INATURALIST Observations 102727053
Ensenada, Baja California: 28.803091, -113.643387: : 9/19/2004: timoteo_b: 19 Sep 2004 ; Coordinate Uncertainty in Meters: 29558.00000.

INATURALIST Observations 4975070
Ensenada, Baja California: 28.951915, -113.562434: : 4/10/2013: Paul Maier: 10 Apr 2013 ; Coordinate Uncertainty in Meters: 1514.00000.

INATURALIST Observations 126429952
Ensenada, Baja California: 29.528499, -113.97272: : 11/21/2021: ├üngel M├⌐ndez: 21 Nov 2021 ; Coordinate Uncertainty in Meters: 244.00000.

Ensenada, Baja California: 28.978205, -113.546913: : 5/24/2019: Chris Gruenwald Herp.mx: 24 May 2019 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 28.995447, -113.514046: : 7/7/2015: Majo Monteverde Suarez: 7 Jul 2015 ; Coordinate Uncertainty in Meters: 1163.00000.

Ensenada, Baja California: 28.951915, -113.562434: : 4/10/2013: Paul Maier: 10 Apr 2013 ; Coordinate Uncertainty in Meters: 1514.00000.

Ensenada, Baja California: 29.712958, -114.510688: : 3/17/2018: Donna Miller: 17 Mar 2018 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 29.731573, -114.720332: : 10/15/2020: deuno: 15 Oct 2020 ; Coordinate Uncertainty in Meters: 3199.00000.

Ensenada, Baja California: 29.91527, -114.568806: : 5/24/2007: eric_a_dugan: 24 May 2007 ; Coordinate Uncertainty in Meters: 75.00000.

Ensenada, Baja California: 29.750272, -114.7425: : 1/28/2024: Erik Meling: 28 Jan 2024 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 29.770174, -114.580344: : 9/11/2015: Jorge H. Valdez: 11 Sep 2015 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Dormida; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 29.583612, -114.560028: : 4/24/2024: carlfrederick: 24 Apr 2024 ; Coordinate Uncertainty in Meters: 53.00000.

Ensenada, Baja California: 29.745239, -114.741142: : 4/14/2023: Sharon Estrada: 14 Apr 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 30.379531, -114.657308: : 5/31/2025: Ofelia Saraby Sastree Medina: 31 May 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 30.974217, -116.098289: : 4/14/2020: Anny Peralta: 14 Apr 2020 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 30.555876, -114.762959: : 10/1/2016: Benjamin German, MD: 1 Oct 2016 ; Coordinate Uncertainty in Meters: 29356.00000.

Ensenada, Baja California: 30.984403, -116.113372: : 4/26/2020: Jorge H. Valdez: 26 Apr 2020 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 30.97692, -116.0981: : 4/26/2020: Anny Peralta: 26 Apr 2020 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 30.172957, -115.555615: : 3/28/2017: Christian Schwarz: 28 Mar 2017 ; Coordinate Uncertainty in Meters: 535.00000.

Occurrence Remarks: Same individual as https://www.inaturalist.org/observations/5614919; Coordinate Uncertainty in Meters: 5.00000.

Mexicali, Baja California: 30.985262, -115.394308: : 4/29/2018: Mario Horacio Mendoza L├│pez: 29 Apr 2018 ; Coordinate Uncertainty in Meters: 61.00000.

1309; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 30.94745, -115.927895: : 4/6/2026: beccccs: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Ensenada, Baja California: 30.472033, -114.741387: : 6/30/2018: mstepek: 30 Jun 2018 ; Coordinate Uncertainty in Meters: 8.00000.

Ensenada, Baja California: 30.624316, -114.698942: : 4/10/2021: Edna Valenzuela: 10 Apr 2021 ; Coordinate Uncertainty in Meters: 188.00000.

Ensenada, Baja California: 30.0263, -115.000763: : 3/17/2016: zenia: 17 Mar 2016 ; Coordinate Uncertainty in Meters: 11.10000.

Ensenada, Baja California: 30.985686, -115.635339: : 4/19/2023: Jess Mullins: 19 Apr 2023 ; Coordinate Uncertainty in Meters: 5.00000.

Ensenada, Baja California: 30.082897, -114.537003: : 10/14/2021: Sula Vanderplank: 14 Oct 2021 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 30.135336, -114.639497: : 9/30/2016: mtkingdave: 30 Sep 2016 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 12.00000.

General Plutarco Elias Calles, Sonora: 31.893787, -113.36647: : 5/10/2022: Oscar Leonardo Chavez Torres: 10 May 2022 ; Coordinate Uncertainty in Meters: 5.00000.

Puerto Penasco, Sonora: 31.774145, -113.416428: : 11/7/2023: mpailes: 7 Nov 2023 ; Coordinate Uncertainty in Meters: 5.00000.

Puerto Penasco, Sonora: 31.57168, -113.490673: : 5/12/2024: Ivan Eduardo Parra Salazar: 12 May 2024 ; Coordinate Uncertainty in Meters: 1.11000.

Ensenada, Baja California: 31.671083, -116.639961: : 12/19/2023: Jorge Enrique Taylor Curiel: 19 Dec 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Puerto Penasco, Sonora: 31.642224, -113.484971: : 8/20/2005: Lin Piest: 20 Aug 2005 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.977708, -116.134811: : 3/22/2020: Erik Meling: 22 Mar 2020 ; Coordinate Uncertainty in Meters: 11.00000.

Ensenada, Baja California: 31.977783, -116.134787: : 3/22/2020: Cristian A. D. Meling L.: 22 Mar 2020 ; Coordinate Uncertainty in Meters: 2.00000.

General Plutarco Elias Calles, Sonora: 31.891436, -113.366377: : 4/1/2021: Caminantes del Desierto: 1 Apr 2021 ; Coordinate Uncertainty in Meters: 278.00000.

Puerto Penasco, Sonora: 31.776292, -113.447925: : 4/9/2021: Miguel Grageda: 9 Apr 2021 ; Coordinate Uncertainty in Meters: 244.00000.

Ensenada, Baja California: 31.042115, -115.731263: : 4/5/2022: Jeff Alvarez: 5 Apr 2022 ; Coordinate Uncertainty in Meters: 1158.00000.

Ensenada, Baja California: 31.04182, -115.733362: : 4/5/2022: browngirlbiologist: 5 Apr 2022 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.11935, -115.968536: : 1/21/2021: Jorge H. Valdez: 21 Jan 2021 ; Coordinate Uncertainty in Meters: 10.00000.

Ensenada, Baja California: 31.168134, -115.593913: : 4/30/2018: Jorge H. Valdez: 30 Apr 2018 ; Coordinate Uncertainty in Meters: 0.11000.

Puerto Penasco, Sonora: 31.776045, -113.499388: : 9/29/2023: F. Gual-Suarez: 29 Sep 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Unknown, Baja California: 31.691372, -116.651808: : 4/18/2026: Jorge Enrique Taylor Curiel: 18 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Baja California: 31.704286, -116.674636: : 3/30/2026: Jorge Enrique Taylor Curiel: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4978305119;; Coordinate Uncertainty in Meters: 75.00000.

Ensenada, Baja California: 31.738553, -115.893758: : 1/30/2021: Cristian A. D. Meling L.: 30 Jan 2021 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 31.738775, -115.893622: : 1/30/2021: Erik Meling: 30 Jan 2021 ; Coordinate Uncertainty in Meters: 4.00000.

Ensenada, Baja California: 31.892889, -116.411664: : 10/9/2022: Cristian A. D. Meling L.: 9 Oct 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 31.0708, -114.988083: : 4/5/2021: Jim Riley: 5 Apr 2021 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Estaba dormida; Coordinate Uncertainty in Meters: 2777.00000.

Ensenada, Baja California: 31.043568, -115.574809: : 9/9/2024: Jose Hiram Licona Hern├índez: 9 Sep 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 31.24224, -115.417843: : 4/28/2019: Tim Warfel: 28 Apr 2019 ; Coordinate Uncertainty in Meters: 29252.00000.

Mexicali, Baja California: 31.215388, -115.39199: : 4/28/2019: Tim Warfel: 28 Apr 2019 ; Coordinate Uncertainty in Meters: 29252.00000.

Puerto Penasco, Sonora: 31.57164, -113.490776: : 5/12/2024: Irma Cordova: 12 May 2024 ; Coordinate Uncertainty in Meters: 57.00000.

Puerto Penasco, Sonora: 31.647658, -113.480788: : 5/17/2023: F. Gual-Suarez: 17 May 2023 ; Coordinate Uncertainty in Meters: 14.00000.

Ensenada, Baja California: 31.017154, -115.489015: : 3/7/2025: katherinezavala_cm11: 7 Mar 2025 ; Coordinate Uncertainty in Meters: 29.00000.

Puerto Penasco, Sonora: 31.554736, -113.465745: : 1/28/2020: Lin Piest: 28 Jan 2020 ; Coordinate Uncertainty in Meters: 222.00000.

Puerto Penasco, Sonora: 31.651303, -113.479272: : 5/7/2022: F. Gual-Suarez: 7 May 2022 ; Coordinate Uncertainty in Meters: 7.00000.

Occurrence Remarks: ejemplar de talla peque├▒a; Coordinate Uncertainty in Meters: 29093.00000.

Occurrence Remarks: Cr├¡a - Neonato; Coordinate Uncertainty in Meters: 405.00000.

San Luis Rio Colorado, Arizona: 32.292366, -114.162254: : 4/16/2024: Nicholas Procopio: 16 Apr 2024 ; Coordinate Uncertainty in Meters: 29120.00000.

