Rattlesnake, Old Hwy 99 S, at about 42.041678, -122.591381, Jackson Co, OREGON (E of I-5);; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 5134542765; Occurrence Remarks: One of three sharing a den.;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5134296214; Occurrence Remarks: Front snake in second picture;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5134545021; Occurrence Remarks: Back snake in second picture;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 2269313488; Occurrence Remarks: Road cruised. Patternless, sub adult male.;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 2283129106; Occurrence Remarks: Juvenile found on road;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5167258222; Occurrence Remarks: Came home to this guy guarding the gate!;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 5176559334; Occurrence Remarks: Road killed on Gilman Rd;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2294482539; Occurrence Remarks: Juvenile found dead on road. An adult was found live about a mile from here. Air Temp 72F. Nearing full moon and mostly clear skies with low to no wind.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 5188245294; Occurrence Remarks: Dead Juvenile;; Coordinate Uncertainty in Meters: 986.00000.

GBIFID: 5187930818; Occurrence Remarks: Baby Great Basin rattler eating a sagebrush lizard;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5188390254; Occurrence Remarks: Surprisingly living under the rattlesnake sign;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5187833951; Occurrence Remarks: Very chill, moving very slow. Not sure why it went up on the rock - to absorb a bit more heat for the night?;; Coordinate Uncertainty in Meters: 127.00000.

GBIFID: 5198772693; Occurrence Remarks: Dead on stream bank;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 5198554715; Occurrence Remarks: Juvenile(?) rattlesnake in Red Butte Garden.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5198897573; Occurrence Remarks: It didnt rattle at all, even when I nudged its tail with my trekking pole.;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 5216551618; Occurrence Remarks: Stretched out for some morning basking;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 5216207851; Occurrence Remarks: Poor gal wasnt quite dead yet. Saw two of these recently road kills in a couple miles. Their heads were injured but not their bodies, so I wonder if they get damaged when they strike at a passing car, rather than being crushed by the tires?;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5230934934; Occurrence Remarks: Subadult, almost stepped on it. It was in some large shale on the side of a steep creek canyon.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 5215904044; Occurrence Remarks: pc: Seth Aamodt Farmington Canyon;; Coordinate Uncertainty in Meters: 27847.00000.

GBIFID: 2311338243; Occurrence Remarks: Found crossing forest service road;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5230655234; Occurrence Remarks: Looks pretty good for *C* (*o.*) *lutosus*, but well within intergrade range between *C* (*o.*) *lutosus* and *C* (*o.*) *oreganus*;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5231095261; Occurrence Remarks: Looks pretty good for *C* (*o.*) *lutosus*, but well within intergrade range between *C* (*o.*) *lutosus* and *C* (*o.*) *oreganus*;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 5230088227; Occurrence Remarks: Found burned in a fire scar.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 5230857727; Occurrence Remarks: DOR :^(;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2397637845; Occurrence Remarks: Louie Road;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2423060354; Occurrence Remarks: Not the best photos. More than 1 meter long, if I recall.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2423156075; Occurrence Remarks: I think this is the Crotalus organs. Found near the SR 305 between Battle Mountain, NV and Austin, NV.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1802610100; Occurrence Remarks: A new born Great Basin Rattlesnake on Red Butte.;; Coordinate Uncertainty in Meters: 134.00000.

GBIFID: 1901088909; Occurrence Remarks: A nice 2 1/2 footer;; Coordinate Uncertainty in Meters: 771.00000.

GBIFID: 2574170231; Occurrence Remarks: I found my two Great Basin Rattlesnakes in a metal pipe up city creek canyon.;; Coordinate Uncertainty in Meters: 29.00000.

GBIFID: 1315055510; Occurrence Remarks: Northern Pacific Rattlesnake, Bear Lakes Trailhead, Trinity Co., California.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2611253326; Occurrence Remarks: Along the ridgeline of Jacks Peak;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2619982980; Occurrence Remarks: 2 rattlesnakes found next to each other. Smaller one circled in 1st photo, and a crappy quality closeup of it in the 3rd photo.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 2626340400; Occurrence Remarks: North Shore Lake Siskiyou;; Coordinate Uncertainty in Meters: 318.00000.

GBIFID: 2626313839; Occurrence Remarks: Understandably, I didnÆt get too close for the photo. Clear rattle and flat diamond head. Was just making its way off the trail/road and into the grass when I came upon it. 3-4 feet long. Largest rattlesnake IÆve seen in person here.;; Coordinate Uncertainty in Meters: 165.00000.

Siskiyou, California: 41.924, -123.183: : 7/24/2008: Cecelia Alexander: 24 Jul 2008 :
GBIFID: 2626230614; Occurrence Remarks: Crotalus oreganus oreganus, Pacific Crest Trail between Cook & Green Pass and Lilypad Lake, 41.924 -123.183, Siskiyou County, California, 24 Jul 2008.;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 2626438430; Occurrence Remarks: In 2015 we spent a few hours doing a short survey of Whiskeytown Lake, during which we found 14 species of herps including possibly the southwesternmost extent of the shastae Black Salamander population. Three years later the devastating Carr Fire burned through the entire area. We talk about the pressures this region faces in the last part of Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 2633984176; Occurrence Remarks: Nearly stepped on it while taking photos at the Red Butte Garden and Arboretum, thank goodness for that rattle.;; Coordinate Uncertainty in Meters: 33.00000.

GBIFID: 2633985236; Occurrence Remarks: About 4-5 feet long. Was hunting a nest of young ground squirrels.;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 2634487843; Occurrence Remarks: Basking on trail. 10am;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 2634059223; Occurrence Remarks: Found this rattle snake on the road ... was still alive after being hit by a car minutes earlier.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 2634293135; Occurrence Remarks: Was found DOR, posed for picture;; Coordinate Uncertainty in Meters: 27.00000.

GBIFID: 1453313272; Occurrence Remarks: This snake was one of 9 found at a den only a couple miles from where I live. Thank you Colin Guiley for showing me this amazing site. Sadly, it is now being developed.;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 2641412735; Occurrence Remarks: 71 degrees Fahrenheit after a high of 77. Partially on the road by Kneeland airport. The snake struck out at my passing truck and rattled, backing up the hillside bank as I reversed to get photograph.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2641560578; Occurrence Remarks: Gopher Snake or Rattlesnake;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1453412885; Occurrence Remarks: This was a bigun. I grew up in Ohio, where rattlesnakes were extremely rare. Here, they are as common as youd ever want them to be.;; Coordinate Uncertainty in Meters: 27723.00000.

GBIFID: 1453429925; Occurrence Remarks: This young rattlesnake was hanging out at our campsite. He slithered right up to us while we were eating dinner. He promptly got scared and sought refuge under this rock.;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 2814131331; Occurrence Remarks: I think itÆs Great Basin only bc itÆs the most common.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3070348054; Occurrence Remarks: Gave fair warning before things got critical. Good snake!;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2823350573; Occurrence Remarks: Young. The younger ones must have whiter colors.;; Coordinate Uncertainty in Meters: 68.00000.

GBIFID: 3014001466; Occurrence Remarks: DOR along roadside.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826484720; Occurrence Remarks: We found it by the parking lot at the mouth of Providence Canyon. Less than 30 inches long. We encouraged people to keep their dogs on leash on the area.;; Coordinate Uncertainty in Meters: 858.00000.

GBIFID: 2851200369; Occurrence Remarks: MP 50.77 DOR;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 2850825138; Occurrence Remarks: Found in yard. Caught and relocated away from house;; Coordinate Uncertainty in Meters: 48.00000.

GBIFID: 2856630560; Occurrence Remarks: Out in front of probable den site;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 2859933949; Occurrence Remarks: Removed from neighborÆs window well and relocated;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 2868091891; Occurrence Remarks: Small but shook its tail when I got close, the tip of its tail was black;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3067601278; Occurrence Remarks: After we passed it, it coiled up and started slithering away at the same time. It was really interesting, he wasnÆt sure weather to go on the evasive or offensive. He also wasnÆt rattling and his tail just had a black stub. I didnÆt see a rattle but the head was very rattle snake like.;; Coordinate Uncertainty in Meters: 354.00000.

GBIFID: 1563447919; Occurrence Remarks: I am guessing at Great Basin Rattlesnake. Thx.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571084919; Occurrence Remarks: Crossing road;; Coordinate Uncertainty in Meters: 27692.00000.

GBIFID: 2988655774; Occurrence Remarks: Stick looks awful in the pic, but was used to pin the snake before it was moved it from the busy trail. Snake was unharmed in the process.;; Coordinate Uncertainty in Meters: 27847.00000.

GBIFID: 3070653994; Occurrence Remarks: multiple individuals, SE facing rocky outcrop with deep cracks;; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 3112466383; Occurrence Remarks: The region of Modoc county in Northern California is home to the subspecies Great Basin Rattlesnake. This subspecies is part of the species Western Rattlesnake.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3112448502; Occurrence Remarks: Right beside a lip fern I leaned in to check out...;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3113486726; Occurrence Remarks: 2 individuals pictured.;; Coordinate Uncertainty in Meters: 27908.00000.

GBIFID: 3118265155; Occurrence Remarks: About 2ft long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3118237485; Occurrence Remarks: Not the snake I was looking for, but IÆll take it. Over a meter long.;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 3302423826; Occurrence Remarks: Last years young, in the crawl across paved road;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3302271988; Occurrence Remarks: Tiny baby Great Basin rattler! Had to have just been born, I talked to multiple people who said they saw at least one that day. Absolutely adorable.;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 3301997705; Occurrence Remarks: Dead on road (Or about to be as writhing from head injury);; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 3301987142; Occurrence Remarks: We were on a high school sponsored summer school backpack. We hiked cross country, off trail from Alpine to Smith Lake. We observed a rattlesnake. Unfortunately, there was a feeling of fear, and it was killed with a rock. There was no adult supervision with us. Our teacher had to go back to the trailhead with someone that wanted to go home. I took this slide and made a digital copy of it. The date is on the slide sleeve.;; Coordinate Uncertainty in Meters: 344.00000.

GBIFID: 3302105253; Occurrence Remarks: Baby rattler relocated from my friendÆs front yard. Lots of rattlesnakes out right now;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 3302409522; Occurrence Remarks: Another rattler in my buddyÆs yard. Second pic is when I relocated and released it.;; Coordinate Uncertainty in Meters: 27816.00000.

GBIFID: 3301942332; Occurrence Remarks: Found near a cut around 8:30 pm next to shorline trail;; Coordinate Uncertainty in Meters: 527.00000.

GBIFID: 3302365899; Occurrence Remarks: Moving across trail in front of museum.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3302256067; Occurrence Remarks: Possibly a juvenile rattlesnake?;; Coordinate Uncertainty in Meters: 58.00000.

GBIFID: 3302294844; Occurrence Remarks: The dogs trotted right past this one, blissfully unaware... ≡ƒÿ¼ No harm, no foul by anyone involved, fortunately.;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 3325701502; Occurrence Remarks: This was IDΓÇÖd by two biology professors at my fieldschool.;; Coordinate Uncertainty in Meters: 12619.00000.

GBIFID: 3320904142; Occurrence Remarks: Mueller Park Trail;; Coordinate Uncertainty in Meters: 1931.00000.

GBIFID: 3325762351; Occurrence Remarks: On road.;; Coordinate Uncertainty in Meters: 27661.00000.

GBIFID: 3330793179; Occurrence Remarks: Hiking Jardine-Juniper Trail, very near the halfway point. Relatively docile, did come across it a second time and it rattled at me then!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1703212461; Occurrence Remarks: Was seen basking on a dirt road, the specimen was moved to adjacent bushes in order to prevent encounters with joggers.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3384285651; Occurrence Remarks: Small rattlesnake on the Crest of Jacks Mountain, warning us away with her rattle!;; Coordinate Uncertainty in Meters: 0.11000.

Salt Lake, Utah: 40.761155, -111.815868: : 7/3/2026: makennahomer: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 79.00000.

Salt Lake, Utah: 40.543732, -111.804718: : 8/21/2025: Nels S Rasmussen: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Josephine, Oregon: 42.206474, -123.59132: : 7/4/2026: keldadiffendaffer: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 27661.00000.

Trinity, California: 40.785487, -122.949497: : 7/2/2026: Coleman Evans: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Salt Lake, Utah: 40.654187, -111.772848: : 7/5/2026: epiphany_pb: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Humboldt, Nevada: 41.314122, -119.166092: : 8/18/2025: Anna Caro: 18 Aug 2025 ; Coordinate Uncertainty in Meters: 11.00000.

Trinity, California: 41.168997, -122.697248: : 7/4/2026: brdnrd59: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 53.00000.

Occurrence Remarks: On road. Air temp above road: 86F. Weather: Mostly cloudy with occasional very light rain.; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: Newborn on the crawl; Coordinate Uncertainty in Meters: 27939.00000.

Occurrence Remarks: Tw open wound Unfortunate DOR; Coordinate Uncertainty in Meters: 27754.00000.

Siskiyou, California: 41.192642, -122.315462: : 10/4/2025: kylaschmitt: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 10120.00000.

Trinity, California: 40.913638, -123.023055: : 8/31/2025: Burt Lentil: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Seen at night, walked by once and when going by again roughly a minute later it had caught a bat.; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: On road. Air temp above road: 87F. Road temp: 91F. Weather: Mostly cloudy with occasional very light rain.; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: Dead on road. Air temp above road: 90F. Road temp: 91F. Weather: Mostly cloudy with occasional very light rain. Neonate.; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: On road. Air temp above road: 86-90F. Weather: Mostly cloudy with occasional very light rain.; Coordinate Uncertainty in Meters: 27661.00000.

Occurrence Remarks: On road. Air temp above road: 86F. Weather: Mostly cloudy with occasional very light rain. Neonate.; Coordinate Uncertainty in Meters: 27661.00000.

Salt Lake, Utah: 40.771594, -111.815511: : 9/6/2025: utah_klaus: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 15.00000.

Weber, Utah: 41.192937, -111.930953: : 9/6/2025: theduckman: 6 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: On the crawl; Coordinate Uncertainty in Meters: 27939.00000.

Salt Lake, Utah: 40.767445, -111.822953: : 7/11/2026: Zach Earl: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: This was the largest rattle snake I have seen here, about 5 ft long; Coordinate Uncertainty in Meters: 33.00000.

Siskiyou, California: 41.60577, -122.59734: : 7/13/2026: Phillip Milner: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Had a small rattle but was a big snake; Coordinate Uncertainty in Meters: 6.00000.

Washoe, Nevada: 41.412181, -119.706956: : 6/3/2025: Matt Berger: 3 Jun 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Trinity, California: 41.321804, -122.643684: : 7/17/2026: sangsterj: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Humboldt, Nevada: 41.030498, -119.018159: : 7/16/2026: Harry_Cooper: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Pershing, Nevada: 40.607301, -119.019053: : 7/17/2026: Harry_Cooper: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Trinity, California: 40.741697, -122.857744: : 7/19/2026: Patrick Gresh: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 27908.00000.

Siskiyou, California: 41.397068, -122.528223: : 9/14/2025: Nathan McCanne: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Shasta, California: 40.611111, -122.528532: : 4/18/2026: smellla: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Shasta, California: 40.511737, -121.943502: : 5/15/2026: aloo-the-poet: 15 May 2026 ; Coordinate Uncertainty in Meters: 27939.00000.

GBIFID: 3764315013; Occurrence Remarks: Flipped under rock at den site;; Coordinate Uncertainty in Meters: 27537.00000.

Occurrence Remarks: Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 27443.00000.

Occurrence Remarks: Occurrence Remarks: Coiled and rattling along a trail near Steamboat Creek at Canton Creek Campground. Startled by dogs, it did not strike. Someone experienced with rattlesnakes moved it outside of the campground.; Coordinate Uncertainty in Meters: 27505.00000.

Occurrence Remarks: Occurrence Remarks: DOR. Moved off road; Coordinate Uncertainty in Meters: 27443.00000.

Occurrence Remarks: Occurrence Remarks: ≡ƒÿì≡ƒÿì≡ƒÿì≡ƒÿì; Coordinate Uncertainty in Meters: 27537.00000.

Occurrence Remarks: Occurrence Remarks: Dead under rock; Coordinate Uncertainty in Meters: 27537.00000.

Owyhee, Idaho: 43.321308, -116.703283: : 9/14/2025: Hudson Webb: 14 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859531718; Occurrence Remarks: Gopher Snake or Rattlesnake?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4145435071; Occurrence Remarks: Large and very fresh (probably from yesterday?) shed. Snake hook for scale (pun intended). I usually dont bother uploading sheds on iNat but this one was in good condition;; Coordinate Uncertainty in Meters: 0.11000.

Curry, Oregon: 42.610533, -123.932618: : 5/29/2026: Nathan Stewart: 29 May 2026 ; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: Tail end of a very young one; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: A gorgeous rattlesnake at the top of the butte!! So cool to see one! :); Coordinate Uncertainty in Meters: 27411.00000.

Owyhee, Idaho: 42.719678, -116.35672: : 5/22/2026: avaandrus: 22 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Harney, Oregon: 43.525574, -118.401289: : 5/7/2026: Peter Olsoy: 7 May 2026 ; Coordinate Uncertainty in Meters: 27474.00000.

Occurrence Remarks: Eating a rodent, presumably a Peromyscus. Was rattling away at me while trying to make off with its prize.; Coordinate Uncertainty in Meters: 27474.00000.

Unknown, Oregon: 42.954403, -117.021504: : 5/20/2026: Colton Veltkamp: 20 May 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: Lil buddy sunning in the road!; Coordinate Uncertainty in Meters: 27411.00000.

Harney, Oregon: 43.897512, -119.08699: : 5/23/2026: Allison Padilla: 23 May 2026 ; Coordinate Uncertainty in Meters: 27411.00000.

Harney, Oregon: 42.761815, -118.542546: : 5/22/2026: Clara Oliverson: 22 May 2026 ; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: Wasnt paying attention, was listing to music too and still heard it.; Coordinate Uncertainty in Meters: 4.00000.

Owyhee, Idaho: 42.70415, -116.362339: : 5/24/2026: dataecologist: 24 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

Malheur, Oregon: 43.632414, -117.212776: : 5/23/2026: Mathias Anderson: 23 May 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Malheur, Oregon: 43.666155, -117.249054: : 5/23/2026: Mathias Anderson: 23 May 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Malheur, Oregon: 43.688222, -117.337397: : 5/24/2026: Mathias Anderson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Harney, Oregon: 42.951713, -118.981733: : 5/24/2026: Mathias Anderson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Harney, Oregon: 43.163375, -118.924648: : 5/24/2026: Mathias Anderson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Harney, Oregon: 43.749318, -119.097232: : 5/24/2026: Clara Oliverson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Harney, Oregon: 43.690564, -119.138009: : 5/24/2026: Clara Oliverson: 24 May 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Bonneville, Idaho: 43.350722, -111.781983: : 5/23/2026: erinneelymorris: 23 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Occurrence Remarks: Douglas co OR; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: Douglas co OR; Coordinate Uncertainty in Meters: 27599.00000.

Harney, Oregon: 43.472494, -119.681344: : 5/16/2026: lukescritters: 16 May 2026 ; Coordinate Uncertainty in Meters: 27474.00000.

Harney, Oregon: 43.242328, -118.846572: : 5/31/2026: Brodie Cass Talbott: 31 May 2026 ; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1913698372; Occurrence Remarks: Mating;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 3860002201; Occurrence Remarks: 3800 foot elevation;; Coordinate Uncertainty in Meters: 0.11000.

Lake, Oregon: 42.659505, -120.258779: : 6/3/2025: wetlandwanderer: 3 Jun 2025 ; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: South Willamette Valley; Coordinate Uncertainty in Meters: 27411.00000.