Ensenada, Baja California: 32.164742, -116.672263: : 3/21/2020: Erik Meling: 21 Mar 2020 ; Coordinate Uncertainty in Meters: 7.00000.

San Luis Rio Colorado, Arizona: 32.25188, -114.146833: : 5/13/2021: brandon_dietrich: 13 May 2021 ; Coordinate Uncertainty in Meters: 29120.00000.

Ensenada, Baja California: 32.040554, -116.763054: : 3/29/2018: Elizabeth: 29 Mar 2018 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.470195, -115.93694: : 3/28/2022: Ricardo Rivera: 28 Mar 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.300213, -116.221808: : 4/16/2022: Erik Meling: 16 Apr 2022 ; Coordinate Uncertainty in Meters: 8.00000.

Tecate, Baja California: 32.300206, -116.22185: : 4/16/2022: Cristian A. D. Meling L.: 16 Apr 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.35582, -116.251049: : 4/16/2022: Cristian A. D. Meling L.: 16 Apr 2022 ; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: This snake wandered into our camp, curled up under a bush for awhile, then slithered away. No doubt attracted by all the mice that were hoping to eat a morsel from our camp kitchen.; Coordinate Uncertainty in Meters: 196.00000.

Occurrence Remarks: Guadalupe Canyon; Coordinate Uncertainty in Meters: 999.00000.

Tecate, Baja California: 32.447547, -116.068335: : 5/12/2022: Ricardo Rivera: 12 May 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.040978, -116.73912: : 8/29/2020: Erik Meling: 29 Aug 2020 ; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 3712520028;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3457072176;; Coordinate Uncertainty in Meters: 29120.00000.

Yuma, Arizona: 32.541436, -113.878321: : 3/1/2026: Tellur Fenner (Blue Wind School of Botanical Studies): 1 Mar 2026 ; Coordinate Uncertainty in Meters: 29093.00000.

Unknown, Baja California: 32.56422, -116.07253: : 5/11/2026: Esteban Esquivias: 11 May 2026 ; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4458529618; Occurrence Remarks: On steep, rocky slope. Adult. Bruce Jones, Gary McVicker, Pat McVicker observers. Observation at 1:20 PM. White/Black Speckled morph typical of previous specimens collected in the Tinajas Altas Mtns.;; Coordinate Uncertainty in Meters: 0.11000.

San Luis Rio Colorado, Arizona: 32.222348, -114.09453: : 4/28/2015: jacobddowen: 28 Apr 2015 ; Coordinate Uncertainty in Meters: 29120.00000.

Tecate, Baja California: 32.513977, -116.603441: : 4/4/2021: El Zarco: 4 Apr 2021 ; Coordinate Uncertainty in Meters: 8.00000.

Tijuana, Baja California: 32.374186, -116.910954: : 7/10/2021: El Zarco: 10 Jul 2021 ; Coordinate Uncertainty in Meters: 594.00000.

Ensenada, Baja California: 32.050542, -115.94158: : 7/15/2023: Erik Meling: 15 Jul 2023 ; Coordinate Uncertainty in Meters: 3.00000.

Ensenada, Baja California: 32.050767, -115.939137: : 7/15/2023: Cristian A. D. Meling L.: 15 Jul 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Tecate, Baja California: 32.554181, -116.091041: : 9/18/2021: Ernesto Garc├¡a: 18 Sep 2021 ; Coordinate Uncertainty in Meters: 5218.00000.

Tecate, Baja California: 32.373969, -115.995571: : 9/25/2023: Leonardo Ponce: 25 Sep 2023 ; Coordinate Uncertainty in Meters: 151.00000.

Ensenada, Baja California: 32.101716, -116.433887: : 4/1/2021: Carlos Gonzalez: 1 Apr 2021 ; Coordinate Uncertainty in Meters: 95.00000.

Tijuana, Baja California: 32.393885, -116.910597: : 11/3/2023: Mariana Delgado-Fern├índez: 3 Nov 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.491838, -116.198532: : 5/30/2018: pepeq: 30 May 2018 ; Coordinate Uncertainty in Meters: 29093.00000.

Tecate, Baja California: 32.466628, -115.928513: : 4/23/2024: Karla Zapata Carre├▒o: 23 Apr 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Tecate, Baja California: 32.459112, -115.961692: : 4/24/2024: Karla Zapata Carre├▒o: 24 Apr 2024 ; Coordinate Uncertainty in Meters: 7.00000.

Tecate, Baja California: 32.483805, -116.555671: : 4/24/2024: Leonardo Ponce: 24 Apr 2024 ; Coordinate Uncertainty in Meters: 220.00000.

Ensenada, Baja California: 32.113464, -116.511703: : 4/22/2024: Juan Viramontes: 22 Apr 2024 ; Coordinate Uncertainty in Meters: 43.00000.

Tecate, Baja California: 32.569317, -116.035292: : 5/24/2024: Tereso Hern├índez Morales: 24 May 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.44213, -116.103417: : 6/1/2024: Karla Zapata Carre├▒o: 1 Jun 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Tecate, Baja California: 32.56357, -116.17579: : 6/1/2024: santiag0161: 1 Jun 2024 ; Coordinate Uncertainty in Meters: 23.00000.

Tecate, Baja California: 32.497691, -116.657894: : 4/30/2024: santiag0161: 30 Apr 2024 ; Coordinate Uncertainty in Meters: 23.00000.

Mexicali, Baja California: 32.056918, -115.837727: : 6/11/2024: Mariana Delgado-Fern├índez: 11 Jun 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 32.032379, -115.824693: : 6/12/2024: Mariana Delgado-Fern├índez: 12 Jun 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Tecate, Baja California: 32.441594, -116.008075: : 8/7/2024: Diego Gonz├ílez G├│mez: 7 Aug 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 32.032381, -115.824642: : 6/12/2024: Davidpc: 12 Jun 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 32.056891, -115.837697: : 6/11/2024: Davidpc: 11 Jun 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Ensenada, Baja California: 32.104344, -116.451262: : 8/12/2024: sirius8: 12 Aug 2024 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: with permit; Coordinate Uncertainty in Meters: 29093.00000.

GBIFID: 1838016317; Occurrence Remarks: Very sorry for the gore. Very sorry to find this guy. Tried to shorten its misery after realizing it was a goner.;; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.644336, -116.866025: : 10/31/2025: J. R. Sundberg: 31 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Mexicali, Baja California: 32.628706, -115.707415: : 6/30/2019: alex_vchiu: 30 Jun 2019 ; Coordinate Uncertainty in Meters: 2789.00000.

Mexicali, Baja California: 32.622351, -115.708917: : 7/24/2019: alex_vchiu: 24 Jul 2019 ; Coordinate Uncertainty in Meters: 698.00000.

Tecate, Baja California: 32.580338, -116.059456: : 9/6/2019: Alberto Wong: 6 Sep 2019 ; Coordinate Uncertainty in Meters: 0.11000.

Yuma, Arizona: 32.729653, -114.349717: : 4/15/2026: westernhunter21: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.636988, -116.178475: : 4/22/2026: bayleystevens14: 22 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Stepped within an inch of this large rattlesnake while examining a bunchgrass. Only realized how close I got after placing down my bag, prompting the snake to rattle and move into the brush.; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.743564, -116.968983: : 5/22/2026: J. R. Sundberg: 22 May 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

Imperial, California: 32.664792, -116.073264: : 2/28/2026: Nathan: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: watched this pair of SW speckled rattlesnakes copulate for a few hours. The male continuously courted the female the whole time, tail-wagging, corraling her, chin-rubbing on top of her, that little jerky movement pattern, laying on top of her, etc... even the whole time they were locked up. I left before they split apart.; Coordinate Uncertainty in Meters: 29066.00000.

Yuma, Arizona: 32.666427, -114.344639: : 3/22/2026: Dallas Preston: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 46.00000.

Occurrence Remarks: Smaller snake found on narrow portion of the trail heading down from Corte Madera Peak. Coiled up and rattled his tail, though no noise was made. Eventually scurried under a shrub and we passed.; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Found along Corte Madera Peak trail. Did not move when we got within 10 feet. We hiked through some manzanita to avoid him. Was not there a couple hours later when we hiked back.; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.621731, -116.433481: : 3/29/2026: Lese Majeste: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

Yuma, Arizona: 32.661225, -114.366303: : 3/29/2026: Dallas Preston: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3455364776; Occurrence Remarks: Juvenile Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus or Crotalus pyrrhus) seen on the side of the trail, southeastern San Diego County, California;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3456838449; Occurrence Remarks: Speckled Rattlesnake (Crotalus mitchellii pyrrhus or C. pyrrhus), southern San Diego County, California;; Coordinate Uncertainty in Meters: 200.00000.

GBIFID: 3456957187; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus or C. pyrrhus), southern San Diego County, California;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1839270302; Occurrence Remarks: Chance encounter with this neonate near the top of a rocky knoll. It did not budge during 20+ minutes at this site during field activities unrelated to herptofauna. Time of discovery ~10 am PDT, temperature 80 degrees.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1841331800; Occurrence Remarks: Imperial County, California, US;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4080874361; Occurrence Remarks: Jeff Nordland found this snake the night before, in the same spot. We went back in the morning and it was still there as of 9:00AM.;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 1841331881; Occurrence Remarks: Imperial County, California, US;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4430779194; Occurrence Remarks: Found on the move, partially concealed beneath Encelia farinosa;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4507956940; Occurrence Remarks: Killed by a family member of mine.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4606921184; Occurrence Remarks: Young speckled rattlesnake sunning itself along the edge of the Otay Mountain Truck Trail.;; Coordinate Uncertainty in Meters: 54.00000.

GBIFID: 4852891684; Occurrence Remarks: 91F, on road;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4875051878; Occurrence Remarks: Visited two days in a row.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4908862359; Occurrence Remarks: Very young snake, maybe 9 inches long;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5133437892; Occurrence Remarks: NABA San Diego 2025;; Coordinate Uncertainty in Meters: 57.00000.

San Diego, California: 32.654199, -116.221812: : 4/2/2025: california_every_reptile: 2 Apr 2025 :

GBIFID: 1913716176; Occurrence Remarks: - https://www.herpmapper.org/voucher/6600/full.jpg;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5198749707; Occurrence Remarks: I found this rattlesnake around 4 a.m. in the Telegraph Pass area near Yuma, Arizona. It was calm and not aggressive, but we were still really careful around it. I could clearly see the rattle on its tail and the diamond-shaped pattern on its back. I learned that Western Diamondbacks are venomous, but they only bite if they feel threatened. They help the environment by hunting rodents and keeping the balance in the desert. It was really cool to see one up close in the wild.;; Coordinate Uncertainty in Meters: 196.00000.

GBIFID: 2294671189; Occurrence Remarks: rattle snake;; Coordinate Uncertainty in Meters: 7549.00000.

GBIFID: 2465229702; Occurrence Remarks: Observed during a bio-monitoring gig on the Boeing/SBInet Project. Vicinity of Ocotillo, California.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3070509877; Occurrence Remarks: ground temp: 93F, body temp: 89.5F;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2619926019; Occurrence Remarks: Sorry about the gore.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2620028924; Occurrence Remarks: Banded rock, chuckwalla, leaf-toed gecko, granite night, shovelnose, speckled rattler, red diamond rattler seen in the canyon. No white whale though. More trip details can be read here: Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 2626212496; Occurrence Remarks: Dangerous camouflage - got my head far too close before realizing where it was.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4440780377; Occurrence Remarks: Black and white striped tail.;; Coordinate Uncertainty in Meters: 21.00000.

GBIFID: 1457599917; Occurrence Remarks: Rattlesnake crossing the trail.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 4945817320; Occurrence Remarks: SDSU herpetology field trip;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 4946468379; Occurrence Remarks: SDSU herpetology field trip;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 923926728; Occurrence Remarks: Minutes after finding the chuckie, I found this nice speck out on the crawl in a rocky outcrop about 10ft from the car. First time finding a speck on crawl at night, usually find in the morning or on road at night.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3320963311; Occurrence Remarks: I think this is a speckled rattlesnake found out in Jamul! Caught and released him farther from peoples homes. :);; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 1802702973; Occurrence Remarks: Fine speckled pattern on top of the head leads me to call this a speckled rattlesnake shed. 2 sheds under an overhanging rock in Southern mixed Chaparral.;; Coordinate Uncertainty in Meters: 30.00000.

Tecate, California: 32.608573, -116.135815: : 6/14/2024: Lese Majeste: 14 Jun 2024 ; Coordinate Uncertainty in Meters: 29066.00000.

Imperial, California: 32.678528, -116.087317: : 10/9/2025: Rachel S.: 9 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Occurrence Remarks: Near top of Cuyamaca Peak, Cuyamaca Rancho State Park; Coordinate Uncertainty in Meters: 244.00000.

San Diego, California: 33.005944, -116.400892: : 10/25/2025: benewing: 25 Oct 2025 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.822159, -116.560633: : 5/2/2026: kingsgate: 2 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3759396704; Occurrence Remarks: YOY;; Coordinate Uncertainty in Meters: 7.00000.

Imperial, California: 32.960981, -114.633245: : 5/21/2026: Todd Easterla: 21 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Imperial, California: 32.96099, -114.633246: : 5/21/2026: Todd Easterla: 21 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: I didnt know they occurred this far west in the county; Coordinate Uncertainty in Meters: 1.00000.

San Diego, California: 32.94712, -116.604163: : 5/20/2026: pavelbykau: 20 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.947558, -116.60412: : 5/20/2026: pavelbykau: 20 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Diego, California: 32.939483, -116.483472: : 5/24/2026: Linda Pardy: 24 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.939603, -116.483524: : 5/24/2026: daphodilsd: 24 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.939613, -116.483445: : 5/24/2026: dianimal: 24 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.840728, -117.03868: : 5/24/2026: Rachel Lee Harper: 24 May 2026 ; Coordinate Uncertainty in Meters: 232.00000.

San Diego, California: 32.961904, -116.574612: : 5/25/2026: Caleb Villar: 25 May 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: Larger adult observed in the afternoon; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.192956, -116.393875: : 2/28/2026: Morgan Stickrod: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.832336, -116.291672: : 3/11/2026: dronsse: 11 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.016778, -116.451692: : 3/14/2026: Justyn Stahl: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: Basking in trail. Eventually crawled away and curled up under rock overhang.; Coordinate Uncertainty in Meters: 6.00000.

San Diego, California: 32.916745, -116.878997: : 3/21/2026: Brandi Rene Sanchez RandomBirdLover: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.961419, -116.571758: : 5/9/2026: Ramiro Lobo: 9 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.991037, -116.960778: : 9/28/2025: nathantay: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.801284, -116.420405: : 5/10/2026: tomclymer: 10 May 2026 ; Coordinate Uncertainty in Meters: 1554.00000.

San Diego, California: 32.940072, -116.483825: : 5/12/2026: dennisjfinger: 12 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.989541, -116.926945: : 3/31/2026: ashletta320: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 45.00000.

Occurrence Remarks: I observed these two Southwestern Speckled Rattlesnakes sunning together. Likely a mated pair?; Coordinate Uncertainty in Meters: 29039.00000.

Occurrence Remarks: Night hiked, first of this coloration IΓÇÖve seen in this part of the canyon; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.932228, -116.544874: : 3/17/2026: Claire: 17 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.777606, -116.445319: : 3/24/2026: Linda Pardy: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.103992, -116.434167: : 3/27/2026: bradleyjordan: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.82642, -116.860222: : 3/20/2026: likebirds214: 20 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.940818, -116.609658: : 4/6/2026: sundrenchedsue: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

Occurrence Remarks: Snake very still in the ~ 10 min we were there, blended perfectly with rocks, maybe trying to warm up. Cloudy, temp maybe in the 70s with wind blowing. Length around 2.5 ft, body pretty thick around. Added 4th pic for habitat.; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.098033, -116.665855: : 3/27/2026: thomasmonroemiller: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Diego, California: 33.112675, -116.445367: : 5/20/2025: regryugitating: 20 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 33.065707, -116.465714: : 4/27/2025: makennap: 27 Apr 2025 ; Coordinate Uncertainty in Meters: 5355.00000.

San Diego, California: 32.869019, -116.2379: : 3/22/2025: sdbeetle: 22 Mar 2025 ; Coordinate Uncertainty in Meters: 5.00000.

San Diego, California: 32.772767, -116.438963: : 6/4/2026: Alex Barone: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 32.91293, -116.879395: : 6/6/2026: bbjohnson6810: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Possible Southwestern Speckled Rattlesnake

San Diego, California: 32.916526, -116.879123: : 6/6/2026: nthorpe49: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 14.00000.

San Diego, California: 33.171693, -116.771541: : 6/9/2026: Jonathan Hakim: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.104243, -116.200043: : 6/14/2026: Yinan Li: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 33.106876, -116.250261: : 6/13/2026: wildtabby: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 29012.00000.

San Diego, California: 32.962503, -116.571337: : 6/28/2026: cometkid: 28 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.835237, -116.868605: : 7/8/2026: scentofsagesd: 8 Jul 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Diego, California: 32.777215, -116.438313: : 6/1/2026: Kayla Pearson: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 438.00000.

San Diego, California: 32.962381, -116.575453: : 9/30/2025: sandiegomike: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 32.916528, -116.898613: : 9/30/2025: Lori Boesel: 30 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3456838781; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus or C. pyrrhus), western San Diego County, California;; Coordinate Uncertainty in Meters: 50.00000.

GBIFID: 3456858333; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus or C. pyrrhus), central San Diego County, California;; Coordinate Uncertainty in Meters: 29012.00000.

GBIFID: 3760270739; Occurrence Remarks: Adult;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3859527079; Occurrence Remarks: roadkill. was being picked at by raven;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1850927402; Occurrence Remarks: It was coiled my the trail, but by the time I got my phone out & ready to photo, it had gone to shelter.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4011870892; Occurrence Remarks: Young one was re-released away from popular trails;; Coordinate Uncertainty in Meters: 167.00000.

GBIFID: 4121395052; Occurrence Remarks: dor;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4145632312; Occurrence Remarks: Open to other suggestions;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 4413752366; Occurrence Remarks: Adult in ambush on the side of a rocky slope;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 4420744784; Occurrence Remarks: On Stonewall peak trail, right next to the path;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4430585279; Occurrence Remarks: Thinking Red Diamond? I was zoomed so snake maybe 2.5-3 feet long. It was pretty calm - it rattled few times and then coiled up a bit - just looked me over with some tongue flicking.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4442607622; Occurrence Remarks: Photo from Bob;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4852800972; Occurrence Remarks: Adult Southwestern speckled rattlesnake observed earlier around 12:30pm and then I came back and found it in a different spot at 2:00pm. He kept giving himself away by rattling when I was over 10 feet away. This is in the San pasqual valley area, not Ramona.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4852994927; Occurrence Remarks: Found dead on side of the road. May have been trying to cross when it got hit.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4872415362; Occurrence Remarks: San Diego Tracking Team Camera by permit of Anza Borrego Desert State Park;; Coordinate Uncertainty in Meters: 2442.00000.