Jefferson, Idaho: 43.964972, -112.28807: : 5/2/2026: sammo_west: 2 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Ada, Idaho: 43.2382, -116.372348: : 5/2/2026: Emma Jaworski: 2 May 2026 ; Coordinate Uncertainty in Meters: 185.00000.

Harney, Oregon: 42.519676, -118.480775: : 5/3/2026: kylaschmitt: 3 May 2026 ; Coordinate Uncertainty in Meters: 27630.00000.

Occurrence Remarks: Under rock; Coordinate Uncertainty in Meters: 27505.00000.

Occurrence Remarks: under rock; Coordinate Uncertainty in Meters: 27537.00000.

Douglas, Oregon: 42.870405, -123.677604: : 5/9/2026: Mathias Anderson: 9 May 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Douglas, Oregon: 42.894993, -123.456288: : 5/9/2026: Mathias Anderson: 9 May 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Malheur, Oregon: 42.661044, -117.247041: : 5/6/2026: Colton Veltkamp: 6 May 2026 ; Coordinate Uncertainty in Meters: 27599.00000.

Jackson, Oregon: 42.559102, -122.981543: : 10/12/2025: Riley Frasier: 12 Oct 2025 ; Coordinate Uncertainty in Meters: 27630.00000.

Lane, Oregon: 43.966955, -123.056098: : 4/15/2025: Colton Veltkamp: 15 Apr 2025 ; Coordinate Uncertainty in Meters: 27411.00000.

Lane, Oregon: 43.831858, -123.183816: : 4/15/2025: Colton Veltkamp: 15 Apr 2025 ; Coordinate Uncertainty in Meters: 27411.00000.

Douglas, Oregon: 42.850782, -123.736992: : 9/13/2025: Andrew Pauly: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 27568.00000.

Blaine, Idaho: 43.23452, -113.521888: : 9/18/2025: Amy Alverson: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: another!!; Coordinate Uncertainty in Meters: 3.00000.

Bannock, Idaho: 42.74823, -112.388877: : 5/13/2026: wendywendywendy: 13 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Crook, Oregon: 43.987426, -120.105198: : 5/16/2026: Justin Altemus: 16 May 2026 ; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: baby; Coordinate Uncertainty in Meters: 27411.00000.

Josephine, Oregon: 42.709615, -123.429621: : 3/17/2026: Mark Leppin: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 27599.00000.

Owyhee, Idaho: 43.107258, -116.712251: : 3/26/2026: Charlie Justus: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Owyhee, Idaho: 43.108859, -116.345714: : 4/9/2026: Charlie Justus: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Owyhee, Idaho: 43.069725, -116.266973: : 4/9/2026: Charlie Justus: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Elmore, Idaho: 43.099083, -116.207203: : 4/9/2026: Charlie Justus: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Ada, Idaho: 43.352612, -116.25216: : 4/9/2026: Charlie Justus: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 27505.00000.

Owyhee, Idaho: 43.001978, -116.37796: : 4/9/2026: Charlie Justus: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Occurrence Remarks: Pics 1 & 2 in situ, then after awhile they repositioned as seen in 3-6; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: Shiver me timbers; Coordinate Uncertainty in Meters: 27630.00000.

Occurrence Remarks: Aggghhh!!!!; Coordinate Uncertainty in Meters: 27505.00000.

Owyhee, Idaho: 43.180772, -116.971253: : 6/7/2025: Wilson Colby: 7 Jun 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Owyhee, Idaho: 42.61395, -117.006806: : 6/3/2025: Wilson Colby: 3 Jun 2025 ; Coordinate Uncertainty in Meters: 11.00000.

Owyhee, Idaho: 42.833805, -116.77112: : 6/5/2025: Wilson Colby: 5 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Owyhee, Idaho: 42.643192, -116.293717: : 7/5/2025: Wilson Colby: 5 Jul 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: One of the last remaining Crotalus populations in the Willamette Valley. Two individuals here together. Denning snakes briefly observed and photographed and left undisturbed Lane County; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: One small individual. Lane County; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: Likely a brumation site Josephine County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: DOR, exact location didnΓÇÖt save Douglas County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: DOR Malheur County; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: Harney County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: Absolutely stunning one, probably my favorite lute IΓÇÖve seen in Oregon. 78┬░ Harney County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: 73┬░ Harney County; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: 67┬░ Harney County; Coordinate Uncertainty in Meters: 27537.00000.

Occurrence Remarks: DOR Douglas County; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: 73┬░ Douglas County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: 75┬░ Douglas County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: DOR Douglas County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: DOR Josephine County; Coordinate Uncertainty in Meters: 27599.00000.

Occurrence Remarks: 69┬░ Douglas County; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: Oreganus x lutosus intergrade zone. Super cool snake Crook County; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: Location didnΓÇÖt save, close guess. DOR Douglas County; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: Thought this was a little z from the car with that pinkΓÇª73┬░ Douglas County; Coordinate Uncertainty in Meters: 27568.00000.

Occurrence Remarks: Absolutely phenomenal lute but he was HOT and there was a lot of traffic. I wish I got better photos Malheur County; Coordinate Uncertainty in Meters: 27443.00000.

Occurrence Remarks: video screencap.; Coordinate Uncertainty in Meters: 27380.00000.

Madison, Idaho: 43.658347, -111.717063: : 6/3/2026: corvusmack: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Harney, Oregon: 43.269849, -118.99753: : 6/4/2026: Kelly Strickland: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 27505.00000.

Malheur, Oregon: 44.194074, -117.75351: : 6/4/2026: Ruby Andes: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Harney, Oregon: 42.957782, -118.874451: : 6/6/2026: Peter Olsoy: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Harney, Oregon: 43.722811, -119.693531: : 6/8/2026: Elijah Hayes: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 27443.00000.

Occurrence Remarks: Rattlesnake; Coordinate Uncertainty in Meters: 4.00000.

Deschutes, Oregon: 44.311694, -121.121299: : 7/9/2026: opossumqueen: 9 Jul 2026 ; Coordinate Uncertainty in Meters: 27348.00000.

Malheur, Oregon: 42.60653, -117.341694: : 6/17/2026: Clara Oliverson: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 27599.00000.

Malheur, Oregon: 42.977831, -117.292463: : 6/23/2026: Colton Veltkamp: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Crook, Oregon: 44.194704, -120.579911: : 6/24/2026: sara schneider: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Crook, Oregon: 44.096601, -120.404516: : 6/24/2026: sara schneider: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Crook, Oregon: 44.05025, -120.559896: : 6/24/2026: sara schneider: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Occurrence Remarks: Picked it up with my radio telemetry antenna that I was using for sage grouse tracking; Coordinate Uncertainty in Meters: 27599.00000.

Malheur, Oregon: 42.558867, -117.269282: : 6/25/2026: Colton Veltkamp: 25 Jun 2026 ; Coordinate Uncertainty in Meters: 27630.00000.

Lake, Oregon: 42.59674, -119.624382: : 6/18/2026: Merrill Peterson: 18 Jun 2026 ; Coordinate Uncertainty in Meters: 27630.00000.

Owyhee, Idaho: 42.83803, -116.707895: : 6/26/2026: Derek Tilley: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Owyhee, Idaho: 43.15758, -116.350808: : 6/26/2026: Charlie Justus: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Occurrence Remarks: Juvenile Western Rattlesnake found before sunset on S Slope Rd between Pearl, ID and Rock Creek Ranch.; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4936305557; Occurrence Remarks: Crotalus oreganus lutosus under Chrysothamnus viscidiflorus, green rabbitbrush, during 2011 in sagebrush steppe that burned during 1993. Great Basin rattlesnakes apparently prosper in post-fire sagebrush steppe where Chrysothamnus viscidiflorus predominates. This site lies north of highway 20 off Taylor Blvd in the Idaho National Laboratory, Bingham County, Idaho. This upland clay flat is relatively plant species poor compared to other post-fire sagebrush settings. [RD20 near MFC.];; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4936233873; Occurrence Remarks: Ericameria nauseosa, yellow rabbitbrush does not often grown along roadsides except along the north end of Lincoln Blvd, Idaho National Laboratory, Butte County, Idaho. This is an indication of the stability of this roadside vegetation due to its relative remoteness. In the second photo, a Great Basin rattlesnake at center lies among a stand of the native rhizomatous thickspike wheatgrass, Agropyron dasystachyum. The native forbs Astragalus lentiginosus var. salinus, Astragalus geyeri, and Machaeranthera canescens are common at this site.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4937150917; Occurrence Remarks: Great Basin rattlesnake in black sagebrush steppe. Black sagebrush, Artemisia nova, is common at the south end of the Lemhi Range in the Idaho National Laboratory, Butte County. The Great Basin rattlesnake, Crotalus oreganus ssp. lutosus, also occurs in this low statured sagebrush steppe, just as it does in the surrounding lowlands in Wyoming big sagebrush steppe of the Idaho National Laboratory.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1838022330; Occurrence Remarks: Large meal in belly. The snake never attempted to strike, despite the intrusion of handling and photographing.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 3712597888; Occurrence Remarks: Great Basin Rattlesnake (Crotalus oreganus lutosus), Ada County, Idaho;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3764121064; Occurrence Remarks: 72 degrees 20 mph wind only snake up at den;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1839235460; Occurrence Remarks: 2 Found Dead;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 3859599396; Occurrence Remarks: Smith Rock State Park;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 1847460362; Occurrence Remarks: small adult with no rattle moving across road;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 3873622090; Occurrence Remarks: Healthy neonate found around 11pm.;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 3903197671; Occurrence Remarks: The location shown is not even close. This rattlesnake was seen along the trail in Lydle Gulch. The date is also wrong. Seen on May 17, 2022 at about 10 am. DonÆt know how to correct those things.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3915632323; Occurrence Remarks: Found this about 150 feet from the very peak of SpencerÆs butte. On the edge of a cliff underneath the large rocks on the south side slope. The GPS co-ordinance that I tagged might not be the exact location, I was having a hard time figuring out where the mountain was on the screen. I think this find is useful because rattlesnakes are said to be long eradicated in this area. I went there to check because I heard rumors that they were still up there. While trailblazing on the side of the cliff I noticed a big rock and said.. ôif I were a rattlesnake, IÆd go under that rock.ö Sure enough, there it was!;; Coordinate Uncertainty in Meters: 27411.00000.

GBIFID: 3994278048; Occurrence Remarks: On sunny Fall or Spring days they sometimes sun themselves just outside of their den entrance.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4018114020; Occurrence Remarks: Date is approximate.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 4022176501; Occurrence Remarks: In the blue;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 1899768588; Occurrence Remarks: Little one just coming out. Sadly it looks like the hibernacula has been damaged.;; Coordinate Uncertainty in Meters: 27411.00000.

GBIFID: 1899770889; Occurrence Remarks: Recording of rattling and habitat photo. Under rock.;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 4112106294; Occurrence Remarks: slipped into a hole when I tried to get a better look.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4112098213; Occurrence Remarks: 2 of 2;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4111802266; Occurrence Remarks: 1 of 2 snakes;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4120926886; Occurrence Remarks: Better px added.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4126891054; Occurrence Remarks: Large great basin rattlesnake;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1913202333; Occurrence Remarks: Temperature ~50F;; Coordinate Uncertainty in Meters: 176111.00000.

GBIFID: 4134084308; Occurrence Remarks: Found hiding in rock outcropping, facing west. It might have had a food bolus but hard to tell. Didnt want to bother it too much.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4138490467; Occurrence Remarks: 2nd of two rattlesnakes spotted on the lower table rock trail before noon. Temperature in the low 80s. Neither snake rattled despite being aware of my presence.;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 4138658853; Occurrence Remarks: Young one, 3-5 rattles. Just wandering through headed towards the river.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 1914220170; Occurrence Remarks: Postpartum mother and babies.;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 4138022203; Occurrence Remarks: On the crawl;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4145655338; Occurrence Remarks: Second image is from Wikipedia showing same markings as one of the images of a Great Basin Rattlesnake;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 1931489497; Occurrence Remarks: Intermountain Bird Observatory Lucky Peak Mountain. 5:10pm in camp near yurt. Watched it go up the hill in employee camping are;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 4171272888; Occurrence Remarks: Very sad to see another snake killed on the road.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4171655569; Occurrence Remarks: Found this poor thing on the trail. Someone went out of their way to kill it. They even cut off the rattle, probably for some stupid trophy. And they didnÆt even move it off the trail, they just left the body there. Yes, Rattlesnakes are dangerous, but they arenÆt looking to attack you. They are an important part of the ecosystem, controlling rodent populations. This wasnÆt self defense, this was disgusting. Sorry to rant.;; Coordinate Uncertainty in Meters: 1650.00000.

GBIFID: 4407563675; Occurrence Remarks: Moved off highway. Sadly had been hit just above the rattle, but I think itÆll be ok. Amazing to see it when it was on 56 degrees Fahrenheit.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4430757583; Occurrence Remarks: Very young. DidnÆt have a rattle.;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4442439750; Occurrence Remarks: 60 degrees hazy sun Unseasonably warm for SW Idaho neonate trying to get a meal before winter??;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4442430976; Occurrence Remarks: 60 degrees hazy sun Unseasonably warm for SW Idaho neonate trying to get a meal before winter??;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978469175; Occurrence Remarks: Juvenile This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 1978468731; Occurrence Remarks: This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 125000.00000.

GBIFID: 1978468807; Occurrence Remarks: This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978468817; Occurrence Remarks: This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 1924236.00000.

GBIFID: 1978468805; Occurrence Remarks: Juvenile. dead on road This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978469112; Occurrence Remarks: Dead on road This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 1353386.00000.

GBIFID: 1978468812; Occurrence Remarks: dead on road This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978469135; Occurrence Remarks: dead, possible intentional persecution This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978828195; Occurrence Remarks: evidence for possible persecution. head removed and left on a rock. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978826215; Occurrence Remarks: Head and rattle cut off. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978826230; Occurrence Remarks: Rattlesnake killed. No rattle. Appears there was an attempt to skin the snake. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 2453073.00000.

GBIFID: 1978826268; Occurrence Remarks: Missing rattle. Not found near road. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 2539137.00000.

GBIFID: 1978826664; Occurrence Remarks: On road. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978826399; Occurrence Remarks: juvenile. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978826648; Occurrence Remarks: Juvenile. Only button, no rattle This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 257991.00000.

GBIFID: 4458403675; Occurrence Remarks: screenshot from a video I took;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 1978865617; Occurrence Remarks: Trapped in a funnel trap This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978865735; Occurrence Remarks: Trapped in a funnel trap This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1978865492; Occurrence Remarks: Trapped in a funnel trap This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1986521299; Occurrence Remarks: Captured in a funnel trap. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 1986521298; Occurrence Remarks: Captured in a funnel trap. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 832627.00000.

GBIFID: 1986521792; Occurrence Remarks: Captured in a funnel trap. This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 4854951168; Occurrence Remarks: Found in a pile of rocks after someone alerted me about it. Buzzed at me, but much less than what IÆm used to from C. viridis. A terrific, unexpected lifer! Jackson County;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 4863760071; Occurrence Remarks: Douglas County Oregon;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 4867993659; Occurrence Remarks: On my hike today, I saw a North American Racer (I think), one Gopher Snake û û and four or five Western Rattlesnakes! How cool is that? I thought I saw one initially, but the ôoneö crawled away, as I saw using my camera ù and there was still one there partially in the sun! Hoo-yah! Then, using my camera, looking for the one that crawled away, I saw three others in some cracks in the rock! Sweet! Ive been wanting to see a Rattlesnake, but I got to see not one, not two, but four or five! Hoo-yah! Recently, also, near the Boise River, I think I saw a Rubber Boa. That seems to be the only thing that fits the coloration in shape and stuff. Video 1: https://youtu.be/UwyvxHsc53Q?si=V_JyHomk3c4PqrH3 Video 2: https://youtu.be/UK1k15p30T8?si=uIqzI24YqVmKXetj Video 3: https://youtu.be/IartKlga-t4?si=h0Pz9hWRB3TH1Pmx;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 4867943218; Occurrence Remarks: On my hike today, I saw a North American Racer (I think), one Gopher Snake û û and four or five Western Rattlesnakes! How cool is that? I thought I saw one initially, but the ôoneö crawled away, as I saw using my camera ù and there was still one there partially in the sun! Hoo-yah! Then, using my camera, looking for the one that crawled away, I saw three others in some cracks in the rock! Sweet! Ive been wanting to see a Rattlesnake, but I got to see not one, not two, but four or five! Hoo-yah! Recently, also, near the Boise River, I think I saw a Rubber Boa. That seems to be the only thing that fits the coloration in shape and stuff. Video 1: https://youtu.be/UwyvxHsc53Q?si=V_JyHomk3c4PqrH3 Video 2: https://youtu.be/UK1k15p30T8?si=uIqzI24YqVmKXetj Video 3: https://youtu.be/IartKlga-t4?si=h0Pz9hWRB3TH1Pmx;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 4868084665; Occurrence Remarks: On my hike today, I saw a North American Racer (I think), one Gopher Snake û û and four or five Western Rattlesnakes! How cool is that? I thought I saw one initially, but the ôoneö crawled away, as I saw using my camera ù and there was still one there partially in the sun! Hoo-yah! Then, using my camera, looking for the one that crawled away, I saw three others in some cracks in the rock! Sweet! Ive been wanting to see a Rattlesnake, but I got to see not one, not two, but four or five! Hoo-yah! Recently, also, near the Boise River, I think I saw a Rubber Boa. That seems to be the only thing that fits the coloration in shape and stuff. Video 1: https://youtu.be/UwyvxHsc53Q?si=V_JyHomk3c4PqrH3 Video 2: https://youtu.be/UK1k15p30T8?si=uIqzI24YqVmKXetj Video 3: https://youtu.be/IartKlga-t4?si=h0Pz9hWRB3TH1Pmx;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 4868057047; Occurrence Remarks: Video: https://youtu.be/mUzDKjDBpxo?si=zbSZjm26EjrSD2PD;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 4872095453; Occurrence Remarks: Terrible images, unfortunately. We had a very clear view of the snake, but it retreated while i was getting my phone out, and i only took a video. These are screen shots. This is the first rattlesnake IÆve seen in the Eugene area, though I know others have seen them.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 4875265924; Occurrence Remarks: This is a different individual than the one found two days earlier, exact same spot;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 4891649314; Occurrence Remarks: Douglas County;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 4892152578; Occurrence Remarks: Douglas County;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 4901081255; Occurrence Remarks: Sorry about the bad picture, it rattled then disappeared quickly.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 4902135655; Occurrence Remarks: This little rattlesnake was only about 6 long.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 2236859410; Occurrence Remarks: Alive on road. Cruising fast, and there was traffic coming so no time for good photos. Gorgeous specimen.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 2236859658; Occurrence Remarks: DOR on dirt road. Three rattlesnakes including this one were seen in that night.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 2236859140; Occurrence Remarks: The snake was heard rattling in a rock pile on this hot afternoon, and after removing a few rocks was seen and crawled into the open for a photo. This guy has seen some better days. He has a healed wound on his back, and what looked to me like a rattle that had been broken off a while back. Gotta love the rifle casing in the background in one of the photos!;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 2236860861; Occurrence Remarks: Late night after a rainstorm. Found on the shoulder of the road and started up a steep hill. Thus the poor photos. Shame, as this was a stunning animal.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 4901335276; Occurrence Remarks: Darker patterns and smaller head;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2236863227; Occurrence Remarks: DOR.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 4903848738; Occurrence Remarks: Screenshot from a video. Unfortunately this guy hustled super quick off the road when we approached Douglas County;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 4909215963; Occurrence Remarks: Moving fast! It was very warm and this guy escaped before I could get a good photo.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 4909004612; Occurrence Remarks: Beautiful little guy Harney County;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 2238837307; Occurrence Remarks: Please IÆd. Seen biking on Fat Tire Trail. aw I while biking was sunning and then ya went down into willows near Water.;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 4945659004; Occurrence Remarks: Roadkill on the Burnt River Canyon Road. Typical rattlesnake roadkill in that it is missing the head and tail.;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 4946021545; Occurrence Remarks: Same as: https://www.inaturalist.org/observations/240403754;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4946122784; Occurrence Remarks: 6 neonates;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 4945897234; Occurrence Remarks: 5 neonates;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 4950526186; Occurrence Remarks: 4 babies using the same perch as last week;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 4952962683; Occurrence Remarks: This yearÆs baby;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 4952966538; Occurrence Remarks: Last yearÆs baby;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 4952587842; Occurrence Remarks: video screenshot;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 4952589538; Occurrence Remarks: video screenshots;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 4954437083; Occurrence Remarks: digesting unknown prey.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 2243009118; Occurrence Remarks: Dead at entrance of hibernacula;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 5063616638; Occurrence Remarks: Alive on road (hardly).;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 5087327752; Occurrence Remarks: Rambunctious juvenile. It was almost continually striking & re-coiling which is rare in my experience (only had 1 other do that). That is also why I noticed it when I was raking gravels nearby for Contia and caught movement in my peripheral. Found near a small hole on a rocky slope. The whole area was shaded when I arrived but the rocks were still nice and warm.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 2265815988; Occurrence Remarks: Neonate basking in a brush pile.;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 2265862568; Occurrence Remarks: Had been escaping the sun under a discarded sweatshirt until a family hiked by and stopped in the shade. Then it moved to better cover beneath the Oak. About 92 degrees and zero clouds;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 5133147588; Occurrence Remarks: First rattlesnake of the season just poking its head out of rocks. Retreated and rattled;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 2269260653; Occurrence Remarks: Found on road. Juvi;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 5133845009; Occurrence Remarks: Two snakes laying side-by-side, 3 rattlesnakes in the last photo;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 2269286631; Occurrence Remarks: DOR.;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 2273217142; Occurrence Remarks: DOR. Collected for data recording by a friend.;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 2273294219; Occurrence Remarks: Juv;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 5154309869; Occurrence Remarks: Pretty fresh DOR;; Coordinate Uncertainty in Meters: 36.00000.