GBIFID: 4872617425; Occurrence Remarks: San Diego Tracking Team Camera by permit of Anza Borrego Desert State Park;; Coordinate Uncertainty in Meters: 2442.00000.

GBIFID: 4872394482; Occurrence Remarks: San Diego Tracking Team Camera by permit of Anza Borrego Desert State Park;; Coordinate Uncertainty in Meters: 2442.00000.

GBIFID: 4900938864; Occurrence Remarks: Ive probably seen at least 6 rattlesnakes on the peak over the last several years but this one made me scream for sure. Nearly stepped right on it and it didnt even rattle. Snake chaps are worth every penny in this brush!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4902002578; Occurrence Remarks: See the person with the cell phone for scale. Id say no more than 1.5 inches across.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4904253582; Occurrence Remarks: Some modeling photos before release. She was an amazing model.;; Coordinate Uncertainty in Meters: 1604.00000.

GBIFID: 2238920536; Occurrence Remarks: A semi-tame snake than hangs out below the bird feeders in the viewing area.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2251993391; Occurrence Remarks: Nearly gave Flynn a heart attack;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 2273234931; Occurrence Remarks: Sighted adjacent to trail near summit of Stonewall Peak. Breezy, chilly conditions. Barely budged even when a troop of Boy Scouts arrived with considerable excitement.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 5154110554; Occurrence Remarks: Very very small. Triangle shaped head! Careful!!! Top of Stonewall Peak Cuyamaca;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5167987618; Occurrence Remarks: Ants eating a dead Southwestern Speckled Rattlesnake (Crotalus pyrrhus) on the edge of the trail. The snake had no visible external wounds or injuries. This observation is for the rattlesnake Ant observation: https://www.inaturalist.org/observations/280883887;; Coordinate Uncertainty in Meters: 7.00000.

San Diego, California: 33.082257, -116.13868: : 2/17/2020: Fred Melgert / Carla Hoegen: 17 Feb 2020 :

GBIFID: 1315061095; Occurrence Remarks: Found coiled up and resting on a boulder at dusk. This was the second rattlesnake of the night, but the first speckled rattler that I have seen at this location(or anywhere in coastal SoCal for that matter);; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2626627782; Occurrence Remarks: Just a beautiful canyon - within maybe 30 minutes saw a speck, leafnose, shovelnose, chuckwalla, couple banded geckos, and a dozen leaf-toed geckos.;; Coordinate Uncertainty in Meters: 29066.00000.

San Diego, California: 32.875441, -116.204576: : 4/2/2026: Matt Gruen: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 2634223870; Occurrence Remarks: 66┬░ out so why not take a sun nap on the side of road. This snake was sleeping when I first found it. The alert/strike pose came when I initially woke up this beauty up to move it off the road to a safer place to sleep, and the GIF file shows just how reluctantly it slowly moved up the hill.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2802997337; Occurrence Remarks: I saw this individual snake almost a year ago in the exact same location;; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 3301891415; Occurrence Remarks: I know itΓÇÖs a rattlesnake because I saw the rattles. It swam this little creek.;; Coordinate Uncertainty in Meters: 20899.00000.

GBIFID: 2862677476; Occurrence Remarks: Sandy flat; Midday. Temp approx 105*-110*. Humidity 40%. Adult Specimen was observed without disturbance. This particular pit viper is described in literature as one of the most venomous. The similarly colored and banded Tiger Rattlesnake has smaller head and larger rattle.;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2901721638; Occurrence Remarks: Poor woodpecker was still alive. Buddy of mine walked right over it and neither of us even noticed the snake until I pointed out the dying bird at his feet.;; Coordinate Uncertainty in Meters: 71.00000.

GBIFID: 891083052; Occurrence Remarks: The exciting find for the day, and a fantastic hike as well!;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1703233708; Occurrence Remarks: 2/2 individuals found about 50 feet apart.;; Coordinate Uncertainty in Meters: 66701.00000.

GBIFID: 1703233615; Occurrence Remarks: Large adult.;; Coordinate Uncertainty in Meters: 7328.00000.

GBIFID: 3384338952; Occurrence Remarks: Discovered hiding in trailer wheel shortly before I was to depart camp. A monsoonal middle of the night flash flood three nights prior may have displaced it. For campground safety reasons, it was relocated by staff. Length was approximately 26. It did not rattle at any time. I do not know the final location.;; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 32.892683, -116.422696: : 7/4/2026: this_scientician: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 75.00000.

San Diego, California: 33.01682, -116.451691: : 3/14/2026: Matt Sadowski: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Diego, California: 32.911296, -116.872981: : 10/18/2025: Raven: 18 Oct 2025 ; Coordinate Uncertainty in Meters: 301.00000.

San Diego, California: 33.173139, -117.062536: : 7/20/2026: brianswanson: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.609882, -116.426726: : 3/28/2026: dalemeister: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1839269997; Occurrence Remarks: Young Speckled Rattlesnake coiled on the slope of Thimble Peak.;; Coordinate Uncertainty in Meters: 244.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 28957.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 28984.00000.

Orange, California: 33.616128, -117.503975: : 10/10/2025: california_every_reptile: 10 Oct 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.620624, -115.306963: : 4/1/2026: Colin Barrows: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.242905, -116.42472: : 3/21/2026: Matthew Bokach: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.617212, -115.9936: : 4/8/2026: smhynes: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3760176395; Occurrence Remarks: My brother in law was mountain biking and saw this snake this morning! He doesnΓÇÖt have an iNaturalist and said I could post it.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 3079515304; Occurrence Remarks: 10:11 AM. Crossing road on north facing slope south of Santa Margarita River;; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.322422, -112.066964: : 4/3/2026: Alba Medina: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.214783, -116.42505: : 5/14/2026: Leila Warren: 14 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: It moved away from the trail when I walked along and hid in a crevice. It was completely relaxed and showed no defensive behavior even when approached.; Coordinate Uncertainty in Meters: 92.00000.

Occurrence Remarks: Probably hit by a car in the parking lot at the trailhead; Coordinate Uncertainty in Meters: 23.00000.

Riverside, California: 33.492059, -117.10682: : 4/17/2026: lilycat218: 17 Apr 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Maricopa, Arizona: 33.354305, -112.020989: : 4/19/2026: Eryca Fawkes: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Diego, California: 33.288311, -116.440457: : 4/14/2026: bdog: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.348435, -112.113735: : 4/21/2026: excitingname: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 322.00000.

Maricopa, Arizona: 33.564147, -112.013292: : 4/20/2026: bezrq: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Maricopa, Arizona: 33.351625, -112.158817: : 5/23/2026: Caleb Martinez: 23 May 2026 ; Coordinate Uncertainty in Meters: 28984.00000.

San Diego, California: 33.404139, -117.261477: : 5/20/2026: c_merrylees: 20 May 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

San Diego, California: 33.214195, -117.167639: : 5/31/2026: bluesagebanjo: 31 May 2026 ; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3889069673; Occurrence Remarks: Grey and cream colored rattlesnake;; Coordinate Uncertainty in Meters: 4.00000.

Maricopa, Arizona: 33.54577, -112.004761: : 4/9/2025: Emmalee: 9 Apr 2025 ; Coordinate Uncertainty in Meters: 2.00000.

San Diego, California: 33.424283, -117.126167: : 3/8/2026: Christopher Scolinos: 8 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.424126, -117.126332: : 3/15/2026: Christopher Scolinos: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.270425, -116.421653: : 4/11/2026: slewis53: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 20.00000.

Maricopa, Arizona: 33.362153, -111.987794: : 5/11/2026: gdomet: 11 May 2026 ; Coordinate Uncertainty in Meters: 31.00000.

La Paz, Arizona: 33.523071, -113.894391: : 10/6/2025: Madison Lutes: 6 Oct 2025 ; Coordinate Uncertainty in Meters: 28957.00000.

Maricopa, Arizona: 33.537803, -112.021325: : 4/7/2026: rmcenulty: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.574287, -116.43312: : 5/2/2026: jprado: 2 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Maricopa, Arizona: 33.567887, -111.996391: : 5/2/2026: Ashton: 2 May 2026 ; Coordinate Uncertainty in Meters: 206.00000.

Riverside, California: 33.592475, -117.308199: : 4/8/2026: c_merrylees: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 28957.00000.

Maricopa, Arizona: 33.521112, -111.970108: : 10/11/2025: Emmalee: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Maricopa, Arizona: 33.538753, -112.019783: : 5/6/2026: rmcenulty: 6 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Rattle snake; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Its not always safe on top of rocks in the late afternoon :0; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Lifer; Coordinate Uncertainty in Meters: 28984.00000.

Maricopa, Arizona: 33.394106, -111.959795: : 9/18/2025: Kathryn Dick: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 28984.00000.

Occurrence Remarks: Probably had to move higher up, closer to trail from the flooding; Coordinate Uncertainty in Meters: 590.00000.