GBIFID: 5154122836; Occurrence Remarks: Pretty fresh DOR;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5167574960; Occurrence Remarks: This female was first observed on April 16, in the same exact location. Behind the clump of grass in front of the hibernaculum;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 5167156367; Occurrence Remarks: Smith Rock SP;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 5167985557; Occurrence Remarks: All, remember to place rocks as you found them when flipping for snakes. Boise Idaho folks, the hibernacula where the three obscured rattlesnakes and 1 whipsnake snake were found today had been completely disturbed. Every small rock and even very large rocks had been moved and not replaced. I didnt see any dead snakes, so it was probably a herper looking to collect a rattlesnake for pet or ......? I dont think it was anyone who is a regular contributor. Thanks Charlie;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 5167217984; Occurrence Remarks: Dead on road. Weather: Clear skies; no rain. Air temp 50F.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 5177205641; Occurrence Remarks: Amazing colors;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 5176934421; Occurrence Remarks: In a rock formation with at least two other individuals.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 5177226870; Occurrence Remarks: Sadly, run over in the road.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 5177344157; Occurrence Remarks: My first in the valley. Subadult.;; Coordinate Uncertainty in Meters: 27411.00000.

GBIFID: 5188084710; Occurrence Remarks: ????????;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 5187610481; Occurrence Remarks: Finally a live one;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 5188426466; Occurrence Remarks: Safely rehomed;; Coordinate Uncertainty in Meters: 97.00000.

GBIFID: 5199089201; Occurrence Remarks: Note to self and all other herpers that see this: before picking up snakes, identify your snake, then identify it a second time before picking it up. I almost made a terrible mistake of picking up this little guy thinking he was a nightsnake before I made sure he wasnt a rattlesnake. Dont worry, Im good and we were able to get this guy off the road safely as well.;; Coordinate Uncertainty in Meters: 27443.00000.

GBIFID: 5198459350; Occurrence Remarks: Area accessed with permission.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 5206484367; Occurrence Remarks: Dor :(;; Coordinate Uncertainty in Meters: 72069.00000.

GBIFID: 5215941310; Occurrence Remarks: ????;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 2311371074; Occurrence Remarks: found coiled under a Juniper in the shade.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 5237858533; Occurrence Remarks: Looked like the legs were a pain to get down... I almost witnessed the whole event. I had found it just as it got the head down. Hiked up a mountain and when I returned it was almost finished. Whole thing took over 2 hours. Looked for any signs of the snakes ambush site, but couldnt find any. Doubtful it scavenged it, the bird looked fresh.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 5238241583; Occurrence Remarks: How do you tell oreganus from lutosus?;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 5237848741; Occurrence Remarks: First thing in the morning. This snake was out crawling about when our paths crossed, which really scared the snake so it went up into a sagebrush. However, it never really rattled.;; Coordinate Uncertainty in Meters: 27474.00000.

GBIFID: 2331909748; Occurrence Remarks: Seen during thunderstorm , found shelter in a burrow under a Juniper.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 2350397849; Occurrence Remarks: Killed by nearby resident.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 2366143705; Occurrence Remarks: Found freshly dead on North Umpqua Highway (Hwy138). Extruded intestinal contents included at least one adult and several young voles; perhaps from a nest.;; Coordinate Uncertainty in Meters: 27505.00000.

GBIFID: 2423117634; Occurrence Remarks: Great Plains Rat snake(Elaphe emoyri) Secondary consumer;; Coordinate Uncertainty in Meters: 616994.00000.

GBIFID: 1272083280; Occurrence Remarks: button rattle last years young/birth;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2423198902; Occurrence Remarks: Juvenile. angry;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 1291082328; Occurrence Remarks: 4 snakes at a den site;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 1453094480; Occurrence Remarks: In lava outcropping;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2529285231; Occurrence Remarks: A dead snake that got hit on the side of the road.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2543028530; Occurrence Remarks: This observation is part of a Boise State University & Idaho Army National Guard reptile research project located at the Morley Nelson Snake River Birds of Prey Conservation Area. Dead on road;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2563631805; Occurrence Remarks: Found in an oreganus/lutosus intergrade zone, so has a mixed blending of characteristics for both subspecies.;; Coordinate Uncertainty in Meters: 27411.00000.

GBIFID: 2574016854; Occurrence Remarks: Road-kill oreganus/lutosus intergrade;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 2573920971; Occurrence Remarks: Found crossing a road in an oreganus/lutosus intergrade zone.;; Coordinate Uncertainty in Meters: 27411.00000.

GBIFID: 2574194233; Occurrence Remarks: Large female basking in evening golden light. Willamette Valley Crotalus populations are dwindling, so exact location for this observation is protectively generalized.;; Coordinate Uncertainty in Meters: 27348.00000.

GBIFID: 2574206225; Occurrence Remarks: Found in an oreganus/lutosus intergrade zone.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 2574293509; Occurrence Remarks: We encountered this young rattler on the road, just after itd bitten a juvenile Beldings ground squirrel. Delusional over-achiever!;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 2574241434; Occurrence Remarks: These ancient photo-vouchers are provided to historically document a Willamette Valley Crotalus population thats now possibly extirpated. The exact location is protectively obscured.;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 2573869777; Occurrence Remarks: Got lucky and saw this rattlesnake bite a collared lizard, and then pull it back under the rock.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 1305144764; Occurrence Remarks: Page Springs State Park, OR;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 2580089218; Occurrence Remarks: Many individuals observed over several days.;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 1453114948; Occurrence Remarks: Found this snake in an area that was burned by the recent Henrys Creek fire. The whole southwest slope had sustained a pretty intense fire.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1323034317; Occurrence Remarks: on route to Lake Abert, birder Steve Dougill spotted this snake ahead in road, and stopped to move it off to the side so it wouldnt be hit by car, but looks like it had already been hit?;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 2620049738; Occurrence Remarks: Sadly killed with a rock by assholes;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 2626652388; Occurrence Remarks: Dont remember the exact location for this one - somewhere on Pocatello BLM land.;; Coordinate Uncertainty in Meters: 60886.00000.

GBIFID: 1453244421; Occurrence Remarks: Found basking in the middle of the road.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 1453287265; Occurrence Remarks: This snake was GORGEOUS. These pictures dont do it any justice.;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 2802815659; Occurrence Remarks: Under bush on roadside.;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 2814286468; Occurrence Remarks: Gopher? Rattler?;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 1455578770; Occurrence Remarks: Shortly after watching some California Towhees I crossed a dry rocky creek bed and stopped along a cow trail to look around. Within 15 seconds or so I heard a sort of rush of wind type sound, something like what I am used to hearing when a bird is descending rapidly, wings bent, kind of whooshing sound. I looked up and around to spot the source of the sound, first looking right, then left, with my head cocked somewhat to the side, and my mind told me that sound was coming from below, not from above, ... which made no sense based on my presumption that the sound was a bird in the air. So I looked down. There, sliding on and past my leather boot was a 2 1/2 foot RATTLESNAKE. As I watched it slide past my boot, making that sound, I could see the rattles trailing behind, and watched it go several feet off the trail. At that point I started taking pictures (not together enough to take the photos when the snake was next to my boot). When the snake was comfortable and somewhat curled up under a shrub, I approached to look at bit more. It gave a short rattle, and that was the only rattle I heard from it. It was probably in the 40s F, and the sun had not yet appeared from behind the clouds, so the snake was probably pretty lethargic. Though, if I would have stepped on it, I have a feeling it would have found some energy reserves. Yikes!;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 1500265684; Occurrence Remarks: Counted 13 buttons on this snake--an old timer.;; Coordinate Uncertainty in Meters: 126.00000.

GBIFID: 2868186732; Occurrence Remarks: Better photos to be posted.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 2992784647; Occurrence Remarks: One of three individuals observed that morning;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 1571170046; Occurrence Remarks: Lake County, Oregon, US;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 1580507978; Occurrence Remarks: We found this rattlesnake in an old mine. I believe the BLM has closed this site to the public now (2917). The snake was quite alert.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 1584435905; Occurrence Remarks: Found dead on dirt road. Apparently it had been run over 1-3 days before. Measurements 71/80 cm. Rattle 4 cm long with 8 sections plus end button.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 1584437426; Occurrence Remarks: Observed on road, photographed, picked up with stick, and let go on side of road.;; Coordinate Uncertainty in Meters: 27568.00000.

GBIFID: 3090649609; Occurrence Remarks: This snake shed its skin just days after this observation.;; Coordinate Uncertainty in Meters: 137345.00000.

GBIFID: 3112882234; Occurrence Remarks: ID confirmed by Alan St. John. Smartphone photo by TJ OSullivan.;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 1668849020; Occurrence Remarks: Observed and photographed by Brian Wehausen. Submitted by Charles R. Peterson.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 3320934293; Occurrence Remarks: alive but somewhat injured. moved to sagebrush off road a ways. local road 35 mph.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3320976329; Occurrence Remarks: bad quality photo but can clearly tell the species.;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 3325523262; Occurrence Remarks: On road. Juvenile;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 3325773344; Occurrence Remarks: On road;; Coordinate Uncertainty in Meters: 27630.00000.

GBIFID: 3325961333; Occurrence Remarks: On road.;; Coordinate Uncertainty in Meters: 27599.00000.

GBIFID: 3328041181; Occurrence Remarks: Dead on side of trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3330533887; Occurrence Remarks: Nearly 5 feet in length;; Coordinate Uncertainty in Meters: 27537.00000.

GBIFID: 3333532462; Occurrence Remarks: Car tracks had circled around it but not on it, someone had clearly stopped intentionally, bashed it on the head, and cut off the rattle.;; Coordinate Uncertainty in Meters: 27380.00000.

GBIFID: 3337907973; Occurrence Remarks: Dead on road in front of the ranger station. Possibly gravid female, but hard to tell.;; Coordinate Uncertainty in Meters: 27568.00000.

Boise, Idaho: 43.692139, -115.915871: : 8/8/2025: Gwen Gallagher: 8 Aug 2025 ; Coordinate Uncertainty in Meters: 27443.00000.

Crook, Oregon: 44.014738, -120.761539: : 7/3/2026: Andrew Pauly: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Occurrence Remarks: Dead on road. Male; Coordinate Uncertainty in Meters: 27474.00000.

Occurrence Remarks: Dead on road. Male.; Coordinate Uncertainty in Meters: 27505.00000.

Occurrence Remarks: On road. Air temp above road: 87F. Weather: Mostly cloudy with occasional very light rain.; Coordinate Uncertainty in Meters: 27630.00000.

Owyhee, Idaho: 43.174477, -116.712691: : 7/5/2026: Riley Frasier: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 27537.00000.

Grant, Oregon: 44.265976, -119.618926: : 8/25/2025: Erik Ertsgaard: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 27348.00000.

Owyhee, Idaho: 43.297362, -116.5234: : 7/8/2026: HisserDude: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 123.00000.

Occurrence Remarks: Great Basin rattlesnake; Coordinate Uncertainty in Meters: 27568.00000.

Jefferson, Idaho: 43.914679, -112.394059: : 9/2/2025: amuldowney: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 27411.00000.

Occurrence Remarks: First baby of the season for me in SW Idaho; Coordinate Uncertainty in Meters: 27505.00000.

Owyhee, Idaho: 43.204916, -116.384776: : 9/4/2025: Charlie Justus: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 27505.00000.

Occurrence Remarks: On road. Neonate. Air temp above road: 80-86F. Weather: Mostly cloudy with occasional very light rain.; Coordinate Uncertainty in Meters: 27630.00000.

Grant, Oregon: 44.520372, -118.960908: : 7/11/2026: Clara Oliverson: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 27317.00000.

Bonneville, Idaho: 43.599983, -111.64193: : 7/12/2026: Taylor S: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Bonneville, Idaho: 43.599983, -111.64193: : 7/12/2026: sammo_west: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Bonneville, Idaho: 43.600047, -111.641533: : 7/12/2026: sammo_west: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 24.00000.

Jefferson, Idaho: 43.934738, -112.275063: : 7/14/2026: riversilt: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Grant, Oregon: 44.111718, -119.553023: : 7/13/2026: Makayla Gilbert: 13 Jul 2026 ; Coordinate Uncertainty in Meters: 27380.00000.

Bannock, Idaho: 42.885494, -112.336857: : 7/16/2026: Charles R. Peterson: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 27568.00000.

Blaine, Idaho: 43.407332, -114.405337: : 9/13/2025: mjdannahower: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 821.00000.

Bonneville, Idaho: 43.606288, -111.629399: : 8/29/2025: amuldowney: 29 Aug 2025 ; Coordinate Uncertainty in Meters: 27443.00000.

Blaine, Idaho: 43.471772, -114.244095: : 7/23/2026: Mark Pollock: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

CAN.2.21.10_1, British Columbia: 49.215446, -119.639396: : 4/4/2026: Mitch Guilderson: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Occurrence Remarks: Under log in dense forest. Was halfway through eating a squirrel when it started rattling.; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: Occurrence Remarks: Very mellow, it had a wound on its belly and was missing its right eyeball.; Coordinate Uncertainty in Meters: 27126.00000.

Okanagan-Similkameen, British Columbia: 49.081508, -119.492146: : 8/4/2025: Sara Bunge: 4 Aug 2025 :
Occurrence Remarks: Occurrence Remarks: Dead on road; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.222851, -119.44465: : 8/11/2025: Sara Bunge: 11 Aug 2025 :
Occurrence Remarks: Occurrence Remarks: Observed dead on road around 9:45 pm on Aug 9, but was unable to photograph, just moved the body off the road. Located it again on Aug 11 morning beside the road; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.246761, -119.760836: : 8/16/2025: Sara Bunge: 16 Aug 2025 :
Occurrence Remarks: Occurrence Remarks: Dead on road; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Occurrence Remarks: Dead on road,; Coordinate Uncertainty in Meters: 26550.00000.

Yakima, Washington: 46.68562, -120.933045: : 10/23/2025: Elliott Gordon: 23 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Chelan, Washington: 48.285488, -120.634003: : 7/23/2026: Maggie: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Spokane, Washington: 47.77138, -117.552658: : 7/24/2026: Michael Funk: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Okanogan, Washington: 48.623692, -120.455917: : 7/24/2026: bminehart: 24 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Chelan, Washington: 47.827757, -120.73506: : 7/25/2026: Zogador: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 244.00000.

Klickitat, Washington: 45.750078, -121.331997: : 7/11/2026: Andrew Pauly: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 27126.00000.

Grant, Washington: 46.93227, -119.949306: : 4/26/2025: Peter Anthony Ricci: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 30.00000.

Okanagan-Similkameen, British Columbia: 49.321786, -119.541995: : 9/2/2025: Aiva Noringseth: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Franklin, Washington: 46.59798, -118.218501: : 9/8/2025: Christopher Lindsey: 8 Sep 2025 ; Coordinate Uncertainty in Meters: 244.00000.

Okanagan-Similkameen, British Columbia: 49.301011, -119.555672: : 9/13/2025: Aiva Noringseth: 13 Sep 2025 :
Occurrence Remarks: the return of Silent Bob (9 rattle scales, none of which she employs; have heard her rattle half-heartedly only once); Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Coil hunting track; Coordinate Uncertainty in Meters: 300.00000.

Okanagan-Similkameen, British Columbia: 49.180422, -119.544568: : 8/26/2020: mattbakken: 26 Aug 2020 :
GBIFID: 3456579888; Occurrence Remarks: -Under car wheel when we opened door -Was striking a lot;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.186519, -119.701738: : 8/25/2020: mattbakken: 25 Aug 2020 :

Okanagan-Similkameen, British Columbia: 49.195489, -119.514638: : 6/18/2023: Miranda: 18 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.095732, -119.664694: : 5/20/2023: Nathan Earley: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.184025, -119.404738: : 8/19/2022: Janelle Bode: 19 Aug 2022 :

Okanagan-Similkameen, British Columbia: 49.255182, -119.560972: : 5/20/2013: Tim Forrester: 20 May 2013 :

Okanagan-Similkameen, British Columbia: 49.083412, -119.58282: : 5/24/2023: Shane Johnson: 24 May 2023 :

Kootenay Boundary, British Columbia: 49.197177, -118.378111: : 6/13/2023: Julia Carr: 13 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.028866, -119.579712: : 6/18/2023: Miranda: 18 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.085116, -119.552274: : 5/25/2023: Shane Johnson: 25 May 2023 :

Okanagan-Similkameen, British Columbia: 49.115137, -119.7566: : 5/20/2023: Abby Hyde: 20 May 2023 :

Unknown, British Columbia: 49.273919, -119.629431: : 5/17/2026: Blaire Smith: 17 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Kittitas, Washington: 46.860814, -120.505775: : 5/30/2026: monarchdavid: 30 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

Yakima, Washington: 46.838142, -120.71848: : 5/31/2026: Kjersti Ringsrud: 31 May 2026 ; Coordinate Uncertainty in Meters: 2877.00000.

Grant, Washington: 46.903719, -119.869631: : 5/23/2026: Garrett Hughes: 23 May 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Occurrence Remarks: Snake Count in the Methow Valley; Coordinate Uncertainty in Meters: 30.00000.

Occurrence Remarks: Snake Count in the Methow Valley; Coordinate Uncertainty in Meters: 41.00000.

Kittitas, Washington: 46.87971, -119.991155: : 5/31/2026: calbob1026: 31 May 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Unknown, British Columbia: 49.21485, -119.431639: : 5/13/2026: soda: 13 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.014012, -119.552401: : 5/14/2026: soda: 14 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.172625, -119.515064: : 5/14/2026: soda: 14 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Walla Walla, Washington: 46.08155, -118.766975: : 4/28/2026: Christopher Lindsey: 28 Apr 2026 ; Coordinate Uncertainty in Meters: 61.00000.