San Diego, California: 33.330253, -116.639062: : 4/9/2026: Jim Lazar: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Maricopa, Arizona: 33.333722, -112.122964: : 5/16/2026: hoppersci: 16 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Riverside, California: 33.606142, -116.431121: : 5/16/2026: dalemeister: 16 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: In a bush but tried to get a few decent shots for id.; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.608138, -117.433067: : 3/25/2026: pavelbykau: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.621278, -116.264695: : 3/26/2026: Jan Thompson: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Maricopa, Arizona: 33.541852, -112.020161: : 3/27/2026: woodsyone: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.424995, -117.126355: : 3/28/2026: Christopher Scolinos: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Diego, California: 33.410237, -117.24993: : 4/3/2026: walkingnlookin: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Riverside, California: 33.585297, -116.425187: : 4/8/2026: toby_wood: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.598767, -115.940495: : 4/4/2026: whereintarnation: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 581.00000.

Occurrence Remarks: Coyote Canyon; Coordinate Uncertainty in Meters: 28984.00000.

Occurrence Remarks: Found by Tim Dayton. Was coiled in the shade and facing the base of a palo verde trunk during the early evening around 30min before sundown. Likely in ambush for lizards or other prey seeking shade. Daily high temperature in the area was 92 degrees F and the air temp was probably around 89-90 degrees F when the snake was found.; Coordinate Uncertainty in Meters: 28984.00000.

Occurrence Remarks: Very small, maybe a foot long, although itΓÇÖs hard to tell while itΓÇÖs coiled up. The plant nearby is the base of a brittlebush, for scale; Coordinate Uncertainty in Meters: 90.00000.

Maricopa, Arizona: 33.361267, -111.985512: : 6/2/2026: Peter Abrahamsen: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Maricopa, Arizona: 33.343404, -112.074288: : 6/14/2026: Jason Guo Θâ¡τ┤½σ«╕: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 459.00000.

Maricopa, Arizona: 33.360278, -112.004928: : 6/21/2026: ash ponders: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Maricopa, Arizona: 33.360271, -112.037051: : 10/12/2025: matminja: 12 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Maricopa, Arizona: 33.311794, -112.049914: : 10/14/2025: Loren Tomasi: 14 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.273674, -112.123233: : 9/18/2025: cjonthemountain: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 3455574748; Occurrence Remarks: Was sitting near the trail I was hiking. Heard a couple of very slight shakes- had certainly been in striking distance but it calmly slithered off.;; Coordinate Uncertainty in Meters: 1549.00000.

GBIFID: 3468703894; Occurrence Remarks: Very small, found on ladder canyon trail in Mecca Hills Wilderness. Seems juvenile.;; Coordinate Uncertainty in Meters: 400.00000.

GBIFID: 3698316545; Occurrence Remarks: in-situ;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 1838038730; Occurrence Remarks: BioBlitz organized by the Natural History Club at San Diego State University Santa Margarita Ecological Reserve Riverside County, California, US;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859028007; Occurrence Remarks: Mockingbird and Curve-bill Thrashers mobbing a Tiger Rattlesnake.;; Coordinate Uncertainty in Meters: 504.00000.

GBIFID: 1839263407; Occurrence Remarks: Observed while on a hike to Beauty Peak. The snake was in the shade and remained still as we walked around it.;; Coordinate Uncertainty in Meters: 32.00000.

GBIFID: 3859454397; Occurrence Remarks: Was just about to sit on the porch swing when I spotted this rattlesnake directly underneath!;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 3860167511; Occurrence Remarks: Successfully relocated this rattlesnake that was found under my porch swing 30 minutes ago.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3859540028; Occurrence Remarks: A baby;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1847488858; Occurrence Remarks: Mating pair;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3079791305; Occurrence Remarks: Vicinity of Indian flats. On trail edge. 9:50 AM;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3873975577; Occurrence Remarks: Trail Running on Cactus Springs Trail. This little juvenile was sleeping perfectly blended into a rock in the middle of the trail. A great reminder to try and be aware of your surroundings.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4046389983; Occurrence Remarks: Only slightly larger than a bagel - in the middle of the trail, not rattling;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4080546125; Occurrence Remarks: In situ;; Coordinate Uncertainty in Meters: 52114.00000.

GBIFID: 4096606856; Occurrence Remarks: Speckled rattlesnake;; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 4102596719; Occurrence Remarks: 3 ft;; Coordinate Uncertainty in Meters: 10.00000.

San Diego, California: 33.217412, -116.4519: : 4/29/2023: Bradford Hollingsworth: 29 Apr 2023 :
GBIFID: 4102782775; Occurrence Remarks: LOR; CNC 2023;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4116290920; Occurrence Remarks: I thought it was a green mohave at first, but I believe it is a speckled, just had not ever seen one so green.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1913686100; Occurrence Remarks: The color and pattern match to the Rock substrate is right on.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1913705123; Occurrence Remarks: Second one of the night. About 200 feet from the first individual, this one was on the crawl, the first was in ambush;; Coordinate Uncertainty in Meters: 153626.00000.

GBIFID: 1098919837; Occurrence Remarks: Approx. 85 cm long, on trail, elevation 378 m.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1914347358; Occurrence Remarks: Encountered in vicinity of Bighorn sheep count blind, 4th Grove, Borrego Palm Canyon;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4172183046; Occurrence Remarks: Dead on the trail, likely trampled by a person or wild animal;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4416874076; Occurrence Remarks: Smaller, but very blue; moved into a crevice as I was taking my phone out to photo it;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4416797112; Occurrence Remarks: Lifer blue speck; moved into crevice while being photographed, but was reobserved ~4 hours later on the way down (cf. last photo). South Mountain.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4416696963; Occurrence Remarks: Relatively large one; reobserved ~4 hrs later on the way down. South Mountain.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4453900438; Occurrence Remarks: Obscured due to it occurring at its likely home outcropping.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4596910296; Occurrence Remarks: *PHOTOS ARE ZOOMED IN* Spotted on Camelback Mountain in Phoenix, AZ. Basking between rocks on shelf at Echo Canyon Trailhead. *Posted to Reddit ôr/whatisthissnakeö for ID confirmation.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4599817876; Occurrence Remarks: Poor quality screenshots of video of speckled rattlesnake.;; Coordinate Uncertainty in Meters: 84.00000.

GBIFID: 4846931553; Occurrence Remarks: These are shy little snakes. He was just coiled under a big rock watching the hikers go by.;; Coordinate Uncertainty in Meters: 124.00000.

GBIFID: 2028481860; Occurrence Remarks: Neonate. Under 10ö overall length. In shade under foliage. Single button rattle. No attempt at ôrattling.ö;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4867614694; Occurrence Remarks: Rattlesnake successfully relocated from a neighborΓÇÖs home, near a sliding glass door, to the other side of Highway 74 where there is no housing.;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 2235551466; Occurrence Remarks: Elsinore Peak;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2238802819; Occurrence Remarks: CNC 2019; LOR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2238840005; Occurrence Remarks: CNC 2019; DOR;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4926017611; Occurrence Remarks: Lifer pink speck hiked crossing a wash; vibrant venter and stub rattle.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 3079545579; Occurrence Remarks: Very small! Like a large earthworm!;; Coordinate Uncertainty in Meters: 6866.00000.

GBIFID: 4936374355; Occurrence Remarks: Pima wash side;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4946176143; Occurrence Remarks: Basking and quickly excited. Released into suitable crevice. Phoenix Mountains.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4946013112; Occurrence Remarks: Hiked with @birdnerd10; duplicate of one of his observations. Startled out of place and redirected into a more suitably crevice than the hole in which it tried to hide. South Mountain.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4946692490; Occurrence Remarks: Hiked with @birdnerd10; duplicate of one of his observations. South Mountain.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4946263865; Occurrence Remarks: Hiked with @birdnerd10; duplicate of one of his observations. South Mountain.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 1227749028; Occurrence Remarks: Basking on cement block. Small. Did not rattle. A western fence lizard ran by and it did lunge at it, but missed.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5133176320; Occurrence Remarks: Seen off the trail to Palm Canyon;; Coordinate Uncertainty in Meters: 887.00000.

GBIFID: 2251913225; Occurrence Remarks: looked like juvenile;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 5064102610; Occurrence Remarks: Found dead.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2265823301; Occurrence Remarks: Along Nate Harrison Road to Palomar Mountain.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 2265836045; Occurrence Remarks: Survey of PCT from Cedar Spring Trail to Hwy 74. Unlike the previous snake we saw, this one went into a coil as soon as it saw us coming. We managed to get past it without getting it too excited.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5134567490; Occurrence Remarks: This rattlesnake was a complete surprise that I was not aware of until I looked at my photos of the Thrasher. I have 21 observations of the Southwestern Speckled Rattlesnake in the immediate area of this observation, which aided in the identification. The Thrasher appears to have no fear of the coiled rattlesnake.;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 5153310998; Occurrence Remarks: Rather unexpected but very welcome lifer, spotted on the side of the road. Retreated into bushes before I could get better pictures;; Coordinate Uncertainty in Meters: 11.00000.

GBIFID: 1262380054; Occurrence Remarks: Small individual; seen at Horse Tanks, King Valley;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5154516578; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 5238056039; Occurrence Remarks: Found by @lutes;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 1291141880; Occurrence Remarks: Found moving along the recently flooded Pima wash.;; Coordinate Uncertainty in Meters: 86.00000.

GBIFID: 2641603604; Occurrence Remarks: I saw this snake in early May 2016, before I had iNaturalist, so uploading now. That whitish color on this snake sure was pretty!;; Coordinate Uncertainty in Meters: 347.00000.

GBIFID: 2814411738; Occurrence Remarks: Same location as the day before. Different specimen.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 2856562610; Occurrence Remarks: Relocated;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1571070083; Occurrence Remarks: 24 inches long On the Cactus Spring Trail Santa Rosa Wilderness Temperature approximately 75. Sunny;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 1500300883; Occurrence Remarks: This speckled rattlesnake moved slowly across the trail immediately behind the visitor center while we (and the lizard) sat, mesmerized.;; Coordinate Uncertainty in Meters: 81.00000.

GBIFID: 1500308588; Occurrence Remarks: Hiking the Cactus Springs Trail. The rattler was about 24 inches long. It was on the trail and let me know to stay back by rattling. It crawled off to trail so we passed without issue. The temperature was around 75. It was the second rattler we saw on this in a week.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2864608177; Occurrence Remarks: Sorry the pictures arenÆt great, these are screenshots from a video and it was dark. Obviously a young guy.;; Coordinate Uncertainty in Meters: 55.00000.

San Diego, California: 33.220208, -116.461105: : 5/5/2017: Bradford Hollingsworth: 5 May 2017 :
GBIFID: 1562897033; Occurrence Remarks: DOR; Culp Valley, ABDSP;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2898349653; Occurrence Remarks: Possible gravid female? 91F;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2898332807; Occurrence Remarks: Insitu - Light rain falling on this winter day... Shavers Well Box Canyon. Rocks and C mitch were wet. Air temp 59F;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 3031647101; Occurrence Remarks: On hiking trail;; Coordinate Uncertainty in Meters: 51402.00000.

GBIFID: 3079563370; Occurrence Remarks: In dense riparian vegetation adjacent to flowing creek.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1572362627; Occurrence Remarks: A couple of coyotes were running down the mountain and they suddenly jumped and darted from a rock (and a rattle)! I slowly walked up and circled around to get this shot.;; Coordinate Uncertainty in Meters: 447.00000.

GBIFID: 1584437118; Occurrence Remarks: Waiting by rodent hole along barrier wall;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 3079703925; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3090743728; Occurrence Remarks: Someone was so impatient for this snake to cross the trail that they smashed in its head with a rock. On trail 100 in Piestewia Peak Park;; Coordinate Uncertainty in Meters: 16.00000.

Riverside, California: 33.598412, -116.28886: : 5/3/2021: Sendy Hern├índez Orellana Barrows: 3 May 2021 :

GBIFID: 3302056760; Occurrence Remarks: First one Ive seen in ages. Crossed the trail in front of us as we were walking in the morning.;; Coordinate Uncertainty in Meters: 528.00000.

GBIFID: 3320927885; Occurrence Remarks: 42+ inches long. Blocked hiking trail with basking. Reared back into s-curve upon approach, loud ratting 8+ buttons on tail. Specimen gently moved off the trail with snake hook.;; Coordinate Uncertainty in Meters: 335.00000.

GBIFID: 1703233657; Occurrence Remarks: 1/2 individuals found about 50 feet apart.;; Coordinate Uncertainty in Meters: 89161.00000.

GBIFID: 3337737984; Occurrence Remarks: Next to our yurt. WeΓÇÖve seen at least two different speckled rattlesnakes around our place and moved them both several miles away. One bit my foot last September, a minor bite but sobering. Glad for the antivenin. Seem to be attracted to ground level water. Photo taken at the release site.;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3355815321; Occurrence Remarks: Observed by Nathan Hutcherson. Shavers Well;; Coordinate Uncertainty in Meters: 61.00000.

Maricopa, Arizona: 33.317391, -112.066419: : 7/5/2026: abrenneman: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 505.00000.

La Paz, Arizona: 33.343644, -114.313012: : 8/25/2025: Madison Lutes: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 28984.00000.

La Paz, Arizona: 33.218769, -114.34502: : 8/26/2025: Jorge Aguilera: 26 Aug 2025 ; Coordinate Uncertainty in Meters: 28984.00000.

La Paz, Arizona: 33.439997, -113.915631: : 8/28/2025: Jorge Aguilera: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 28957.00000.

Maricopa, Arizona: 33.245703, -113.311395: : 8/20/2025: Jorge Aguilera: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 28984.00000.

Occurrence Remarks: Found dead on De Luz Rd. Vehicle strike. covered in ants; Coordinate Uncertainty in Meters: 84.00000.

La Paz, Arizona: 33.55393, -113.803946: : 9/8/2025: Jorge Aguilera: 8 Sep 2025 ; Coordinate Uncertainty in Meters: 28957.00000.

San Diego, California: 33.404942, -117.220733: : 7/20/2026: Joel F.: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.582613, -116.454397: : 7/20/2026: makinenj1: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.057195, -116.0251: : 5/6/2018: Bryan Hamilton: 6 May 2018 :

GBIFID: 891060807; Occurrence Remarks: Seen in Lost Palms Oasis.;; Coordinate Uncertainty in Meters: 200.00000.

San Bernardino, California: 34.048054, -116.115683: : 4/23/2026: trailtabby: 23 Apr 2026 ; Coordinate Uncertainty in Meters: 21.00000.

Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 28930.00000.

San Bernardino, California: 34.05305, -116.394705: : 3/15/2026: A. M.: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.072395, -116.40217: : 5/26/2024: busiak13: 26 May 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: This one sucked, bummer of a DOR; Coordinate Uncertainty in Meters: 23.00000.

Riverside, California: 33.648272, -116.375717: : 9/7/2025: mc_california: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 19.00000.

Occurrence Remarks: Really chill guy!! Over 2ft long, Crossing Covington Rd after sunset; Coordinate Uncertainty in Meters: 1308.00000.

Maricopa, Arizona: 33.823704, -112.211502: : 9/13/2025: Eric Hough: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 3859181134; Occurrence Remarks: Im thinking this is an Arizona Black Rattlesnake..what are your thoughts!?;; Coordinate Uncertainty in Meters: 72.00000.

GBIFID: 4172262750; Occurrence Remarks: Visitor Center back door;; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.661123, -116.318397: : 4/21/2026: Cameron W Barrows: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 1.00000.

GBIFID: 3912225578; Occurrence Remarks: Just a baby!;; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.671622, -116.40863: : 4/6/2026: Batlady: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.971742, -116.6503: : 4/4/2026: Abeygail Garcia: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.939412, -115.968995: : 4/8/2026: goldenjag: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 34.015883, -116.06707: : 3/27/2026: barrett_bauer: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: Joshua Tree Best find...beautiful snake; Coordinate Uncertainty in Meters: 1.00000.

La Paz, Arizona: 33.672097, -114.058669: : 4/15/2026: Matt Brady: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.6335, -116.303047: : 4/16/2026: hwhalin: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.873415, -115.900992: : 4/20/2026: Al Hooks: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 52530.00000.

Riverside, California: 33.739905, -115.812583: : 4/20/2026: Jake Jones: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.081198, -116.069144: : 4/21/2026: niravraham: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.069786, -116.169783: : 4/24/2026: chasechasechase: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Riverside, California: 34.01084, -116.05657: : 4/25/2026: Yvonne Verkuil: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 515.00000.

Riverside, California: 33.648404, -116.376671: : 4/25/2026: punkrockcreep: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 45.00000.

Riverside, California: 33.987643, -116.014645: : 4/8/2026: epic2112: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.7651, -117.5577: : 4/25/2026: Elijah S.: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 11.10000.

San Bernardino, California: 34.093331, -116.168625: : 4/25/2026: Ashley Resurreccion: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

Riverside, California: 33.648067, -116.377303: : 5/15/2026: Chris Tracy: 15 May 2026 ; Coordinate Uncertainty in Meters: 16.00000.

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

Riverside, California: 33.69492, -116.638633: : 5/22/2026: desertjules: 22 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.694917, -116.63862: : 5/22/2026: cmdv1955: 22 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.694908, -116.638648: : 5/22/2026: Cameron W Barrows: 22 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.872761, -115.900992: : 5/24/2026: harrietmilli: 24 May 2026 ; Coordinate Uncertainty in Meters: 52777.00000.

San Bernardino, California: 34.066733, -116.157211: : 5/24/2026: Tina Treude: 24 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.69488, -116.63868: : 5/22/2026: Jan Thompson: 22 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 34.003125, -116.047497: : 5/27/2026: James Maughn: 27 May 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Riverside, California: 33.930922, -116.641952: : 5/25/2026: chezasaurus: 25 May 2026 ; Coordinate Uncertainty in Meters: 199.00000.

Riverside, California: 34.027936, -116.147133: : 5/30/2026: kale_y: 30 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Riverside, California: 33.648203, -116.375847: : 3/22/2026: Chris Tracy: 22 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4130102974; Occurrence Remarks: Cryptic behavior observed when nearly complacently trampled.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3067768398; Occurrence Remarks: Along San Juan Trail. Remained still on rock, almost blending in completely. Eventually moved to side of trail not showing any aggressive behavior. Approximately 1.5 feet long, juvenile. Chaparral habitat.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3903438114; Occurrence Remarks: Found dead on trail;; Coordinate Uncertainty in Meters: 114.00000.

GBIFID: 4852097986; Occurrence Remarks: Found dead;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4102859149; Occurrence Remarks: Hard to see and get photo, but this is two C. pyrrhus mating.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1088938107; Occurrence Remarks: Found under rocks near the top of a desert hill.;; Coordinate Uncertainty in Meters: 55.00000.

Maricopa, Arizona: 33.64083, -112.099782: : 2/28/2026: cjonthemountain: 28 Feb 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

San Bernardino, California: 34.084617, -116.140572: : 3/1/2026: ecodanielle: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: lifer, ~73 F; Coordinate Uncertainty in Meters: 17.00000.