Unknown, Idaho: 46.246497, -117.081235: : 5/6/2026: mtbnaturalist: 6 May 2026 ; Coordinate Uncertainty in Meters: 27031.00000.

Unknown, British Columbia: 49.214603, -119.492924: : 4/16/2026: Kalin Antonio Oca├▒a: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.201788, -119.505617: : 4/16/2026: Kalin Antonio Oca├▒a: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Klickitat, Washington: 45.703285, -120.748169: : 4/21/2026: silversage98: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Klickitat, Washington: 45.708308, -121.309983: : 4/24/2026: Bob Hansen: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Okanogan, Washington: 48.424847, -120.062364: : 4/18/2026: Mark Robinson: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Terrible photo but tip of tail is just visible; Coordinate Uncertainty in Meters: 6.00000.

Jefferson, Oregon: 44.744769, -121.350355: : 11/1/2025: wifeofplaid: 1 Nov 2025 ; Coordinate Uncertainty in Meters: 99890.00000.

Occurrence Remarks: Came across this on the twin tunnels bike and pedestrian trail between Mosier and Hood River.; Coordinate Uncertainty in Meters: 27126.00000.

Occurrence Remarks: Run over this afternoon as I was by around noon and snake was not there. Juvenile.; Coordinate Uncertainty in Meters: 26582.00000.

Benton, Washington: 46.387746, -119.745505: : 5/18/2026: justmarys: 18 May 2026 ; Coordinate Uncertainty in Meters: 166.00000.

Unknown, British Columbia: 49.042724, -119.559274: : 5/17/2026: Steph Brulot-Sawchyn: 17 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: Dead juvenile on side of road, very squished and very dried up. About 5 metres from other DOR juvenile CROR found at same time. So may have been run over the day before.; Coordinate Uncertainty in Meters: 26582.00000.

Chelan, Washington: 47.462337, -120.674583: : 5/18/2026: rmdenton: 18 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Unknown, British Columbia: 49.221141, -119.410985: : 5/13/2026: Marshall Archibald: 13 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Benton, Washington: 46.241825, -119.291108: : 4/19/2026: KC Craven: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Idaho, Idaho: 45.89042, -116.331345: : 5/20/2026: Mack Laverick: 20 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found in the middle of the road, silly fellow. 4, maybe 5 years old if you go by the number of rattles. We helped encourage this guy to find a safer spot to enjoy the sun.; Coordinate Uncertainty in Meters: 26550.00000.

Okanogan, Washington: 48.430764, -120.030617: : 5/8/2026: Logan Part: 8 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Whitman, Washington: 47.084109, -117.922803: : 5/20/2026: RJ Baltierra: 20 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Saved this guy from being run over by a truck, and encouraged him off the road; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.0886, -119.435321: : 5/17/2026: Simone Littledale: 17 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Benton, Washington: 46.241325, -119.33998: : 5/21/2026: tgalhouse: 21 May 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: Found by @oldgrowthearth; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Rescued from fish trap; Coordinate Uncertainty in Meters: 26999.00000.

Occurrence Remarks: Really caught me by surprise, it never made a sound or budged from its spot; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: Small young one; Coordinate Uncertainty in Meters: 2.00000.

Unknown, British Columbia: 49.165464, -119.572374: : 5/14/2026: Justin Chan: 14 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Douglas, Washington: 47.539398, -120.28318: : 5/22/2026: longroch: 22 May 2026 ; Coordinate Uncertainty in Meters: 86.00000.

Sherman, Oregon: 45.36547, -120.594475: : 5/19/2026: Erik Thuesen: 19 May 2026 ; Coordinate Uncertainty in Meters: 27190.00000.

Unknown, British Columbia: 49.250544, -119.641929: : 5/23/2026: hannekeb: 23 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.222903, -119.524589: : 5/23/2026: Mitch Guilderson: 23 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Kittitas, Washington: 46.836494, -120.199263: : 5/23/2026: Yinan Li: 23 May 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Skamania, Washington: 45.703812, -121.706812: : 5/21/2026: nikkeisan01: 21 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Wheeler, Oregon: 44.767396, -120.264312: : 5/22/2026: Colton Veltkamp: 22 May 2026 ; Coordinate Uncertainty in Meters: 27285.00000.

Occurrence Remarks: Very recently hit by car; Coordinate Uncertainty in Meters: 27285.00000.

Wheeler, Oregon: 44.733048, -120.236695: : 5/25/2026: Ken Chamberlain: 25 May 2026 ; Coordinate Uncertainty in Meters: 27285.00000.

Wheeler, Oregon: 44.600369, -120.281536: : 5/25/2026: jeannechamberlain: 25 May 2026 ; Coordinate Uncertainty in Meters: 27285.00000.

Klickitat, Washington: 45.770583, -121.261309: : 5/23/2026: Richard McJimsey: 23 May 2026 ; Coordinate Uncertainty in Meters: 27126.00000.

Klickitat, Washington: 45.735831, -121.316651: : 5/23/2026: Richard McJimsey: 23 May 2026 ; Coordinate Uncertainty in Meters: 9640.00000.

Occurrence Remarks: Run over today, sometime between 1:30 pm -5:30 pm; Coordinate Uncertainty in Meters: 26550.00000.

Wheeler, Oregon: 44.666201, -120.162874: : 5/23/2026: Colton Veltkamp: 23 May 2026 ; Coordinate Uncertainty in Meters: 27285.00000.

Wheeler, Oregon: 44.758092, -120.192592: : 5/23/2026: Colton Veltkamp: 23 May 2026 ; Coordinate Uncertainty in Meters: 27285.00000.

Occurrence Remarks: We heard the rattle and saw that there were 5 beads. We surprised it on the trail.; Coordinate Uncertainty in Meters: 163.00000.

Occurrence Remarks: Snake Count in the Methow Valley; Coordinate Uncertainty in Meters: 4.00000.

Chelan, Washington: 47.632862, -120.559137: : 5/22/2026: herzbergsk: 22 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Douglas, Washington: 47.514978, -119.750122: : 5/7/2026: herzbergsk: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Unknown, British Columbia: 49.189138, -119.518767: : 5/17/2026: Rebecca Reader-Lee: 17 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.236742, -119.41485: : 5/28/2026: Sara Bunge: 28 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Whitman, Washington: 46.635219, -117.374976: : 5/28/2026: RJ Baltierra: 28 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Whitman, Washington: 46.635255, -117.372337: : 5/28/2026: RJ Baltierra: 28 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Rattle seemingly chopped off; Coordinate Uncertainty in Meters: 26550.00000.

Union, Oregon: 45.151678, -117.703883: : 5/29/2026: davetrochlell: 29 May 2026 ; Coordinate Uncertainty in Meters: 27222.00000.

Chelan, Washington: 47.344933, -120.180818: : 5/30/2026: Mark Pollock: 30 May 2026 ; Coordinate Uncertainty in Meters: 26871.00000.

Kittitas, Washington: 46.855, -120.489772: : 5/20/2026: professorblargh: 20 May 2026 ; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4121031755; Occurrence Remarks: Eating a squirrel I think.;; Coordinate Uncertainty in Meters: 6.00000.

Okanagan-Similkameen, British Columbia: 49.195151, -119.724099: : 5/20/2023: John D Reynolds: 20 May 2023 :
GBIFID: 4133747675; Occurrence Remarks: Chopaka East, South Okanagan Grasslands Protected Area, Osoyoos, BC, Canada;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.046876, -119.586034: : 6/5/2023: Angela Huxham: 5 Jun 2023 :

GBIFID: 4111584283; Occurrence Remarks: About a foot and a half long?;; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.122817, -119.671528: : 5/20/2023: Aiva Noringseth: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.203383, -119.640794: : 5/18/2023: Katelyn Michaud: 18 May 2023 :

Okanagan-Similkameen, British Columbia: 49.213598, -119.785995: : 6/14/2021: jefvreys: 14 Jun 2021 :

Chelan, Washington: 47.407228, -120.346313: : 4/30/2025: mlucid: 30 Apr 2025 ; Coordinate Uncertainty in Meters: 18.00000.

Whitman, Washington: 46.636522, -117.377603: : 6/4/2025: Josalyn: 4 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Chelan, Washington: 47.549964, -120.759353: : 8/1/2025: Floyd E. Hayes: 1 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Kittitas, Washington: 46.953663, -119.997772: : 5/2/2026: Alex Sowers: 2 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Okanagan-Similkameen, British Columbia: 49.292228, -119.518042: : 5/26/2022: jefvreys: 26 May 2022 :

Hood River, Oregon: 45.486166, -121.65993: : 4/26/2026: peregryn: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 27158.00000.

Yakima, Washington: 46.620077, -120.628105: : 4/19/2026: krisalynbrown: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 58.00000.

Occurrence Remarks: Absolutely love these guys. Did not expect him just laying across the trail today. Video coming soon on lil hummie; Coordinate Uncertainty in Meters: 41.00000.

Occurrence Remarks: LETS GOOOOOOOOOOOOO; Coordinate Uncertainty in Meters: 27222.00000.

Grant, Washington: 46.939318, -119.887008: : 5/2/2026: sara schneider: 2 May 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Grant, Washington: 46.919489, -119.810171: : 5/2/2026: sara schneider: 2 May 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Kittitas, Washington: 46.856456, -119.974715: : 5/2/2026: sara schneider: 2 May 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Kittitas, Washington: 46.953267, -119.997812: : 5/2/2026: Alex Sowers: 2 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Grant, Washington: 46.89238, -119.940437: : 5/3/2026: festuca59: 3 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

CAN.2.21.14_1, British Columbia: 49.277, -119.765734: : 5/3/2026: Mitch Guilderson: 3 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Kittitas, Washington: 46.851981, -120.487592: : 4/30/2026: jjfeiler: 30 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Benton, Washington: 46.23135, -119.314903: : 5/6/2026: mistermj: 6 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Klickitat, Washington: 45.871688, -121.082686: : 5/2/2026: erinh: 2 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Kittitas, Washington: 46.797444, -120.453806: : 5/9/2026: song_dog: 9 May 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Grant, Washington: 46.901997, -119.947903: : 4/5/2026: Patrick Sowers: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Grant, Washington: 47.035255, -119.957969: : 5/9/2026: Torrey Brownell: 9 May 2026 ; Coordinate Uncertainty in Meters: 26903.00000.

Klickitat, Washington: 45.760421, -121.151079: : 5/10/2026: Keri Carkeek: 10 May 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Okanogan, Washington: 48.506947, -120.224962: : 5/10/2026: Christina Woolf: 10 May 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Okanogan, Washington: 48.534613, -120.257103: : 5/10/2026: Christina Woolf: 10 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Kittitas, Washington: 46.954285, -119.987755: : 5/10/2026: cgeraghty: 10 May 2026 ; Coordinate Uncertainty in Meters: 23.00000.

Klickitat, Washington: 45.7236, -121.285273: : 5/3/2026: maia: 3 May 2026 ; Coordinate Uncertainty in Meters: 27126.00000.

Wasco, Oregon: 45.636438, -121.267407: : 4/6/2026: Kristina Weis: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 27126.00000.

Occurrence Remarks: Juvenile in yard.; Coordinate Uncertainty in Meters: 2.00000.

Kittitas, Washington: 46.954437, -119.98793: : 5/10/2026: Ante Sherry: 10 May 2026 ; Coordinate Uncertainty in Meters: 107.00000.

Unknown, British Columbia: 49.13766, -119.545031: : 5/12/2026: Nathan Earley: 12 May 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: Dead on trail.; Coordinate Uncertainty in Meters: 4.00000.

Grant, Washington: 46.966446, -119.961674: : 4/5/2026: transient: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Sherman, Oregon: 45.281677, -120.905056: : 3/29/2026: Casey Cunningham: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 27190.00000.

Okanagan-Similkameen, British Columbia: 49.276634, -119.590505: : 10/1/2025: hales22: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.279811, -119.503316: : 6/14/2025: faolan_c: 14 Jun 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.300822, -119.556363: : 6/25/2025: faolan_c: 25 Jun 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.228937, -119.408797: : 7/24/2025: faolan_c: 24 Jul 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Grant, Washington: 47.016559, -119.890051: : 5/8/2025: Collier Sparks: 8 May 2025 ; Coordinate Uncertainty in Meters: 26903.00000.

Okanagan-Similkameen, British Columbia: 49.141139, -119.466982: : 5/7/2025: Sara Bunge: 7 May 2025 :
Occurrence Remarks: Injured on road, moved off on its own. Likely would not have survived due to its injuries; Coordinate Uncertainty in Meters: 26582.00000.

Sherman, Oregon: 45.531499, -120.463009: : 6/14/2025: Erik Thuesen: 14 Jun 2025 ; Coordinate Uncertainty in Meters: 27158.00000.

Occurrence Remarks: Klickitat County; Coordinate Uncertainty in Meters: 27126.00000.

Occurrence Remarks: 76┬░ Klickitat County; Coordinate Uncertainty in Meters: 27126.00000.

Okanagan-Similkameen, British Columbia: 49.234819, -119.698871: : 5/17/2025: Cassidy Best: 17 May 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanogan, Washington: 48.500746, -120.096874: : 5/2/2025: e_n_foundathing: 2 May 2025 ; Coordinate Uncertainty in Meters: 26679.00000.

Occurrence Remarks: Super funky pattern and color on this giant! Union County; Coordinate Uncertainty in Meters: 27158.00000.

Idaho, Idaho: 45.34508, -116.410697: : 6/4/2026: Sam Jolly: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Okanogan, Washington: 48.855541, -119.68135: : 6/4/2026: Eli Loftis: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Chelan, Washington: 47.489067, -120.337325: : 6/4/2026: mlucid: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Chelan, Washington: 47.45788, -120.688888: : 6/4/2026: jjfeiler: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Yakima, Washington: 46.621533, -120.637276: : 6/6/2026: brothertrebius: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Adams, Washington: 47.067817, -117.995645: : 6/9/2026: paytont63: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Benton, Washington: 46.380348, -119.432135: : 6/1/2026: monarchdavid: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Kittitas, Washington: 46.956242, -119.987038: : 6/12/2026: Andrew Stevenson: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Spokane, Washington: 47.69583, -117.508415: : 6/5/2026: winahrens: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 2488.00000.

Unknown, British Columbia: 49.12369, -118.272832: : 6/15/2026: brianalynneburch: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: One of five found on the night. Plus 7 gophers and one charina!; Coordinate Uncertainty in Meters: 26935.00000.

Wallowa, Oregon: 45.85085, -117.529914: : 6/15/2026: Matthew Cozart: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 27095.00000.

Asotin, Washington: 46.052578, -117.238053: : 6/15/2026: Matthew Cozart: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Asotin, Washington: 46.007104, -117.362733: : 6/15/2026: Matthew Cozart: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: DOR.; Coordinate Uncertainty in Meters: 27095.00000.

Spokane, Washington: 47.786946, -117.496008: : 6/17/2026: Joe Cooney: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 115.00000.

Chelan, Washington: 47.489033, -120.337538: : 6/4/2026: mlucid: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Run over between 4:30 pm and 9:15 pm today.; Coordinate Uncertainty in Meters: 26582.00000.

Whitman, Washington: 46.616692, -117.324303: : 6/22/2026: mistermj: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Asotin, Washington: 46.052734, -117.238002: : 6/15/2026: Dan Cozart: 15 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Okanogan, Washington: 48.60487, -120.431687: : 6/22/2026: benjalloyd: 22 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Dead on road; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: I spotted this rattlesnake crossing the road, but by the time I had pulled over and grabbed my camera it was in the grass. I stayed back a respectable distance and used a long lens to try to get a picture, but was pretty much guessing where the head was so the pictures arent good, but are a nice record of my first wild rattlesnake. It did give me a warning buzz when I first appeared, to complete the experience.; Coordinate Uncertainty in Meters: 26550.00000.

Whitman, Washington: 46.635972, -117.375275: : 6/29/2026: Marcus Webb: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Whitman, Washington: 47.091752, -117.874334: : 6/29/2026: Dan Cozart: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Whitman, Washington: 47.157729, -117.815282: : 6/29/2026: Matthew Cozart: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 26903.00000.

Wasco, Oregon: 45.432842, -121.312979: : 6/30/2026: madamvonsassypants: 30 Jun 2026 ; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.211201, -119.591982: : 10/3/2025: Arial Eatherton: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.247372, -119.722023: : 10/9/2025: Mitch Guilderson: 9 Oct 2025 :
Occurrence Remarks: Somewhat abberant neonate with albino sibling.; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.070421, -119.534985: : 10/11/2025: Adam Ninan: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.0813, -119.56988: : 8/26/2020: mattbakken: 26 Aug 2020 :
GBIFID: 3455919220; Occurrence Remarks: Largest iÆve seen;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.212544, -119.710898: : 6/26/2020: mattbakken: 26 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.197541, -119.484206: : 6/17/2021: Liam Singh: 17 Jun 2021 :

GBIFID: 3759289825; Occurrence Remarks: This den site no longer exists, having been destroyed by a quarry operation.;; Coordinate Uncertainty in Meters: 27285.00000.

Okanogan, Washington: 48.424828, -120.062355: : 4/18/2026: Mark Robinson: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Okanagan-Similkameen, British Columbia: 49.289969, -119.488547: : 5/25/2022: Ben Weatherley: 25 May 2022 :

Okanagan-Similkameen, British Columbia: 49.002632, -119.46847: : 6/21/2022: Terry M: 21 Jun 2022 :
GBIFID: 3860248911; Occurrence Remarks: Luckily, this guy gave me a rattle before I stepped near it;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 3859775630; Occurrence Remarks: Unfortunately couldnÆt pop the grate off and see the top of it since the property owner wasnÆt present. Long dead and dried out.;; Coordinate Uncertainty in Meters: 35.00000.

Okanagan-Similkameen, British Columbia: 49.263772, -119.560279: : 7/6/2022: lukabevanda: 6 Jul 2022 :

GBIFID: 1847567893; Occurrence Remarks: Looks to have been killed by a person :(;; Coordinate Uncertainty in Meters: 27126.00000.

GBIFID: 1847577236; Occurrence Remarks: Living near bunkhouse.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 3881475710; Occurrence Remarks: Family Viperidae. Lower Deschutes River, Oregon.;; Coordinate Uncertainty in Meters: 27158.00000.

GBIFID: 3881572741; Occurrence Remarks: Rattled as I took the pictures. There was a smaller rattlesnake to the lower right of this one but couldnÆt get a good picture due to thick grass;; Coordinate Uncertainty in Meters: 163.00000.

Okanagan-Similkameen, British Columbia: 49.026314, -119.688592: : 7/30/2022: Cameron Eckert: 30 Jul 2022 :

Okanagan-Similkameen, British Columbia: 49.068914, -119.436729: : 8/24/2022: maefrank: 24 Aug 2022 :

GBIFID: 3902903176; Occurrence Remarks: Unusually large, about 4 or 5 feet long. Rattling but never coiled so this is a quick shot before it reached the tree skirt.;; Coordinate Uncertainty in Meters: 0.11000.

Okanagan-Similkameen, British Columbia: 49.045442, -119.457756: : 8/27/2022: joanneop: 27 Aug 2022 :
GBIFID: 3902888077; Occurrence Remarks: Mt. Kobau; South Okanagan Grasslands Protected Area;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 3903189975; Occurrence Remarks: 4 segments on rattle;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1880507342; Occurrence Remarks: Small rattlesnake, hiding under the leg of the chair on our back porch.;; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 1880509351; Occurrence Remarks: Tucked in under the bird feeder...;; Coordinate Uncertainty in Meters: 2.00000.