Riverside, California: 34.024301, -115.677963: : 3/14/2026: Ben Nicholas: 14 Mar 2026 ; Coordinate Uncertainty in Meters: 50.00000.

Riverside, California: 33.739753, -115.805008: : 3/15/2026: bayleystevens14: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.694797, -116.638619: : 5/22/2026: Pete Schwartz: 22 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.73224, -116.738779: : 4/25/2026: natalia-bayon: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1847558223; Occurrence Remarks: My best guess is C. pyrrhus.;; Coordinate Uncertainty in Meters: 200.00000.

Riverside, California: 33.979388, -116.671738: : 3/31/2026: kiloquad: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Bernardino, California: 34.073416, -116.386612: : 4/19/2026: mishaaz: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Riverside, California: 33.732883, -115.799514: : 4/15/2026: Alex Bairstow: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.733117, -115.798936: : 4/15/2026: Alex Bairstow: 15 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.648053, -116.376128: : 5/2/2026: Chris Tracy: 2 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.092367, -116.156189: : 5/2/2026: William Wallace: 2 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.648067, -116.376205: : 5/3/2026: Chris Tracy: 3 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Riverside, California: 34.006698, -116.057566: : 5/1/2026: alexb0000: 1 May 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Riverside, California: 33.862263, -116.868462: : 5/2/2026: Michael Zelun Lee: 2 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.904878, -116.643013: : 5/7/2026: tbargholz: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.97, -116.652297: : 5/7/2026: tbargholz: 7 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.093614, -116.171578: : 5/8/2026: dustycactus: 8 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.779258, -117.409701: : 5/9/2026: Caleb Martinez: 9 May 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.721761, -115.813072: : 5/2/2026: Henrik Kibak: 2 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.962005, -116.650222: : 4/14/2026: seapaul: 14 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: In front of my houseΓÇª Why did the rattlesnake cross the road?; Coordinate Uncertainty in Meters: 28902.00000.

Occurrence Remarks: Went searching for snakes with Paisley and saw this baby speckled crossing the street.; Coordinate Uncertainty in Meters: 28902.00000.

Riverside, California: 33.645128, -116.313687: : 9/21/2025: Brianda Paz: 21 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.039936, -116.0709: : 5/13/2026: desertjules: 13 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.039944, -116.070944: : 5/13/2026: Pete Schwartz: 13 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.039903, -116.070878: : 5/13/2026: Cathy Wiley: 13 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Bernardino, California: 34.039842, -116.070944: : 5/13/2026: epfodeb: 13 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Bernardino, California: 34.039928, -116.07093: : 5/13/2026: Jan Thompson: 13 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.039914, -116.070922: : 5/13/2026: Rochelle Watson: 13 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.039943, -116.07093: : 5/13/2026: Cameron W Barrows: 13 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.784876, -111.79785: : 5/13/2026: elisealan: 13 May 2026 ; Coordinate Uncertainty in Meters: 1993.00000.

Riverside, California: 33.826012, -116.281212: : 5/12/2026: lagardilla: 12 May 2026 ; Coordinate Uncertainty in Meters: 11.00000.

San Bernardino, California: 34.071353, -116.401512: : 5/16/2026: judytop: 16 May 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.734192, -115.799133: : 5/16/2026: gabrielmolnar: 16 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 34.014192, -116.172783: : 5/16/2026: poppyploidy: 16 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 34.016333, -116.629387: : 4/8/2026: Sebastian Fayer: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 10.00000.

Riverside, California: 33.926863, -116.187447: : 3/19/2026: caknight13: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: On front entryway of Visitor Center; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.943653, -116.14145: : 3/21/2026: Shawn Gallagher: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: ΓÇ£Seen on a sandy wash/road in Joshua Tree around 6pm. Snake was initially coiled, then moved away in a straight slither. Noticed looping track patterns in the sand nearby. Trying to determine the species. Thank You!ΓÇ¥; Coordinate Uncertainty in Meters: 9.00000.

Riverside, California: 33.954911, -116.222861: : 3/16/2026: Todd Ramsden: 16 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Riverside, California: 33.729367, -116.530633: : 3/24/2026: socalhikergal: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Orange, California: 33.828503, -117.683463: : 3/25/2026: sagevinje: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Maricopa, Arizona: 33.736703, -112.151709: : 3/24/2026: Tom Horton: 24 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.922938, -116.051619: : 3/25/2026: Erik Lopez: 25 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.814063, -116.621763: : 3/28/2026: Maev Douglas: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Orange, California: 33.717383, -117.610742: : 3/28/2026: Caleb: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Lifer! Wish we could have found one not in a crack.. Riverside County, CA; Coordinate Uncertainty in Meters: 65065.00000.

Riverside, California: 33.776547, -116.232475: : 3/29/2026: Bob Keeran: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Yavapai, Arizona: 34.053435, -112.15378: : 3/29/2026: Melanie and John Dicus: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 501.00000.

Riverside, California: 33.648125, -116.376488: : 3/28/2026: Chris Tracy: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 44.00000.

Occurrence Remarks: Woodrat tail is only thing left for digestion.; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.648078, -116.376022: : 4/1/2026: Chris Tracy: 1 Apr 2026 ; Coordinate Uncertainty in Meters: 16.00000.

Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 35.00000.

Riverside, California: 33.627904, -116.321956: : 4/5/2026: Rpmillstein: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.62792, -116.321975: : 4/5/2026: mcitrin: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Orange, California: 33.744817, -117.543974: : 4/6/2026: rschoedl: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.880591, -115.936716: : 4/2/2026: Erica Keller: 2 Apr 2026 ; Coordinate Uncertainty in Meters: 1953.00000.

Occurrence Remarks: Recently struck by car.; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.766876, -115.811709: : 4/12/2026: clarksnutcracker_limberpine_shipper: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 2426.00000.

Occurrence Remarks: approx 16-18 in length; climbing up rocky embankment after crossing dirt road; Coordinate Uncertainty in Meters: 69295.00000.

Occurrence Remarks: Unclear if the group of hikers interrupted predation of the ground squirrel on right; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.965827, -116.443518: : 4/13/2026: smeckert: 13 Apr 2026 ; Coordinate Uncertainty in Meters: 31.00000.

Yavapai, Arizona: 33.982543, -112.367533: : 10/2/2025: gregpc: 2 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.68813, -112.109594: : 7/25/2025: kclinevell: 25 Jul 2025 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.933976, -115.964101: : 6/4/2026: jonathon davis: 4 Jun 2026 ; Coordinate Uncertainty in Meters: 1057.00000.

Riverside, California: 33.647788, -116.375445: : 6/2/2026: Chris Tracy: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Riverside, California: 33.974441, -116.651915: : 6/3/2026: Scott Collins: 3 Jun 2026 ; Coordinate Uncertainty in Meters: 81.00000.

Riverside, California: 33.99023, -116.022278: : 6/6/2026: lagardilla: 6 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.036873, -116.41596: : 6/7/2026: bflygirl88: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Maricopa, Arizona: 33.694303, -112.177187: : 6/8/2026: David: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.811479, -116.624993: : 6/5/2026: biancalamont94: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 3110.00000.

Riverside, California: 34.031554, -116.52728: : 6/10/2026: trailtabby: 10 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Riverside, California: 33.67595, -116.316703: : 6/8/2026: Rochelle Watson: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.92675, -116.187575: : 6/9/2026: james_bastian: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Yavapai, Arizona: 33.906515, -112.309059: : 6/8/2026: jphett: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 296.00000.

San Bernardino, California: 34.043877, -116.390288: : 4/19/2026: niravraham: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.071762, -116.073199: : 7/7/2026: jakefnorman: 7 Jul 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.038227, -116.817227: : 6/13/2026: Lukasz Czerwinski: 13 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Riverside, California: 33.647872, -116.376472: : 6/16/2026: Chris Tracy: 16 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: Track measured to be ~4ΓÇÖ4; Coordinate Uncertainty in Meters: 28930.00000.

Orange, California: 33.652783, -117.46147: : 6/12/2026: fmroberts2: 12 Jun 2026 ; Coordinate Uncertainty in Meters: 7.00000.

San Bernardino, California: 34.060351, -116.211995: : 6/14/2026: Christopher Carlin: 14 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Riverside, California: 33.988412, -116.013183: : 6/17/2026: Danner Chartier: 17 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Riverside, California: 33.678028, -116.369278: : 6/21/2026: mc_california: 21 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Not a great picture... But it really did sneak up on me.

Riverside, California: 33.647912, -116.376105: : 7/15/2026: Chris Tracy: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Riverside, California: 33.827014, -116.330811: : 9/17/2024: Elijah Short: 17 Sep 2024 ; Coordinate Uncertainty in Meters: 15.00000.

Riverside, California: 33.756549, -115.820819: : 9/19/2025: Thomas ARMAND: 19 Sep 2025 ; Coordinate Uncertainty in Meters: 6859.00000.

Riverside, California: 33.889145, -116.68283: : 5/29/2024: Lucas Ramirez: 29 May 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.761017, -116.550163: : 8/25/2025: batshipcrazy407: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1837761320; Occurrence Remarks: I had no idea these guys could get this high on the rocks or wanted to with the rough surfaces and all;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1839270179; Occurrence Remarks: Speckled Rattlesnake seen on Skyline Trail at 9000 elevation;; Coordinate Uncertainty in Meters: 488.00000.