Okanagan-Similkameen, British Columbia: 49.222945, -119.740054: : 9/20/2022: Katelyn Michaud: 20 Sep 2022 :

GBIFID: 3925342647; Occurrence Remarks: Updated to show Osoyoos BC;; Coordinate Uncertainty in Meters: 45044.00000.

GBIFID: 3925141228; Occurrence Remarks: Lost its rattle.;; Coordinate Uncertainty in Meters: 26935.00000.

Okanagan-Similkameen, British Columbia: 49.269555, -119.740087: : 9/18/2022: Sara Bunge: 18 Sep 2022 :

GBIFID: 3947533170; Occurrence Remarks: In the bottom of Black Canyon.;; Coordinate Uncertainty in Meters: 27285.00000.

Okanagan-Similkameen, British Columbia: 49.163164, -119.448527: : 8/31/2013: James Telford: 31 Aug 2013 :

GBIFID: 3994217801; Occurrence Remarks: Hard to see in photo but theres two rattlers here;; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.119506, -119.560556: : 7/17/2018: Leah Ramsay: 17 Jul 2018 :

GBIFID: 4133734518; Occurrence Remarks: Hardy Canyon. Yakima County, Washington State. May 17, 2009.;; Coordinate Uncertainty in Meters: 0.11000.

Grant, Washington: 47.591542, -119.36412: : 4/22/2026: Catileya Thorn: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Okanagan-Similkameen, British Columbia: 49.178153, -119.58836: : 5/15/2013: Tim Forrester: 15 May 2013 :

GBIFID: 4116134145; Occurrence Remarks: Just a baby. It was trying to rattle at me, but its tail didnt have enough rattly bits yet.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121089651; Occurrence Remarks: Flattened, next to road.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4120969978; Occurrence Remarks: Saw rattles. SnakeÆs color looked muted. I think it was dusty.;; Coordinate Uncertainty in Meters: 3.00000.

Okanagan-Similkameen, British Columbia: 49.294703, -119.783729: : 5/20/2023: Liam Ragan: 20 May 2023 :
GBIFID: 4126856424; Occurrence Remarks: Was hiking when I pulled myself up over some scramble and came within a few feet of a rattlesnake which immediately began rattling. Backed away slowly and made this awful recording as I did so before moving out of the area;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 4121248765; Occurrence Remarks: Color in first shot seems more accurate but less detail. Hard to be sure coiled up, but probably 2-3 feet long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4127050348; Occurrence Remarks: Hard to make out in the gif, but it was moving away through the sagebrush. Rattled and made me jump about 10 feet.;; Coordinate Uncertainty in Meters: 68.00000.

Okanagan-Similkameen, British Columbia: 49.1571, -119.456843: : 5/25/2023: smilodonichthys: 25 May 2023 :

Okanagan-Similkameen, British Columbia: 49.176243, -119.590471: : 5/24/2023: smilodonichthys: 24 May 2023 :

Okanagan-Similkameen, British Columbia: 49.105235, -119.547684: : 5/25/2023: Shane Johnson: 25 May 2023 :

Okanagan-Similkameen, British Columbia: 49.119089, -119.421693: : 6/1/2023: Braden J. Judson: 1 Jun 2023 :

GBIFID: 4130173634; Occurrence Remarks: Coiled under a sign post along the river. Cottonwood Canyon State Park.;; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.120658, -119.634787: : 5/20/2023: John D Reynolds: 20 May 2023 :
GBIFID: 4133912308; Occurrence Remarks: Chopaka East, South Okanagan Grasslands Protected Area, Osoyoos, BC, Canada;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 4137920115; Occurrence Remarks: Buzzed at me in the trail then slowly made their way into a bush. ??;; Coordinate Uncertainty in Meters: 4.00000.

Okanagan-Similkameen, British Columbia: 49.248729, -119.603783: : 6/16/2023: Erin Springinotic: 16 Jun 2023 :

GBIFID: 4138433703; Occurrence Remarks: Base of cliff above the Selway River.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4138376010; Occurrence Remarks: Dead 2 days;; Coordinate Uncertainty in Meters: 0.11000.

Okanagan-Similkameen, British Columbia: 49.158023, -119.718235: : 5/20/2023: Nathan Earley: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.102207, -119.625559: : 5/18/2023: Abby Hyde: 18 May 2023 :

Okanagan-Similkameen, British Columbia: 49.299124, -120.079911: : 7/3/2023: Jakob Dulisse: 3 Jul 2023 :

Okanagan-Similkameen, British Columbia: 49.259521, -120.072375: : 7/3/2023: Sachi Snively: 3 Jul 2023 :

Okanagan-Similkameen, British Columbia: 49.145126, -119.572908: : 7/5/2023: Sachi Snively: 5 Jul 2023 :
GBIFID: 4863488522; Occurrence Remarks: Suspected Road kill;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.083622, -119.47418: : 7/5/2023: Jakob Dulisse: 5 Jul 2023 :
GBIFID: 4153581006; Occurrence Remarks: DOR adult;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.075488, -119.65707: : 5/18/2023: Thompson Hyggen: 18 May 2023 :

Okanagan-Similkameen, British Columbia: 49.056754, -119.602695: : 5/20/2023: Thompson Hyggen: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.091118, -119.499302: : 7/17/2023: Jakob Dulisse: 17 Jul 2023 :
GBIFID: 4162617838; Occurrence Remarks: Adult DOR;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.071444, -119.589253: : 7/17/2023: Sachi Snively: 17 Jul 2023 :

GBIFID: 1931488934; Occurrence Remarks: Right next to the trail and rattling;; Coordinate Uncertainty in Meters: 20.00000.

Okanagan-Similkameen, British Columbia: 49.313224, -119.448605: : 7/26/2023: Katelyn Michaud: 26 Jul 2023 :

GBIFID: 1802602376; Occurrence Remarks: a western rattlesnake rattle;; Coordinate Uncertainty in Meters: 27095.00000.

Okanagan-Similkameen, British Columbia: 49.241149, -119.679579: : 7/10/2023: Sean Daniels: 10 Jul 2023 :

Okanagan-Similkameen, British Columbia: 49.236625, -119.478554: : 7/30/2023: Ben Keen: 30 Jul 2023 :

Kootenay Boundary, British Columbia: 49.163888, -118.105385: : 8/3/2023: Jeffrey Jackson: 3 Aug 2023 :

GBIFID: 4177458618; Occurrence Remarks: Found dead in the road;; Coordinate Uncertainty in Meters: 27190.00000.

GBIFID: 4400391075; Occurrence Remarks: Found freshly killed on the road about 9:00 am and moved aside. Inspected and photographed about 3:50 pm at which time margined burying beetles were present in numbers.;; Coordinate Uncertainty in Meters: 0.11000.

Klickitat, Washington: 45.710484, -121.34216: : 8/16/2023: Lee Lynn Michel Thompson: 16 Aug 2023 :

GBIFID: 4407303065; Occurrence Remarks: Dead - looks like a bird kill rather than roadkill.;; Coordinate Uncertainty in Meters: 27126.00000.

Okanagan-Similkameen, British Columbia: 49.123782, -119.639228: : 5/18/2023: Finn McGhee: 18 May 2023 :

Okanagan-Similkameen, British Columbia: 49.186273, -119.7686: : 5/20/2023: Finn McGhee: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.107357, -119.697288: : 9/13/2023: Sara Bunge: 13 Sep 2023 :

Okanagan-Similkameen, British Columbia: 49.020906, -119.526711: : 9/12/2023: Sara Bunge: 12 Sep 2023 :
GBIFID: 4414214015; Occurrence Remarks: Made it safely across road;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 4414295573; Occurrence Remarks: Small one, maybe 2 feet when it crossed trail. Unfortunately it coiled in a hard to photograph spot.;; Coordinate Uncertainty in Meters: 4.00000.

Okanagan-Similkameen, British Columbia: 49.091636, -119.758714: : 5/20/2023: Julia Carr: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.121002, -119.407804: : 6/14/2023: Finn McGhee: 14 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.192096, -119.553728: : 9/23/2023: Briar Hunter: 23 Sep 2023 :

Okanagan-Similkameen, British Columbia: 49.042902, -119.593367: : 9/30/2023: mfarnworth: 30 Sep 2023 :

Kootenay Boundary, British Columbia: 49.008335, -118.380887: : 6/13/2023: Julia Carr: 13 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.028784, -119.489654: : 10/14/2023: Arial Eatherton: 14 Oct 2023 :

GBIFID: 4430665518; Occurrence Remarks: Almost stepped on it running back to my camp in the dark. Id slept under the stars the night before! It slithered off after yelling at it thankfully.;; Coordinate Uncertainty in Meters: 27190.00000.

Okanagan-Similkameen, British Columbia: 49.052514, -119.705975: : 5/18/2023: Aiva Noringseth: 18 May 2023 :
GBIFID: 4430641202; Occurrence Remarks: I spy... (center, slight right) (note to self- fixed location and time);; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 4431155450; Occurrence Remarks: Location and date well documented. Time unknown.;; Coordinate Uncertainty in Meters: 1961.00000.

Okanagan-Similkameen, British Columbia: 49.099023, -119.642118: : 5/20/2023: Aiva Noringseth: 20 May 2023 :

GBIFID: 1949989687; Occurrence Remarks: Yearling found near Lyle, WA. This snake was found by a friend.;; Coordinate Uncertainty in Meters: 613.00000.

Okanagan-Similkameen, British Columbia: 49.023166, -119.491848: : 6/14/2023: Julia Carr: 14 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.137448, -119.618903: : 5/20/2023: Eva Ullstr÷m: 20 May 2023 :

Okanagan-Similkameen, British Columbia: 49.268726, -119.588191: : 9/25/2000: dickcannings: 25 Sep 2000 :

Okanagan-Similkameen, British Columbia: 49.026065, -119.653849: : 5/20/2023: Brian Starzomski: 20 May 2023 :

GBIFID: 1993736819; Occurrence Remarks: Many more records for the region entered into www.naherp.com;; Coordinate Uncertainty in Meters: 27190.00000.

GBIFID: 4936611104; Occurrence Remarks: Going through old photos. Date and location are approximate;; Coordinate Uncertainty in Meters: 26999.00000.

GBIFID: 4936187233; Occurrence Remarks: Going through old photos. Date and location are approximate;; Coordinate Uncertainty in Meters: 26999.00000.

GBIFID: 4936626640; Occurrence Remarks: Going through old photos. Date and location are approximate;; Coordinate Uncertainty in Meters: 26999.00000.

GBIFID: 4936015533; Occurrence Remarks: Nice sized snake. Riled up by previous spooked hikers, not me.;; Coordinate Uncertainty in Meters: 4080.00000.

GBIFID: 2012991286; Occurrence Remarks: Noticed this nice rattler while I was poking around looking for flies. Not sure about the subspecies-- is this C. oreganus oreganus?;; Coordinate Uncertainty in Meters: 200.00000.

Okanagan-Similkameen, British Columbia: 49.26171, -119.735475: : 4/23/2024: Alex Heffernan: 23 Apr 2024 :

Okanagan-Similkameen, British Columbia: 49.282174, -119.675008: : 4/23/2024: Alex Heffernan: 23 Apr 2024 :

Okanagan-Similkameen, British Columbia: 49.213734, -119.631696: : 4/23/2024: Alex Heffernan: 23 Apr 2024 :

Okanagan-Similkameen, British Columbia: 49.000324, -119.411123: : 4/27/2024: Iain Leitch: 27 Apr 2024 :

GBIFID: 4863763029; Occurrence Remarks: Link to video: https://youtu.be/axjlnNR9ANo;; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.190323, -119.437694: : 5/13/2024: lukabevanda: 13 May 2024 :

Okanagan-Similkameen, British Columbia: 49.320586, -119.788449: : 5/9/2024: Darren Kirby: 9 May 2024 :

GBIFID: 4872109065; Occurrence Remarks: Along Ingersoll Road, will add point location after listing other flowers and insects.;; Coordinate Uncertainty in Meters: 310.00000.

Okanagan-Similkameen, British Columbia: 49.244148, -119.479861: : 5/16/2024: Abby Hyde: 16 May 2024 :

GBIFID: 4872138684; Occurrence Remarks: The snake slithered across the trail but I didnÆt get the camera out fast enough. Rattle was clear (and being lightly shaken);; Coordinate Uncertainty in Meters: 5.00000.

Okanagan-Similkameen, British Columbia: 49.307756, -119.416678: : 5/16/2024: John D Reynolds: 16 May 2024 :
GBIFID: 4872328082; Occurrence Remarks: Big one found by @bstarzomski. Vaseux Cliffs Provincial Park, BC, Canada;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.082392, -119.478347: : 5/13/2024: Taylor Justason: 13 May 2024 :

Kootenay Boundary, British Columbia: 49.025503, -118.209574: : 6/1/2024: Ben Keen: 1 Jun 2024 :

Walla Walla, Washington: 46.079819, -118.767432: : 6/1/2024: Christopher Lindsey: 1 Jun 2024 :

Okanagan-Similkameen, British Columbia: 49.25893, -119.413143: : 7/3/2004: Guy Lemelin: 3 Jul 2004 :

GBIFID: 4891683581; Occurrence Remarks: spring baby;; Coordinate Uncertainty in Meters: 213.00000.

GBIFID: 4891950404; Occurrence Remarks: Laura found this snake close to our campsite. By the time I got there, it had crawled under a large Bitterbrush. I was watching this snake through a small window in the bush in my camera, waiting to catch a tongue-flick when it stretched its jaws in a huge Yawn!!;; Coordinate Uncertainty in Meters: 27317.00000.

Okanagan-Similkameen, British Columbia: 49.318158, -119.590247: : 6/12/2024: Katelyn Michaud: 12 Jun 2024 :

GBIFID: 4902093154; Occurrence Remarks: Western Rattlesnake;; Coordinate Uncertainty in Meters: 634.00000.

Okanagan-Similkameen, British Columbia: 49.042893, -119.64571: : 5/18/2024: efarley: 18 May 2024 :

Okanagan-Similkameen, British Columbia: 49.076492, -119.495462: : 5/19/2024: Jack Bindernagel: 19 May 2024 :

GBIFID: 4908025121; Occurrence Remarks: Heard crawling through the grass. Very jumpy guy, who eventually ended up in the crack where those photos were taken. This species always surprises me with their lack of defensive display, and instead almost always trying to get away. Probably the best rattlesnake IÆve ever seen. Absolutely massive and gorgeous, see the third photo for a real demonstration of this guyÆs unbelievable pattern. Klickitat County;; Coordinate Uncertainty in Meters: 27126.00000.

GBIFID: 4908636570; Occurrence Remarks: Klickitat County;; Coordinate Uncertainty in Meters: 27126.00000.

GBIFID: 4909154379; Occurrence Remarks: Klickitat County;; Coordinate Uncertainty in Meters: 27126.00000.

GBIFID: 4908587535; Occurrence Remarks: Integrade Crotalus. Looks mostly lutosus;; Coordinate Uncertainty in Meters: 27285.00000.

Kootenay Boundary, British Columbia: 49.023316, -118.519752: : 7/22/2024: harland_mcknight: 22 Jul 2024 :
GBIFID: 4910677081; Occurrence Remarks: Juvenile about 9 or 10 inches long. Hanging out under the waterfall.;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.008799, -119.498232: : 7/17/2024: luhayes: 17 Jul 2024 :

Kootenay Boundary, British Columbia: 49.133866, -118.593991: : 7/26/2024: harland_mcknight: 26 Jul 2024 :

Kootenay Boundary, British Columbia: 49.144796, -118.5531: : 7/26/2024: harland_mcknight: 26 Jul 2024 :

Okanagan-Similkameen, British Columbia: 49.174593, -119.494109: : 8/3/2024: Mike REVI Boyd: 3 Aug 2024 :

Kootenay Boundary, British Columbia: 49.198327, -118.522523: : 8/8/2024: harland_mcknight: 8 Aug 2024 :
GBIFID: 4923651793; Occurrence Remarks: Individual was living under my trailer. Since I almost stepped on it several times and it was posing a hazard, it was gently guided into a can and safely released just a few hundred meters away.;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 4926346847; Occurrence Remarks: Im really upset about this one. There was someone right behind us when we found this snake so we stopped right over it to let the car behind us pass and ended up running it over as he had moved on us :/;; Coordinate Uncertainty in Meters: 27063.00000.

Okanagan-Similkameen, British Columbia: 49.213889, -119.526335: : 8/27/2024: dickcannings: 27 Aug 2024 :

Okanagan-Similkameen, British Columbia: 49.310718, -119.447178: : 8/27/2024: Aiva Noringseth: 27 Aug 2024 :
GBIFID: 4936683455; Occurrence Remarks: Roadkill :(;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 4945969493; Occurrence Remarks: Was found next to another northern pacific rattlesnake, hidden underneath vines up against a home in a garden bed.;; Coordinate Uncertainty in Meters: 27158.00000.

Okanagan-Similkameen, British Columbia: 49.086416, -119.742102: : 9/2/2024: Hannah Hickli: 2 Sep 2024 :
GBIFID: 4945581687; Occurrence Remarks: lifer found by sharp eyes @aiva :Æ);; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.050496, -119.617194: : 9/2/2024: Blair Dudeck: 2 Sep 2024 :

GBIFID: 4946225957; Occurrence Remarks: Found in the road;; Coordinate Uncertainty in Meters: 5.00000.

Okanagan-Similkameen, British Columbia: 49.223967, -119.446216: : 9/9/2024: Ryan Leys: 9 Sep 2024 :

Okanagan-Similkameen, British Columbia: 49.262985, -119.48099: : 9/7/2024: Aiva Noringseth: 7 Sep 2024 :
GBIFID: 4946078511; Occurrence Remarks: under 1m long;; Coordinate Uncertainty in Meters: 26550.00000.

Kootenay Boundary, British Columbia: 49.061732, -119.257589: : 9/8/2024: Sarah Lamond: 8 Sep 2024 :

Okanagan-Similkameen, British Columbia: 49.169746, -119.415897: : 5/19/2024: Finn McGhee: 19 May 2024 :

Okanagan-Similkameen, British Columbia: 49.037699, -119.68323: : 8/11/2024: Vincent Laurie: 11 Aug 2024 :

Okanagan-Similkameen, British Columbia: 49.021266, -119.510869: : 10/2/2024: stefanie_sassafras: 2 Oct 2024 :

Okanagan-Similkameen, British Columbia: 49.326441, -119.466655: : 5/16/2024: Rebecca Reader-Lee: 16 May 2024 :

Okanagan-Similkameen, British Columbia: 49.18755, -119.559064: : 5/19/2024: Rebecca Reader-Lee: 19 May 2024 :

Okanagan-Similkameen, British Columbia: 49.08383, -119.430542: : 5/19/2024: Rebecca Reader-Lee: 19 May 2024 :

GBIFID: 2244293298; Occurrence Remarks: Photo from a classmate, from our field trip to Yakima;; Coordinate Uncertainty in Meters: 488.00000.

Okanagan-Similkameen, British Columbia: 49.00656, -119.795532: : 5/21/2016: Cole Gaerber: 21 May 2016 :

GBIFID: 2251878412; Occurrence Remarks: Two adults basking in rocky bluff habitat.;; Coordinate Uncertainty in Meters: 26903.00000.

Okanagan-Similkameen, British Columbia: 49.203698, -119.429094: : 5/20/2024: Justin Chan: 20 May 2024 :

Okanagan-Similkameen, British Columbia: 49.334575, -119.668123: : 8/21/2022: averystashko: 21 Aug 2022 :

Okanagan-Similkameen, British Columbia: 49.265438, -119.755718: : 6/1/2006: - Laure Wilson Neish: 1 Jun 2006 :

Okanagan-Similkameen, British Columbia: 49.309292, -119.68157: : 4/22/2007: - Laure Wilson Neish: 22 Apr 2007 :

Okanagan-Similkameen, British Columbia: 49.058964, -119.641912: : 6/2/2019: Nathan Earley: 2 Jun 2019 :

GBIFID: 2252050387; Occurrence Remarks: Fat little one, one button, striped tail and about 12 long.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5140252763; Occurrence Remarks: Rattled at me!!!;; Coordinate Uncertainty in Meters: 254.00000.

Okanagan-Similkameen, British Columbia: 49.030776, -119.50615: : 6/22/2019: Nathan Earley: 22 Jun 2019 :

Kootenay Boundary, British Columbia: 49.119387, -118.40567: : 5/6/2025: jamiechump: 6 May 2025 :

GBIFID: 5154155820; Occurrence Remarks: Lifer! Juvenile, about 10ö long with only a button. Stunningly gorgeous serpent.;; Coordinate Uncertainty in Meters: 26999.00000.

Okanagan-Similkameen, British Columbia: 49.331673, -119.763118: : 5/7/2025: Yusuf Taleb: 7 May 2025 :

GBIFID: 5153935240; Occurrence Remarks: An absolute menace. Subadult, probably 20ö.;; Coordinate Uncertainty in Meters: 26999.00000.

GBIFID: 5154218051; Occurrence Remarks: 6-8 inches long. Saw 2 within 50 feet of eachother.;; Coordinate Uncertainty in Meters: 3.00000.

Okanagan-Similkameen, British Columbia: 49.319207, -119.63731: : 5/4/2024: mayagoecke: 4 May 2024 :

GBIFID: 2283139611; Occurrence Remarks: Poor guy got run over by the truck in front of us. He was still alive when we got it but as you can see, he had no chance of surviving, so we put him out of his misery.;; Coordinate Uncertainty in Meters: 8.00000.

Okanagan-Similkameen, British Columbia: 49.040527, -119.405792: : 5/16/2025: Sean Vanderluit: 16 May 2025 :

GBIFID: 5166954172; Occurrence Remarks: This individual wasnt much bigger than a garter snake, although I briefly saw a much bigger rattlesnake later. Between that and the end of its tail, does that make this one pretty young?;; Coordinate Uncertainty in Meters: 27126.00000.

Okanagan-Similkameen, British Columbia: 49.117414, -119.475194: : 5/19/2025: Sean Vanderluit: 19 May 2025 :

Okanagan-Similkameen, British Columbia: 49.171079, -119.564789: : 5/19/2025: katrineguse: 19 May 2025 :

Okanagan-Similkameen, British Columbia: 49.323927, -119.655126: : 5/17/2025: Braden J. Judson: 17 May 2025 :
GBIFID: 5168346588; Occurrence Remarks: in amphibian crossing tunnel under the road;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.301386, -119.410574: : 5/22/2025: Sean Vanderluit: 22 May 2025 :

Okanagan-Similkameen, British Columbia: 49.317105, -119.652941: : 5/17/2025: Justin Chan: 17 May 2025 :
GBIFID: 5167268698; Occurrence Remarks: spotted by @bradenjudson i believe! same individual: https://inaturalist.ca/observations/282982721;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 5167592317; Occurrence Remarks: Gave a great rattle before crossing the trail!;; Coordinate Uncertainty in Meters: 27285.00000.

Okanagan-Similkameen, British Columbia: 49.303306, -119.656932: : 5/17/2025: Evan Hessels: 17 May 2025 :

GBIFID: 5166948150; Occurrence Remarks: DOR, very fresh hit. Still twitched its rattle at me;; Coordinate Uncertainty in Meters: 27158.00000.

GBIFID: 5168542178; Occurrence Remarks: Dead on trail;; Coordinate Uncertainty in Meters: 27158.00000.

GBIFID: 5176566086; Occurrence Remarks: Killed moments earlier by an uneducated hiker.;; Coordinate Uncertainty in Meters: 65.00000.

Okanagan-Similkameen, British Columbia: 49.076894, -119.547663: : 7/12/2019: Otto Hyink: 12 Jul 2019 :

Okanagan-Similkameen, British Columbia: 49.32408, -119.815666: : 6/12/2025: Tyson Ehlers: 12 Jun 2025 :

GBIFID: 5199216828; Occurrence Remarks: Road kill;; Coordinate Uncertainty in Meters: 34.00000.

Okanagan-Similkameen, British Columbia: 49.096204, -119.489997: : 6/19/2025: Giselle Sterry: 19 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.191044, -119.568281: : 9/9/2024: Taylor Kennedy: 9 Sep 2024 :

GBIFID: 5215825739; Occurrence Remarks: Spotted motionless from a distance in shade around 7pm, tan body with nearly circular dark brown pattern.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 5217437085; Occurrence Remarks: Seen on driveway near gate to old hatchery. It warned us, thankfully, before we got close enough too be bitten. We gave it it distance then it headed for a nearby rock pile and dissappeared;; Coordinate Uncertainty in Meters: 27126.00000.

Okanagan-Similkameen, British Columbia: 49.16511, -119.780903: : 7/1/2025: Sara Bunge: 1 Jul 2025 :

Kootenay Boundary, British Columbia: 49.065281, -118.268499: : 6/13/2025: Sara Bunge: 13 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.20466, -119.479451: : 7/2/2025: Sara Bunge: 2 Jul 2025 :
GBIFID: 5215911387; Occurrence Remarks: Dead on road, near roadside snake fencing;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.285021, -119.609726: : 6/20/2025: Sean Daniels: 20 Jun 2025 :

GBIFID: 5231049042; Occurrence Remarks: Is technically in an intergrade zone but personally the morphological traits that Im seeing here seem to favor Pacific. Things got a little sketchy because he decided to slither under the truck where we couldnt see him, but were successful in getting him off the road.;; Coordinate Uncertainty in Meters: 27222.00000.

GBIFID: 5230437062; Occurrence Remarks: really pretty muted individual. temp was 89.;; Coordinate Uncertainty in Meters: 4.00000.

Kootenay Boundary, British Columbia: 49.031182, -118.51016: : 9/15/2023: kristina_bc: 15 Sep 2023 :
GBIFID: 5230402436; Occurrence Remarks: On the Upper Harpold Trail;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 5230752536; Occurrence Remarks: Nice, cool, evening on the Columbia Plateau trail. At the east end of Amber Lake trail head, we saw this gorgeous Western Rattlesnake.;; Coordinate Uncertainty in Meters: 84.00000.

Okanagan-Similkameen, British Columbia: 49.053959, -119.696653: : 7/11/2025: beekebirder23: 11 Jul 2025 :

GBIFID: 5231108833; Occurrence Remarks: Looks like the head of this rattlesnake was run over by a car;; Coordinate Uncertainty in Meters: 27222.00000.

Okanagan-Similkameen, British Columbia: 49.239181, -120.095808: : 7/15/2025: rundariver: 15 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.321086, -119.639833: : 7/16/2025: Justin Chan: 16 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.115836, -119.463287: : 7/20/2025: Smith Family: 20 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.279215, -119.709424: : 7/16/2025: Thomas Barbin: 16 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.202399, -119.622974: : 7/25/2025: Sara Bunge: 25 Jul 2025 :
GBIFID: 5238267482; Occurrence Remarks: Observed on road, uninjured. Encouraged off road. Juvenile;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 5238416435; Occurrence Remarks: Uninjured on road, encouraged off road. Juvenile;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 5237608655; Occurrence Remarks: Juvenile. Observed on road, uninjured. Encouraged off road.;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.094598, -119.513545: : 5/10/2024: Sara Bunge: 10 May 2024 :
GBIFID: 5237765789; Occurrence Remarks: moved safely off road;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 1265903129; Occurrence Remarks: On property of Richardsons Rock Ranch, west end of Blue Mountains. Trout Creek (trib of Deschutes River) drainage. Snake was ~ 60 cm (2 feet) long.;; Coordinate Uncertainty in Meters: 27285.00000.

Okanagan-Similkameen, British Columbia: 49.158697, -119.5969: : 8/7/2019: Nathan Earley: 7 Aug 2019 :

GBIFID: 1269566397; Occurrence Remarks: The snake was coiled on a dirt road in sagebrush/grassland habitat.;; Coordinate Uncertainty in Meters: 26614.00000.

GBIFID: 2460049285; Occurrence Remarks: Ignore us talking but the rattling sound is indeed the rattlesnake rattling as we prodded him off the road with a stick. Photos of this snake in following link: https://www.inaturalist.org/observations/26480764;; Coordinate Uncertainty in Meters: 27095.00000.

GBIFID: 1273849372; Occurrence Remarks: Rattlesnake on side of Salmon River road above Riggins;; Coordinate Uncertainty in Meters: 46.00000.

GBIFID: 1273849387; Occurrence Remarks: Rattlesnake in Road on Salmon River Road above Riggins Pink background;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2456573379; Occurrence Remarks: Phone photo of the rattlesnake our Natural History of Vertebrates class caught.;; Coordinate Uncertainty in Meters: 122.00000.

Okanagan-Similkameen, British Columbia: 49.288459, -119.603129: : 5/17/2007: Larry Halverson: 17 May 2007 :
GBIFID: 2465148014; Occurrence Remarks: White Lake area. Was using cement guide rails for shelter. Sagebrush grassland surrounded by hills forested with ponderosa pine forest. Elevation 165 meters;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 2574243823; Occurrence Remarks: An island population;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 2574310836; Occurrence Remarks: The location is obscured to protect this northernmost known Crotalus site west of the Cascade Mountains. These two specimens were photo-vouchered in 2008 and are the last rattlesnakes seen there. This observation is posted as a record of a population that possibly no longer exists in the Willamette Valley.;; Coordinate Uncertainty in Meters: 27285.00000.

GBIFID: 2573979935; Occurrence Remarks: Both found crossing the road within 300-feet of each other.;; Coordinate Uncertainty in Meters: 27285.00000.

GBIFID: 2573868395; Occurrence Remarks: Road-kill specimen in an oreganus/lutosus intergrade zone.;; Coordinate Uncertainty in Meters: 27253.00000.

GBIFID: 2580203439; Occurrence Remarks: Crossing road.;; Coordinate Uncertainty in Meters: 26935.00000.

GBIFID: 2580128204; Occurrence Remarks: In drainage.;; Coordinate Uncertainty in Meters: 27063.00000.

GBIFID: 2580196410; Occurrence Remarks: Underneath cover.;; Coordinate Uncertainty in Meters: 27063.00000.

GBIFID: 1315062129; Occurrence Remarks: Driving on WA-129. DOR.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2596154472; Occurrence Remarks: I sat down on the rock before checking for snakes - not the recommended sequence.;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 2596443223; Occurrence Remarks: A very green one.;; Coordinate Uncertainty in Meters: 27253.00000.

GBIFID: 2609197908; Occurrence Remarks: Feathers probably the remains of a meal;; Coordinate Uncertainty in Meters: 488.00000.

Okanagan-Similkameen, British Columbia: 49.060326, -120.02785: : 8/20/2019: Taylor Justason: 20 Aug 2019 :

GBIFID: 1802612736; Occurrence Remarks: First day at Sun Lakes on a field trip and stumbled across C. viridis.;; Coordinate Uncertainty in Meters: 53.00000.

GBIFID: 891753574; Occurrence Remarks: Both ends of the same individual.;; Coordinate Uncertainty in Meters: 27158.00000.

GBIFID: 1453142709; Occurrence Remarks: Alder Springs Trail;; Coordinate Uncertainty in Meters: 27317.00000.

GBIFID: 2619980429; Occurrence Remarks: This is posted for historical purposes to record the species former range in NW Oregons Willamette Valley. I found this photo in a McMinnville newspapers archive. It shows a decapitated Northern Pacific Rattlesnake killed in the Amity Hills during the summer of 1957. Its probably the last verified native Crotalus in Yamhill County prior to total extermination there.;; Coordinate Uncertainty in Meters: 27222.00000.

Okanagan-Similkameen, British Columbia: 49.33328, -119.724861: : 6/12/2020: Lisa Baile: 12 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.093323, -119.771284: : 6/4/2020: Thomas Barbin: 4 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.018878, -119.772704: : 6/4/2020: John D Reynolds: 4 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.134158, -119.472393: : 6/5/2020: John D Reynolds: 5 Jun 2020 :
GBIFID: 2803044087; Occurrence Remarks: Haynes Lease, Okanagan, BC;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.079973, -119.726957: : 6/20/2020: Ben Keen: 20 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.078793, -119.487078: : 5/25/2003: dickcannings: 25 May 2003 :

Okanagan-Similkameen, British Columbia: 49.319546, -119.988622: : 6/25/2020: Cole Gaerber: 25 Jun 2020 :
GBIFID: 2813937832; Occurrence Remarks: Keremeos, BC;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.004085, -119.652684: : 6/4/2020: Brian Starzomski: 4 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.3268, -119.480298: : 6/23/2011: Chris Charlesworth: 23 Jun 2011 :

Okanagan-Similkameen, British Columbia: 49.141286, -119.402814: : 6/5/2020: Brian Starzomski: 5 Jun 2020 :

Okanagan-Similkameen, British Columbia: 49.306425, -119.629997: : 7/15/2019: Kat Milligan: 15 Jul 2019 :
GBIFID: 2814303149; Occurrence Remarks: Found this way;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.065984, -119.474368: : 7/1/2020: Iris Bitterlich: 1 Jul 2020 :
GBIFID: 2818736944; Occurrence Remarks: One of two rattle snakes coiled up about 1 to 2 feet from each other. Heard one of the snakes rattle before it slowly slithered off into a rocky hole in the ground. The day was cool with a few showers. I am assuming they were trying to keep warm and conserve their energy. I wonder why there were two snakes together? Are they social?;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 2823091240; Occurrence Remarks: At Rocky Coulee camping area. It had come out from under a Big sage on the path by the cove, headed toward the picnic/camping area. Very non-aggressive, did not coil or rattle. I let him go on its way undisturbed. Approximately two feet in length.;; Coordinate Uncertainty in Meters: 35.00000.

GBIFID: 2823080179; Occurrence Remarks: Large Northern pacific rattlesnake on road between Lillard Hill and USFS RD 3500.;; Coordinate Uncertainty in Meters: 122.00000.

Okanagan-Similkameen, British Columbia: 49.250577, -119.77277: : 9/24/2008: Michael John Oldham: 24 Sep 2008 :

GBIFID: 2856531767; Occurrence Remarks: On road (alive) and one of the larger ones I have seen of this species (est 3.5-4ft total length).;; Coordinate Uncertainty in Meters: 88.00000.

Okanagan-Similkameen, British Columbia: 49.263733, -119.655873: : 5/15/2018: cfmurrell: 15 May 2018 :

Okanagan-Similkameen, British Columbia: 49.227202, -119.658916: : 5/4/2001: Michael John Oldham: 4 May 2001 :

Okanagan-Similkameen, British Columbia: 49.28917, -119.725025: : 9/19/2020: Alex Bodden: 19 Sep 2020 :

GBIFID: 2898308031; Occurrence Remarks: although there were no visible injuries, the writhing , presence on a road, lack of rattling suggested that it was likely freshly run over;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 1571077595; Occurrence Remarks: On Lyle Cherry Orchard Trail.;; Coordinate Uncertainty in Meters: 857.00000.

Kittitas, Washington: 46.894692, -120.630858: : 4/20/2026: Sandra Ruffner: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2992721625; Occurrence Remarks: One of four individuals basking on a 54f, cloudy day in the morning;; Coordinate Uncertainty in Meters: 27317.00000.

Okanagan-Similkameen, British Columbia: 49.320622, -119.431615: : 7/20/2020: andrewnydam: 20 Jul 2020 :

Okanagan-Similkameen, British Columbia: 49.090894, -119.584497: : 5/11/2017: Ken Olthuis: 11 May 2017 :

GBIFID: 3079867148; Occurrence Remarks: Right next to the paved interpretive trail. Watch your step. ;);; Coordinate Uncertainty in Meters: 0.11000.

Okanagan-Similkameen, British Columbia: 49.132269, -119.785727: : 8/4/2003: Nick Cairns: 4 Aug 2003 :
GBIFID: 3090931377; Occurrence Remarks: Crossing the road;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.17735, -119.77477: : 8/4/2003: Nick Cairns: 4 Aug 2003 :
GBIFID: 3090933325; Occurrence Remarks: Crossing the road;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 3097301240; Occurrence Remarks: Found in some brush in the immediate vicinity of the Wild Horse Monument.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3109321004; Occurrence Remarks: Baby with length of ~ 20 cm.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3118386277; Occurrence Remarks: small baby, near waterfall;; Coordinate Uncertainty in Meters: 2050.00000.

GBIFID: 1024193410; Occurrence Remarks: AKA Gopher Snake;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3118234446; Occurrence Remarks: Was still alive when we stumbled upon him but his guts were hanging out so there was nothing we could do but put him out of his misery.;; Coordinate Uncertainty in Meters: 27095.00000.

Okanagan-Similkameen, British Columbia: 49.238018, -119.780495: : 5/23/2021: dickcannings: 23 May 2021 :

GBIFID: 3302541124; Occurrence Remarks: Chopaka East, South Okanagan Grasslands Protected Area, BC, Canada;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.109353, -119.700574: : 5/21/2021: Brian Starzomski: 21 May 2021 :

Okanagan-Similkameen, British Columbia: 49.155662, -119.524392: : 6/17/2021: Joachim Bertrands: 17 Jun 2021 :

GBIFID: 3325709722; Occurrence Remarks: Found on trail--some loser had killed It and took the rattle.;; Coordinate Uncertainty in Meters: 8.00000.

Okanagan-Similkameen, British Columbia: 49.195483, -119.674771: : 6/19/2021: Sean Daniels: 19 Jun 2021 :

Okanagan-Similkameen, British Columbia: 49.240939, -119.788978: : 6/21/2021: Sean Daniels: 21 Jun 2021 :

GBIFID: 3325521034; Occurrence Remarks: DOR Someone removed the rattle.;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 3325588128; Occurrence Remarks: About 2.5mi from TH on Badger Creek Trail #479;; Coordinate Uncertainty in Meters: 27190.00000.

Okanagan-Similkameen, British Columbia: 49.04043, -119.653686: : 5/21/2021: Lena Dietz Chiasson: 21 May 2021 :

Okanagan-Similkameen, British Columbia: 49.072807, -119.559931: : 7/11/2021: Leah Ramsay: 11 Jul 2021 :
GBIFID: 3330516582; Occurrence Remarks: There were three snakes seen in the undergrowth, one quite large.;; Coordinate Uncertainty in Meters: 26582.00000.

GBIFID: 3330493881; Occurrence Remarks: Juvenile basking near its den. Posted as a historical record, because this Crotalus population is now exterminated. The hibernaculum was totally destroyed after the site became a quarry.;; Coordinate Uncertainty in Meters: 27285.00000.

Okanagan-Similkameen, British Columbia: 49.24831, -119.543335: : 4/29/2015: Sean McCann: 29 Apr 2015 :

Okanagan-Similkameen, British Columbia: 49.288396, -119.441708: : 5/13/2014: Nick Cairns: 13 May 2014 :

GBIFID: 3337666269; Occurrence Remarks: Sleeping in the trail, before making a leisurely retreat into the understory!;; Coordinate Uncertainty in Meters: 27190.00000.

GBIFID: 3338069714; Occurrence Remarks: Parked at the oasis, the spot for vagrant warblers in Union County. Came back two hours later and this buddy was under the front right wheel.;; Coordinate Uncertainty in Meters: 27222.00000.

Okanagan-Similkameen, British Columbia: 49.161722, -119.66638: : 5/21/2021: Ellyne Geurts: 21 May 2021 :

Okanagan-Similkameen, British Columbia: 49.140039, -119.66325: : 5/22/2021: Ellyne Geurts: 22 May 2021 :
GBIFID: 3355214318; Occurrence Remarks: It definitely gave me a good warning haha;; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.287488, -119.670669: : 8/12/2021: chrisalexcross: 12 Aug 2021 :

Okanagan-Similkameen, British Columbia: 49.190746, -119.745704: : 5/21/2021: Jason Headley: 21 May 2021 :

Unknown, British Columbia: 49.119807, -119.551416: : 7/3/2026: Matthew Preece: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Occurrence Remarks: Dead on road; Coordinate Uncertainty in Meters: 26582.00000.

Adams, Washington: 46.879463, -119.207092: : 7/3/2026: Zane Fish: 3 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Okanagan-Similkameen, British Columbia: 49.003936, -119.45972: : 8/14/2025: Candice: 14 Aug 2025 ; Coordinate Uncertainty in Meters: 26582.00000.

Douglas, Washington: 47.959858, -119.659355: : 7/5/2026: ≡ƒæüΓÇì≡ƒù¿Eye-Wandered-Off≡ƒæüΓÇì≡ƒù¿: 5 Jul 2026 :
Occurrence Remarks: Caught, relocated, released.; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Younger snake with just 2-3 buttons on its rattle. Vibrant color with distinct pattern. Possibly recently shed. I passed it on my bike while it was on the trail. It didnt rattle then or when I stopped and approached within 10ft of it for photos. I never get close to these tho and tried not to disturb it.; Coordinate Uncertainty in Meters: 27126.00000.

Whitman, Washington: 46.615588, -117.314392: : 7/6/2026: Marcus Webb: 6 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: DoR; Coordinate Uncertainty in Meters: 26582.00000.

Whitman, Washington: 46.547181, -117.252907: : 7/6/2026: Aidan Hersh: 6 Jul 2026 ; Coordinate Uncertainty in Meters: 123.00000.

Douglas, Washington: 47.578509, -119.84922: : 9/2/2025: kavanaghm: 2 Sep 2025 ; Coordinate Uncertainty in Meters: 26839.00000.

Yakima, Washington: 46.323372, -120.262153: : 6/29/2026: Victor Burgett: 29 Jun 2026 ; Coordinate Uncertainty in Meters: 186.00000.

Unknown, Idaho: 46.335413, -117.037536: : 6/1/2026: mtbnaturalist: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 27031.00000.

Whitman, Washington: 46.699286, -117.245015: : 7/12/2026: Marcus Webb: 12 Jul 2026 ; Coordinate Uncertainty in Meters: 26967.00000.

Unknown, British Columbia: 49.154785, -119.38451: : 7/4/2026: jbradley: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Garfield, Washington: 46.554428, -117.270573: : 7/14/2026: Marcus Webb: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 26999.00000.

Okanagan-Similkameen, British Columbia: 49.194769, -119.468765: : 8/30/2025: Rebecca Reader-Lee: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.13109, -119.40278: : 7/16/2026: archie: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.113856, -119.567974: : 7/16/2026: tom_the_train: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.134986, -119.424476: : 7/16/2026: tom_the_train: 16 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Unknown, British Columbia: 49.095558, -119.624655: : 7/17/2026: rundariver: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.084259, -119.510128: : 5/15/2025: Abby Hyde: 15 May 2025 ; Coordinate Uncertainty in Meters: 26582.00000.

Union, Oregon: 45.481484, -117.986794: : 7/17/2026: Matthew Cozart: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 27158.00000.

Kittitas, Washington: 47.057734, -120.183273: : 7/18/2026: RJ Baltierra: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 26903.00000.

Kittitas, Washington: 46.896239, -120.126998: : 7/18/2026: owennatfreak: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Kittitas, Washington: 46.893485, -120.079142: : 7/18/2026: owennatfreak: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 26935.00000.

Benton, Washington: 46.235813, -119.332445: : 7/18/2026: lauridawn: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Okanogan, Washington: 48.417347, -120.062378: : 7/19/2026: Mark Robinson: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Okanogan, Washington: 48.42458, -120.062378: : 7/19/2026: Mark Robinson: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 7.00000.

Okanagan-Similkameen, British Columbia: 49.165562, -119.453152: : 8/30/2025: Aiva Noringseth: 30 Aug 2025 :
Occurrence Remarks: my first neonate! ~40cm long; Coordinate Uncertainty in Meters: 26582.00000.

Okanagan-Similkameen, British Columbia: 49.060571, -119.525918: : 8/30/2025: David Bell: 30 Aug 2025 ; Coordinate Uncertainty in Meters: 26582.00000.

North Okanagan, British Columbia: 50.363212, -119.304419: : 7/29/2025: Kalin Antonio Oca├▒a: 29 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.38362, -119.950549: : 7/19/2025: Josiah Smith: 19 Jul 2025 :
Occurrence Remarks: Occurrence Remarks: Keremeos, BC, Canada; Coordinate Uncertainty in Meters: 26550.00000.

Thompson-Nicola, British Columbia: 50.294244, -121.302157: : 8/1/2025: Luke Halpin: 1 Aug 2025 :

Occurrence Remarks: Occurrence Remarks: Dead on road; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.409046, -119.494608: : 8/19/2025: Logan J.L. Bradley: 19 Aug 2025 :

Okanagan-Similkameen, British Columbia: 49.396262, -119.462842: : 6/4/2023: Tyler D. Nelson: 4 Jun 2023 :

Okanagan-Similkameen, British Columbia: 49.426878, -119.788577: : 8/5/2022: Alex Bodden: 5 Aug 2022 :

Unknown, British Columbia: 49.501125, -119.403014: : 5/18/2026: Blaire Smith: 18 May 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Occurrence Remarks: Two individuals. Last photo shows one snake on the right and another on the left.; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.64835, -119.472442: : 5/8/2026: jmclatchie: 8 May 2026 ; Coordinate Uncertainty in Meters: 26486.00000.

Occurrence Remarks: Alive and healthy; Coordinate Uncertainty in Meters: 26389.00000.

Unknown, British Columbia: 49.380059, -119.487412: : 4/16/2026: Kalin Antonio Oca├▒a: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Central Okanagan, British Columbia: 49.934864, -119.567514: : 11/10/2025: Julia Housden Proulx: 10 Nov 2025 ; Coordinate Uncertainty in Meters: 26454.00000.

Central Okanagan, British Columbia: 49.967703, -119.48911: : 11/10/2025: FreckLes: 10 Nov 2025 ; Coordinate Uncertainty in Meters: 26454.00000.

Central Okanagan, British Columbia: 49.862429, -119.581743: : 11/10/2025: Vivian: 10 Nov 2025 ; Coordinate Uncertainty in Meters: 26454.00000.

Unknown, British Columbia: 49.377259, -119.614467: : 5/13/2026: Justin Chan: 13 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 50.596253, -121.274759: : 5/19/2026: Anna: 19 May 2026 ; Coordinate Uncertainty in Meters: 26357.00000.

Unknown, British Columbia: 49.380809, -119.697249: : 5/29/2026: Kalin Antonio Oca├▒a: 29 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.405833, -119.508976: : 5/30/2026: faolan_c: 30 May 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 49.779012, -119.785535: : 5/30/2026: Alex Bodden: 30 May 2026 ; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.618631, -119.655462: : 9/14/2022: FreckLes: 14 Sep 2022 :

CAN.2.21.12_1, British Columbia: 49.583134, -119.525155: : 9/27/2025: jacquelinecmills: 27 Sep 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

GBIFID: 3902874843; Occurrence Remarks: Taken near the Cosens Bay parking lot;; Coordinate Uncertainty in Meters: 26389.00000.

Unknown, British Columbia: 50.694774, -120.477778: : 5/2/2026: erin_mac3: 2 May 2026 ; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.640853, -119.695948: : 5/2/2026: bees_kelowna: 2 May 2026 ; Coordinate Uncertainty in Meters: 26486.00000.

Unknown, British Columbia: 49.475175, -119.503382: : 5/11/2026: lukabevanda: 11 May 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 50.028357, -119.366719: : 5/2/2026: Daryl Nolan: 2 May 2026 ; Coordinate Uncertainty in Meters: 26421.00000.

Thompson-Nicola, British Columbia: 50.649893, -120.448669: : 9/4/2025: damontheplantman: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.457976, -119.433554: : 5/11/2026: Taylor Justason: 11 May 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 49.387633, -119.528295: : 5/4/2026: High Chaparral Guesthouse: 4 May 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.463859, -119.429842: : 10/1/2025: olenayyc: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

Central Okanagan, British Columbia: 49.788043, -119.539276: : 10/3/2025: Jonathan Kettle: 3 Oct 2025 ; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.356979, -119.422115: : 6/11/2025: faolan_c: 11 Jun 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Found on road dead, quite upsetting.; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 50.622693, -120.27721: : 6/3/2026: jenthalen: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 26325.00000.

Occurrence Remarks: Snake was not at all happy with me trying to encourage it off the road. But eventually moved off, rattling all the way.; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: This is approximately the 4th rattlesnake Ive seen run over on this corner this year only. I drive this road 5 days a week.; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.356655, -119.585019: : 6/27/2026: Abby Hyde: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.430725, -119.479217: : 9/1/2025: kitt22: 1 Sep 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

Occurrence Remarks: Awesome!; Coordinate Uncertainty in Meters: 26357.00000.

Okanagan-Similkameen, British Columbia: 49.504557, -119.728907: : 10/4/2025: mackbrennan: 4 Oct 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

Okanagan-Similkameen, British Columbia: 49.569337, -119.47228: : 10/7/2025: Johnny Smoke: 7 Oct 2025 :
Occurrence Remarks: Small guy. Looked like only 4 or 5 tail segments; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 49.627288, -119.661802: : 7/1/2026: Mitch Guilderson: 1 Jul 2026 ; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.584141, -119.484908: : 5/12/2013: Gordon Neish: 12 May 2013 :

Central Okanagan, British Columbia: 49.819472, -119.558607: : 11/10/2025: rae_2025: 10 Nov 2025 ; Coordinate Uncertainty in Meters: 26454.00000.

Unknown, British Columbia: 49.418995, -119.571191: : 7/2/2026: katedalgleish: 2 Jul 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Thompson-Nicola, British Columbia: 50.724158, -120.547242: : 9/24/2018: stevethesnakeguy: 24 Sep 2018 :

Thompson-Nicola, British Columbia: 50.734016, -120.500887: : 9/24/2018: stevethesnakeguy: 24 Sep 2018 :

North Okanagan, British Columbia: 50.173369, -119.397424: : 7/15/2021: mariahnatiuk: 15 Jul 2021 :

Okanagan-Similkameen, British Columbia: 49.526514, -119.859174: : 5/29/2005: Denis H Knopp: 29 May 2005 :

Okanagan-Similkameen, British Columbia: 49.555534, -119.435364: : 5/24/2022: Dan Tucker: 24 May 2022 :

North Okanagan, British Columbia: 50.170812, -119.204849: : 5/27/2022: Braden J. Judson: 27 May 2022 :

Central Okanagan, British Columbia: 50.121998, -119.347313: : 5/27/2022: Braden J. Judson: 27 May 2022 :
GBIFID: 3858545039; Occurrence Remarks: Biggest snake I have ever seen.;; Coordinate Uncertainty in Meters: 26421.00000.

Thompson-Nicola, British Columbia: 50.663235, -120.413792: : 7/24/2022: Victor Hooper: 24 Jul 2022 :

Okanagan-Similkameen, British Columbia: 49.392723, -119.688155: : 7/25/2022: lianna_dall: 25 Jul 2022 :

Okanagan-Similkameen, British Columbia: 49.353046, -119.77284: : 5/23/2018: Warren Cronan: 23 May 2018 :

Thompson-Nicola, British Columbia: 50.620933, -120.548007: : 8/8/2022: Jesse BΘrubΘ: 8 Aug 2022 :
GBIFID: 3888752844; Occurrence Remarks: First rattlesnake sighting of the year for me. :) Near Tranquille River. Last photo shows as first sighted.;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 3892461205; Occurrence Remarks: I found a rattlesnake on Aug 8 at nearly the exact same spot & uploaded it to iNaturalist. I figured this was the same specimen when I saw it, but upon closer inspection of the photos & video I have, I now think it is a different snake, so I uploaded it anyway. If you suspect itÆs a duplicate or it should be removed because IÆve already uploaded one from nearly the same location, please let me know & I can delete this observation.;; Coordinate Uncertainty in Meters: 26325.00000.

Central Okanagan, British Columbia: 49.921061, -119.535735: : 7/1/2022: Kalin Antonio Oca±a: 1 Jul 2022 :

Thompson-Nicola, British Columbia: 50.600982, -120.594744: : 9/2/2022: Jesse BΘrubΘ: 2 Sep 2022 :

Thompson-Nicola, British Columbia: 50.616689, -120.58792: : 9/12/2022: Jesse BΘrubΘ: 12 Sep 2022 :

Thompson-Nicola, British Columbia: 50.710808, -120.40862: : 9/13/2022: Jesse BΘrubΘ: 13 Sep 2022 :
GBIFID: 3903648316; Occurrence Remarks: Found dead on road (Tranquille Rd). :(;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 3912461623; Occurrence Remarks: Cougar Canyon Ecological Reserve, North Okanagan, BC;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3915263047; Occurrence Remarks: Cougar Canyon Ecological Reserve, North Okanagan, BC;; Coordinate Uncertainty in Meters: 26421.00000.

Okanagan-Similkameen, British Columbia: 49.672411, -119.527104: : 10/9/2022: Kieran Cox: 9 Oct 2022 :

Central Okanagan, British Columbia: 50.010234, -119.20337: : 5/27/2022: Finn McGhee: 27 May 2022 :

Central Okanagan, British Columbia: 50.139162, -119.398118: : 5/27/2022: Finn McGhee: 27 May 2022 :

Okanagan-Similkameen, British Columbia: 49.514779, -119.644873: : 7/12/2022: Nathan Earley: 12 Jul 2022 :

Okanagan-Similkameen, British Columbia: 49.395382, -119.495164: : 5/17/2021: stvonloe: 17 May 2021 :

GBIFID: 4018271984; Occurrence Remarks: Be careful of Rattlesnakes in the Okanagan;; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.63288, -119.461303: : 4/24/2022: Tyson Ehlers: 24 Apr 2022 :

Central Okanagan, British Columbia: 49.962369, -119.448401: : 7/29/2022: Nathan Earley: 29 Jul 2022 :

Okanagan-Similkameen, British Columbia: 49.40746, -119.757824: : 5/3/2021: Tracy: 3 May 2021 :
GBIFID: 4039439993; Occurrence Remarks: Found by @dickcannings;; Coordinate Uncertainty in Meters: 26518.00000.

Okanagan-Similkameen, British Columbia: 49.484233, -119.461643: : 4/30/2023: lilyfeeback: 30 Apr 2023 :

Okanagan-Similkameen, British Columbia: 49.337559, -119.491187: : 6/9/2013: Tim Forrester: 9 Jun 2013 :

Central Okanagan, British Columbia: 49.849996, -119.593938: : 5/12/2023: Julia Housden Proulx: 12 May 2023 :

Okanagan-Similkameen, British Columbia: 49.655446, -119.796889: : 5/19/2023: Alex Heffernan: 19 May 2023 :
GBIFID: 4120845649; Occurrence Remarks: DOR on Naramata side of OK Mtn;; Coordinate Uncertainty in Meters: 26486.00000.

Central Okanagan, British Columbia: 50.100804, -119.228633: : 5/21/2023: Mio Pelletier: 21 May 2023 :

Okanagan-Similkameen, British Columbia: 49.3475, -119.751467: : 6/6/2023: Miranda: 6 Jun 2023 :

Thompson-Nicola, British Columbia: 50.768489, -120.501114: : 6/7/2023: Jesse BΘrubΘ: 7 Jun 2023 :
GBIFID: 4133999293; Occurrence Remarks: IÆm usually not good at identifying a snake species from a shedded skin, but this one was obvious thanks to the clearly visible pattern.;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 4137884932; Occurrence Remarks: Another shed IÆve found where the rattlesnakeÆs pattern can be seen.;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.545633, -119.531246: : 6/24/2023: Ted Hindmarch: 24 Jun 2023 :
GBIFID: 4138346532; Occurrence Remarks: Skaha Bluffs PP. Along Fortress-diamond Shortloop east-side of ravine on the north loop crossover trail.;; Coordinate Uncertainty in Meters: 26518.00000.

North Okanagan, British Columbia: 50.23924, -119.299529: : 9/29/2018: mystidavina: 29 Sep 2018 :

North Okanagan, British Columbia: 50.232141, -119.249421: : 10/5/2018: Brian Starzomski: 5 Oct 2018 :

Thompson-Nicola, British Columbia: 50.638674, -120.445944: : 7/11/2023: Jedd MacMillan: 11 Jul 2023 :

GBIFID: 4162540704; Occurrence Remarks: Not the best photos. Snake quickly retreated under a rock upon discovery & then kept his head poked out from beneath the rock. Head visible in the first two photos. Last two show shedded skins next to the same rock. Visibly IDÆd the snake before its retreat as an approximately 3 foot long Northern Pacific Rattlesnake. At a location where IÆve spotted rattlesnakes in the past.;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.358331, -119.696382: : 7/10/2023: Sean Daniels: 10 Jul 2023 :

Okanagan-Similkameen, British Columbia: 49.391185, -119.728856: : 7/10/2023: Sean Daniels: 10 Jul 2023 :

Thompson-Nicola, British Columbia: 50.729406, -120.576424: : 8/3/2023: Jesse BΘrubΘ: 3 Aug 2023 :
GBIFID: 4172271519; Occurrence Remarks: Beautiful specimen. Made my day!;; Coordinate Uncertainty in Meters: 26325.00000.

Thompson-Nicola, British Columbia: 50.651053, -121.235929: : 8/4/2023: Jesse BΘrubΘ: 4 Aug 2023 :
GBIFID: 4172210859; Occurrence Remarks: Found DOR. Photo taken early afternoon but I passed the same DOR rattlesnake at approx 07:30 PDT so it was likely struck by a vehicle at night. On Hwy 1 between Cache Creek & the MacAbee Fossil Beds.;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.514027, -119.415768: : 8/8/2023: kerluke: 8 Aug 2023 :

GBIFID: 4177379688; Occurrence Remarks: DidnÆt get very good footage of the little guy as he quickly scurried beneath a concrete barrier, but I had a good look & know for absolute certain that it was a Northern Pacific Rattlesnake. I have a video of it retreating & you can hear his rattle chink as it moves. IÆll come back to this spot again to see if I can get better shots of him in the near future.;; Coordinate Uncertainty in Meters: 26325.00000.

North Okanagan, British Columbia: 50.33169, -119.32387: : 8/10/2023: Creature_Librarian: 10 Aug 2023 :

Okanagan-Similkameen, British Columbia: 49.484005, -119.557486: : 8/15/2023: Alex Bodden: 15 Aug 2023 :

Okanagan-Similkameen, British Columbia: 49.341375, -120.02691: : 8/25/2023: Darren Kirby: 25 Aug 2023 :

North Okanagan, British Columbia: 50.266505, -119.330658: : 8/28/2023: danicaarmstrong: 28 Aug 2023 :
GBIFID: 4405151958; Occurrence Remarks: Dead on side of road - bike ran it over.;; Coordinate Uncertainty in Meters: 26389.00000.

Thompson-Nicola, British Columbia: 50.647847, -120.461297: : 9/7/2023: Chris Fluit: 7 Sep 2023 :

Okanagan-Similkameen, British Columbia: 49.349131, -119.682868: : 9/21/2023: Darren Kirby: 21 Sep 2023 :

Central Okanagan, British Columbia: 49.975785, -119.5343: : 5/23/2018: Kalin Antonio Oca±a: 23 May 2018 :

Okanagan-Similkameen, British Columbia: 49.621523, -119.468742: : 9/19/2006: dickcannings: 19 Sep 2006 :

Central Okanagan, British Columbia: 50.044414, -119.365693: : 5/4/2024: FreckLes: 4 May 2024 :

North Okanagan, British Columbia: 50.253419, -119.240234: : 5/10/2024: anders_jakobsen: 10 May 2024 :

North Okanagan, British Columbia: 50.382897, -119.278679: : 5/13/2024: Erin Springinotic: 13 May 2024 :

North Okanagan, British Columbia: 50.310643, -119.364093: : 5/11/2024: Simone Runyan: 11 May 2024 :

Okanagan-Similkameen, British Columbia: 49.394889, -119.52563: : 5/16/2024: Brian Starzomski: 16 May 2024 :
GBIFID: 4872074870; Occurrence Remarks: Big un;; Coordinate Uncertainty in Meters: 26550.00000.

Thompson-Nicola, British Columbia: 50.787453, -120.427906: : 7/1/2024: Jesse BΘrubΘ: 1 Jul 2024 :

Central Okanagan, British Columbia: 49.964003, -119.596214: : 7/1/2024: caseykeast: 1 Jul 2024 :

Thompson-Nicola, British Columbia: 50.606237, -120.350413: : 7/10/2024: victoriatawa: 10 Jul 2024 :

Thompson-Nicola, British Columbia: 50.68411, -120.459638: : 7/12/2024: Jesse BΘrubΘ: 12 Jul 2024 :
GBIFID: 4908812082; Occurrence Remarks: Absolute unit of a rattlesnake. In the 4-5 foot length range.;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.674453, -119.570457: : 4/20/2019: Tyson Ehlers: 20 Apr 2019 :
GBIFID: 2237504319; Occurrence Remarks: 15-30 individuals newly emerging from den;; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.436698, -119.782127: : 7/17/2024: Tristan Jobin: 17 Jul 2024 :
GBIFID: 4910804309; Occurrence Remarks: Holy hell. Lucky I didnÆt step on it.;; Coordinate Uncertainty in Meters: 26518.00000.

GBIFID: 4921587723; Occurrence Remarks: Shedded skin with a distinct rattlesnake pattern in a place IÆve often found rattlesnakes.;; Coordinate Uncertainty in Meters: 26325.00000.

Central Okanagan, British Columbia: 50.039548, -119.318637: : 7/22/2024: Joshua V. Addesi: 22 Jul 2024 :

GBIFID: 4924005163; Occurrence Remarks: Found this beauty on E Shuswap Rd around 10:30pm PDT. Gently escorted him off the road to safety. This is the first rattlesnake IÆve ever found east of the North Thompson River even though I was aware they were present out there.;; Coordinate Uncertainty in Meters: 26325.00000.

Central Okanagan, British Columbia: 50.109939, -119.367454: : 8/13/2024: Daryl Nolan: 13 Aug 2024 :
GBIFID: 4926195655; Occurrence Remarks: Length estimated to be ~1 m.;; Coordinate Uncertainty in Meters: 26421.00000.

Okanagan-Similkameen, British Columbia: 49.377814, -119.400578: : 8/14/2024: luhayes: 14 Aug 2024 :

Okanagan-Similkameen, British Columbia: 49.457442, -119.487716: : 8/17/2024: Julia Housden Proulx: 17 Aug 2024 :

Okanagan-Similkameen, British Columbia: 49.435945, -121.034649: : 7/20/2024: Smith Family: 20 Jul 2024 :

GBIFID: 4936568693; Occurrence Remarks: As I walked along the trail, I heard its buzzing warning before I saw it.;; Coordinate Uncertainty in Meters: 26389.00000.

Okanagan-Similkameen, British Columbia: 49.396851, -119.78538: : 9/5/2024: Sam Turner: 5 Sep 2024 :

Okanagan-Similkameen, British Columbia: 49.463453, -119.687414: : 7/20/2024: Smith Family: 20 Jul 2024 :

Okanagan-Similkameen, British Columbia: 49.337096, -119.721427: : 9/13/2024: Alex Heffernan: 13 Sep 2024 :
GBIFID: 4945609448; Occurrence Remarks: pretty sure itÆs a rattler, not 100% though;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.361812, -119.642335: : 9/13/2024: Alex Heffernan: 13 Sep 2024 :
GBIFID: 4946209906; Occurrence Remarks: 2 individuals in photo;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.394612, -119.688322: : 9/15/2024: Aiva Noringseth: 15 Sep 2024 :
GBIFID: 4946710630; Occurrence Remarks: Large adult;; Coordinate Uncertainty in Meters: 26550.00000.

GBIFID: 4952388977; Occurrence Remarks: I heard a brief buzz that I didnt recognized from the side of the trail as I passed, so I stopped to investigate. All was quiet for a second, then the full rattle began, and I saw this guy staring back at me. First time Ive encounter one on the trail - and perhaps a little closer than Id like to get! Thompson River canyon south of Ashcroft.;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.581376, -119.545063: : 9/9/2020: isaacs_herps: 9 Sep 2020 :
GBIFID: 4973827637; Occurrence Remarks: Found coming out of a large rock pile at the bottom of a canyon, managed to scoop him up in my net for some pictures;; Coordinate Uncertainty in Meters: 26518.00000.

Okanagan-Similkameen, British Columbia: 49.659822, -119.720935: : 6/17/2019: Maleen Mund: 17 Jun 2019 :

Okanagan-Similkameen, British Columbia: 49.60375, -119.760663: : 6/16/2019: Maleen Mund: 16 Jun 2019 :

Okanagan-Similkameen, British Columbia: 49.699574, -119.74173: : 6/16/2019: Maleen Mund: 16 Jun 2019 :

Okanagan-Similkameen, British Columbia: 49.659961, -119.891961: : 6/16/2019: Tori Miller: 16 Jun 2019 :

Central Okanagan, British Columbia: 49.787831, -119.64831: : 6/16/2019: Tori Miller: 16 Jun 2019 :

Okanagan-Similkameen, British Columbia: 49.722743, -119.706696: : 6/17/2019: Tori Miller: 17 Jun 2019 :

Okanagan-Similkameen, British Columbia: 49.388334, -119.483221: : 5/3/2025: pgkaestner: 3 May 2025 :

Okanagan-Similkameen, British Columbia: 49.38594, -119.492847: : 5/3/2025: dickcannings: 3 May 2025 :

Okanagan-Similkameen, British Columbia: 49.466471, -119.422076: : 5/9/2025: sydbruce: 9 May 2025 :

Okanagan-Similkameen, British Columbia: 49.361906, -119.502842: : 5/22/2025: katrineguse: 22 May 2025 :

Okanagan-Similkameen, British Columbia: 49.470534, -119.575571: : 5/22/2025: Johnny Smoke: 22 May 2025 :
GBIFID: 5168325657; Occurrence Remarks: Small snake, sex unknown. Estimate 50cm long, 5 or 6 rattles.;; Coordinate Uncertainty in Meters: 26518.00000.

Okanagan-Similkameen, British Columbia: 49.378564, -119.794124: : 5/17/2025: Shawn Brescia: 17 May 2025 :

Okanagan-Similkameen, British Columbia: 49.352969, -119.610476: : 5/17/2025: Quillipede: 17 May 2025 :
GBIFID: 5167497932; Occurrence Remarks: Seen by [many people](https://www.inaturalist.org/observations/282982721)! This rattlesnake was briefly a celebrity.;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.642685, -119.537252: : 5/28/2025: Katelyn Michaud: 28 May 2025 :

Okanagan-Similkameen, British Columbia: 49.573398, -119.480726: : 5/23/2025: dityson: 23 May 2025 :

North Okanagan, British Columbia: 50.27169, -119.35145: : 6/1/2025: Layne Geck: 1 Jun 2025 :

North Okanagan, British Columbia: 50.168443, -119.377926: : 5/31/2025: catstonefarms: 31 May 2025 :

Okanagan-Similkameen, British Columbia: 49.345769, -119.795958: : 8/20/2018: Roanan DeMeyer: 20 Aug 2018 :
GBIFID: 4458544372; Occurrence Remarks: Very large rattlesnake, no tag paint on the rattle. White Lake Biodiversity Ranch.;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.466033, -119.561839: : 6/7/2025: Sean Vanderluit: 7 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.614114, -119.612227: : 5/31/2025: ranger_ryan_og: 31 May 2025 :

Okanagan-Similkameen, British Columbia: 49.483931, -119.404051: : 6/8/2025: Sean Vanderluit: 8 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.404333, -119.559051: : 6/7/2025: nfhiker: 7 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.439526, -120.35643: : 6/13/2025: Sue Elwell: 13 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.502437, -119.4671: : 6/7/2025: katrineguse: 7 Jun 2025 :

North Okanagan, British Columbia: 50.23691, -119.2475: : 6/4/2025: kerrieliz: 4 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.437312, -119.464089: : 6/15/2025: igibson: 15 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.344447, -119.526154: : 6/26/2025: andy-nguyen: 26 Jun 2025 :

Okanagan-Similkameen, British Columbia: 49.433426, -119.421663: : 5/21/2025: Jack Bindernagel: 21 May 2025 :

GBIFID: 5231578125; Occurrence Remarks: Sunning on road. About 50cm long;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 5230413113; Occurrence Remarks: SheÆd;; Coordinate Uncertainty in Meters: 26357.00000.

Okanagan-Similkameen, British Columbia: 49.442812, -119.634692: : 7/21/2025: David Bell: 21 Jul 2025 :

Okanagan-Similkameen, British Columbia: 49.364218, -119.77595: : 7/16/2025: Shawn Brescia: 16 Jul 2025 :

Thompson-Nicola, British Columbia: 50.608266, -120.448729: : 10/10/2010: David Robichaud: 10 Oct 2010 :

Okanagan-Similkameen, British Columbia: 49.372707, -119.692055: : 5/21/2016: Bridget Spencer: 21 May 2016 :

Central Okanagan, British Columbia: 49.712851, -119.758502: : 7/25/2019: Tori Miller: 25 Jul 2019 :

GBIFID: 2574277019; Occurrence Remarks: Vaseux Cliffs, BC;; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.37879, -119.654142: : 8/7/2018: Blair Dudeck: 7 Aug 2018 :

Central Okanagan, British Columbia: 50.070459, -119.343629: : 5/18/2020: Aimee Pelletier: 18 May 2020 :

Central Okanagan, British Columbia: 49.780614, -119.602014: : 5/29/2020: Sean Daniels: 29 May 2020 :
GBIFID: 2641526009; Occurrence Remarks: The rattlesnake buzzed its tail and retreated into the rocks. You can hear the rattle in the audio file.;; Coordinate Uncertainty in Meters: 26486.00000.

Okanagan-Similkameen, British Columbia: 49.401228, -119.507223: : 5/27/2020: Sean Daniels: 27 May 2020 :

Central Okanagan, British Columbia: 50.064142, -119.244734: : 7/28/2020: andrewnydam: 28 Jul 2020 :
GBIFID: 3013927515; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road eastbound.;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3014039478; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road southbound.;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.21986, -119.30823: : 6/10/2020: andrewnydam: 10 Jun 2020 :
GBIFID: 3013987476; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road near the parking lot headed northbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014036497; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road southbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3013871476; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road southbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014004485; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road northbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014010471; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road northbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014074485; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road northbound.;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.219292, -119.211087: : 8/6/2019: andrewnydam: 6 Aug 2019 :

GBIFID: 3013908492; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road westbound.;; Coordinate Uncertainty in Meters: 26421.00000.

Central Okanagan, British Columbia: 50.056666, -119.374669: : 8/16/2020: andrewnydam: 16 Aug 2020 :
GBIFID: 3014001493; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road eastbound.;; Coordinate Uncertainty in Meters: 26421.00000.

Central Okanagan, British Columbia: 50.057129, -119.299114: : 8/16/2020: andrewnydam: 16 Aug 2020 :
GBIFID: 3013915497; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen moving along the road southeastbound.;; Coordinate Uncertainty in Meters: 26421.00000.

Central Okanagan, British Columbia: 50.129958, -119.355049: : 8/16/2020: andrewnydam: 16 Aug 2020 :
GBIFID: 3013902489; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road eastbound.;; Coordinate Uncertainty in Meters: 26421.00000.

North Okanagan, British Columbia: 50.23204, -119.219541: : 8/17/2020: andrewnydam: 17 Aug 2020 :
GBIFID: 3014097504; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen coiled beneath some vegetation on the road shoulder.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014102500; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road westbound.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014098472; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). This snake appeared to be injured, it was found coiled in the middle of the road and couldnÆt move normally. Probably struck by a vehicle.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3013891496; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen traveling southbound along road edge.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3014031496; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road westbound;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.258884, -119.289604: : 8/22/2020: Julia Housden Proulx: 22 Aug 2020 :

Central Okanagan, British Columbia: 50.055838, -119.247274: : 9/5/2020: andrewnydam: 5 Sep 2020 :
GBIFID: 3014074501; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). Seen crossing the road westbound.;; Coordinate Uncertainty in Meters: 26421.00000.

Okanagan-Similkameen, British Columbia: 49.366795, -119.737496: : 9/7/2020: Alex Bodden: 7 Sep 2020 :

North Okanagan, British Columbia: 50.206791, -119.225564: : 9/9/2020: andrewnydam: 9 Sep 2020 :
GBIFID: 3014072511; Occurrence Remarks: Northern Pacific Rattlesnake (Crotalus oreganus oreganus). This snake was found trying to cross the road near the parking lot. Traffic was stopped and this pic was taken as it disappeared into the roadside vegetation headed northbound.;; Coordinate Uncertainty in Meters: 26389.00000.

Okanagan-Similkameen, British Columbia: 49.591848, -119.558538: : 9/25/2005: dickcannings: 25 Sep 2005 :

Okanagan-Similkameen, British Columbia: 49.535233, -119.478455: : 5/16/2018: amaya-black: 16 May 2018 :

Okanagan-Similkameen, British Columbia: 49.647325, -119.441514: : 6/24/2019: rosaceae_roberts: 24 Jun 2019 :

North Okanagan, British Columbia: 50.173803, -119.252181: : 4/24/1998: Ken Harris EntSocVic: 24 Apr 1998 :
GBIFID: 3058700086; Occurrence Remarks: Rattlesnake newly emerged from hibernaculum after a long winters sleep;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3124877384; Occurrence Remarks: DOR. Young of previous year.;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.317108, -119.3444: : 5/29/2021: Tori Miller: 29 May 2021 :

GBIFID: 3302457822; Occurrence Remarks: Found on the road with turkey vultures feasting on it;; Coordinate Uncertainty in Meters: 26325.00000.

Thompson-Nicola, British Columbia: 50.763088, -120.57259: : 5/30/2021: blackgoldbc: 30 May 2021 :

Thompson-Nicola, British Columbia: 50.723993, -120.413592: : 6/3/2021: Jesse BΘrubΘ: 3 Jun 2021 :
GBIFID: 3302568404; Occurrence Remarks: Lovely juvenile. Sorry not the best photos.;; Coordinate Uncertainty in Meters: 26325.00000.

North Okanagan, British Columbia: 50.283513, -119.373609: : 6/3/2021: andrewnydam: 3 Jun 2021 :
GBIFID: 3302064772; Occurrence Remarks: AOR. Moved off the road and photographed briefly.;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.391011, -119.379139: : 6/2/2021: andrewnydam: 2 Jun 2021 :

Thompson-Nicola, British Columbia: 50.676355, -120.41592: : 6/5/2021: Victor Hooper: 5 Jun 2021 :
GBIFID: 4936352844; Occurrence Remarks: Juvenile rattle snake spotted while exploring the grasslands. Only had a little button of a rattle.;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 3314422852; Occurrence Remarks: Two rattlesnakes curled up together. Note the shedded skin beside them in one of the photos.;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 3314191238; Occurrence Remarks: Horrible photo, I know. The snake retreated into a safe hiding place before I could take a decent photo. It was a very large specimen with a substantial rattle. I did get video of it rattling as well. Not sure if it will let me upload that.;; Coordinate Uncertainty in Meters: 26325.00000.

GBIFID: 3320839618; Occurrence Remarks: AOR, moved off the road and photographed.;; Coordinate Uncertainty in Meters: 26389.00000.

North Okanagan, British Columbia: 50.209294, -119.322044: : 7/2/2021: andrewnydam: 2 Jul 2021 :

North Okanagan, British Columbia: 50.258, -119.336978: : 7/3/2021: andrewnydam: 3 Jul 2021 :

North Okanagan, British Columbia: 50.328619, -119.318673: : 7/3/2021: andrewnydam: 3 Jul 2021 :

Okanagan-Similkameen, British Columbia: 49.389083, -119.604127: : 7/1/2021: Paul Liu: 1 Jul 2021 :

Central Okanagan, British Columbia: 50.088233, -119.333923: : 7/5/2021: andrewnydam: 5 Jul 2021 :

GBIFID: 3328112634; Occurrence Remarks: AOR. Photo after moving it off the road.;; Coordinate Uncertainty in Meters: 26389.00000.

GBIFID: 3328111669; Occurrence Remarks: AOR. Crap photo, but you can see the banding and a blurry rattle to confirm ID.;; Coordinate Uncertainty in Meters: 26389.00000.

Central Okanagan, British Columbia: 50.067462, -119.397522: : 7/14/2021: andrewnydam: 14 Jul 2021 :
GBIFID: 3328154615; Occurrence Remarks: AOR, photo after moving it off the road;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3328165698; Occurrence Remarks: Injured on road, was hit by a car.;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3328129631; Occurrence Remarks: AOR, photo after moving it off the road.;; Coordinate Uncertainty in Meters: 26421.00000.

GBIFID: 3335360923; Occurrence Remarks: Gently & successfully moved the rattlesnake from a backyard with dogs to a safe spot in the Lac du Bois grasslands about 1km further west.;; Coordinate Uncertainty in Meters: 26325.00000.

Central Okanagan, British Columbia: 50.090802, -119.377811: : 5/27/2021: Erin Springinotic: 27 May 2021 :

Thompson-Nicola, British Columbia: 50.667988, -120.577851: : 9/11/2021: Victor Hooper: 11 Sep 2021 :

Thompson-Nicola, British Columbia: 50.718087, -120.506876: : 9/9/2021: Ted Nanninga: 9 Sep 2021 :

GBIFID: 3399256422; Occurrence Remarks: Appeared to be struck by a vehicle;; Coordinate Uncertainty in Meters: 26325.00000.

Okanagan-Similkameen, British Columbia: 49.390403, -119.784402: : 8/21/2025: obsessedwithslugs: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.393927, -119.507425: : 8/24/2025: Aiva Noringseth: 24 Aug 2025 :
Occurrence Remarks: FOY! Beautiful; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.383373, -119.626893: : 6/26/2026: Nathan Earley: 26 Jun 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Occurrence Remarks: Smaller guy. About 15-18cm long, potentially juvenile; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.36593, -119.631454: : 6/27/2026: Nathan Earley: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.386878, -119.45493: : 10/1/2025: Arial Eatherton: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 26550.00000.

Unknown, British Columbia: 49.430606, -119.625444: : 7/11/2026: dickcannings: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Okanagan-Similkameen, British Columbia: 49.592064, -119.511208: : 5/21/2025: Elora Jane: 21 May 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 49.472567, -119.704583: : 7/11/2026: Syd Cannings: 11 Jul 2026 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 50.604849, -119.99981: : 7/19/2026: jolleeperrier: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 26325.00000.

Unknown, British Columbia: 49.364608, -119.81044: : 7/21/2026: Christian Louie: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 26550.00000.

Okanagan-Similkameen, British Columbia: 49.44984, -119.663754: : 8/31/2025: Alex Bodden: 31 Aug 2025 ; Coordinate Uncertainty in Meters: 26518.00000.

Unknown, British Columbia: 49.42099, -119.402574: : 7/23/2026: c-mansfield: 23 Jul 2026 ; Coordinate Uncertainty in Meters: 26518.00000.