GBIFID: 3773001892; Occurrence Remarks: Found this dude mid to late morning. Probably between 8:30-11:00am. I donΓÇÖt know the precise time so I put midnight as to not impair the quality of this report. The date is correct.;; Coordinate Uncertainty in Meters: 3301.00000.

GBIFID: 3802616683; Occurrence Remarks: Found by @tothemax and @brandont91311;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 3802363109; Occurrence Remarks: found stretched out on the side of the road at dusk (photos 5-6). Was relatively mild tempered, and hardly rattled at all. duplicate of https://www.inaturalist.org/observations/117934891;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 3858710939; Occurrence Remarks: My lifer Southwestern Speckled Rattlesnake.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3858511771; Occurrence Remarks: Road cruised these two right next to each other. A Ruber and a Spec within 15 feet.;; Coordinate Uncertainty in Meters: 5541.00000.

GBIFID: 3858751303; Occurrence Remarks: Hollywood actor and part time Morongo resident, Udo Kier shared this photo of a Speckled rattlesnake killed by his gardener.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1847556829; Occurrence Remarks: The snake was tan, brown, and peach colored, The colors are a little blown out in this photo;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1088920897; Occurrence Remarks: Possibly gravid female seen along the side of the trail.;; Coordinate Uncertainty in Meters: 1803.00000.

GBIFID: 3903091550; Occurrence Remarks: rattlesnake coiled up in the shade under a bush midday (head at upper left); digitized from slide;; Coordinate Uncertainty in Meters: 8.00000.

Riverside, California: 33.808581, -116.637167: : 7/19/2022: Sendy Hern├índez Orellana Barrows: 19 Jul 2022 :

GBIFID: 3912274309; Occurrence Remarks: Basking along the dirt road;; Coordinate Uncertainty in Meters: 44.00000.

GBIFID: 3912109658; Occurrence Remarks: Seen at a rest stop off I 10, photos by Dustin Bellinger;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3925033130; Occurrence Remarks: Rattlesnake in dense vegetation, couldnt safely get much closer for better photo;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3925275434; Occurrence Remarks: Not sure of ID, suggestion welcome.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3947670562; Occurrence Remarks: Lifer speck;; Coordinate Uncertainty in Meters: 5278.00000.

GBIFID: 3961002992; Occurrence Remarks: My absolute pleasure to use a hook to remove this beautiful snake from the road.;; Coordinate Uncertainty in Meters: 121.00000.

GBIFID: 1883492662; Occurrence Remarks: near skull rock hiking trail head parking lot;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4034951902; Occurrence Remarks: Found on hike in black star canyon;; Coordinate Uncertainty in Meters: 535.00000.

GBIFID: 4046248980; Occurrence Remarks: @anudibranchmom s recent sighting made me go back and look at my own, which made me realize that for some reason Id combined two sightings into one. That is now rectified. This was the second, smaller Speck that I saw that day. This one was certainly not full grown, but still bigger than a bagel.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4076129726; Occurrence Remarks: Unsure specific species;; Coordinate Uncertainty in Meters: 98.00000.

GBIFID: 4076398770; Occurrence Remarks: Scared the shit out of me while bouldering;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4091541591; Occurrence Remarks: Rattlesnake, ~3.5ΓÇÖ long;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4102688006; Occurrence Remarks: 12 long. First one I have seen on a residential street on the West end of Morongo Valley.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1899772098; Occurrence Remarks: A 6 to 8 inch juvenile.;; Coordinate Uncertainty in Meters: 73514.00000.

GBIFID: 4103112365; Occurrence Remarks: vargas bioblitz 042923;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4102989480; Occurrence Remarks: Beautiful grey speck;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4127244434; Occurrence Remarks: Two C. pyrrhus copulating.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4126805908; Occurrence Remarks: Sunning on asphalt;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4126859473; Occurrence Remarks: Joshua Tree NP, Lost Horse Mine trail;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 1913190250; Occurrence Remarks: This individual has been coming out every few days, and seems to be foraging tonight.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1913190249; Occurrence Remarks: This individual has been coming out every few days.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4127287797; Occurrence Remarks: Immediately turned around and retreated back down a hole, then rattled for like 5 minutes in hiding.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4137822610; Occurrence Remarks: DOR at lake pleasant north.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4137710083; Occurrence Remarks: In campground bathroom overnight thru early morning;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4138623821; Occurrence Remarks: My husband came home to find this nice surprise in the kitchen today ≡ƒÿ│≡ƒÿ▒. I didnΓÇÖt know they could climb. He chased it outside.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4153862032; Occurrence Remarks: Pretty sure this is the same individual I saw earlier today.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4172131705; Occurrence Remarks: Under an AC unit;; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.089031, -116.113036: : 8/1/2023: burgundyreptilesjr: 1 Aug 2023 :

GBIFID: 4172210629; Occurrence Remarks: DOR crispy jerky found on the side of the road while stopped;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4171505723; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 4171553039; Occurrence Remarks: Appeared to be a young snake;; Coordinate Uncertainty in Meters: 146.00000.

San Bernardino, California: 34.086878, -116.257465: : 9/2/2023: Boaz Benaiah Solorio: 2 Sep 2023 :

GBIFID: 4413977878; Occurrence Remarks: Crossing Pinto Basin Rd in Joshua Tree National Park;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4420908626; Occurrence Remarks: Big Morongo canyon, approx 1 mi before trail goes into private land.;; Coordinate Uncertainty in Meters: 109.00000.

GBIFID: 4431113289; Occurrence Remarks: Found while moving wood pile;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1143529677; Occurrence Remarks: A southwest speckled rattlesnake was found about 8:40 a.m. stretched out along a sandy patch of soil. Temperature was about mid-70s. It did not move while we watched it.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1143542429; Occurrence Remarks: Found under the large air-conditioning unit in the backyard.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 4506364461; Occurrence Remarks: Approx 2.5ft+ length. Basking in the sun and retreated with display and moved away with loud and long warning into brush. May have been disturbed due to flood waters in desert area. *70 degrees / sunny.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4528233900; Occurrence Remarks: Rattlesnake on the Canyon Loop, Randall Henderson Trail, Palm Desert cove area, California. Apparently a younger snake which I estimate to have been approximately 18 inches in length. Not sure of species, must research.;; Coordinate Uncertainty in Meters: 69.00000.

GBIFID: 4600147504; Occurrence Remarks: Young snake, note little nub rattle lol;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2006049303; Occurrence Remarks: These two caused a stir as the were locked up along the side of a trail.;; Coordinate Uncertainty in Meters: 24.00000.

GBIFID: 2006049304; Occurrence Remarks: This old timer has lived in the same hole for years. I catch college kids killing rattlesnakes with rocks in this area often. I hope he hasnÆt became a victim of the educated children yet.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4606992792; Occurrence Remarks: Keeping an eye out under brush, this guy was slowly crossing the trail right in front of me. Coiled and rattled only when it got under a shrub.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4852932524; Occurrence Remarks: Found this handsome devil basking on the road, ushered him across before I drove away. The park needs more animal crossing notice signs;; Coordinate Uncertainty in Meters: 379.00000.

GBIFID: 4946019037; Occurrence Remarks: 1 of the 2 seen today;; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.07331, -116.389185: : 5/7/2024: Nathaniel Green: 7 May 2024 :

San Bernardino, California: 34.0624, -116.217718: : 5/8/2024: Cameron W Barrows: 8 May 2024 :

GBIFID: 4863719243; Occurrence Remarks: Found when I was in Palm Springs under the shade. It was during the day and the weather was hot;; Coordinate Uncertainty in Meters: 10072.00000.

GBIFID: 4863736290; Occurrence Remarks: i was hiking along the mtn ridge bewteen Orange and Riverside Counties and this snake (+/- 3 long) traveled across the path ahead of me ...it was following the path of another snake ...i dont know which species it is, but it was calm, never rattled or postured up, only flattened itself ..it waited about 1-1/2 minutes to keep travelling after i was out of its periphary.;; Coordinate Uncertainty in Meters: 305.00000.

GBIFID: 4950590406; Occurrence Remarks: See 2.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 4872054689; Occurrence Remarks: Curled up by a river. Dont think its a red diamond rattlesnake. Couldnt see if there were black and white stripes near the rattle either though.;; Coordinate Uncertainty in Meters: 2805.00000.

Riverside, California: 33.95489, -116.636586: : 5/27/2024: Alexander Gregory Mason: 27 May 2024 :

GBIFID: 4875069562; Occurrence Remarks: Spotted along the Geology Tour Road in Joshua Tree NP. Was hiding under the pictured rock in very close proximity to the Pleasant Valley back country camping board.;; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.0413, -116.295353: : 6/23/2024: Spider Jane Fawke: 23 Jun 2024 :

GBIFID: 4936091025; Occurrence Remarks: Joshua Tree;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4909136978; Occurrence Remarks: Very nice pink phase;; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.652437, -117.409088: : 7/9/2024: california_every_reptile: 9 Jul 2024 :

GBIFID: 2237519668; Occurrence Remarks: Tail end of snake was sticking out from under skirt of palm.;; Coordinate Uncertainty in Meters: 20.00000.

Riverside, California: 33.835933, -117.617905: : 3/27/2026: Navneet Kaur: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 2238868747; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus pyrrhus) crossing the entrance to the parking lot for the Barker Dam/Wall Street Mill trails. Made sure he crossed the road safely.;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 4935768093; Occurrence Remarks: Dead in road.;; Coordinate Uncertainty in Meters: 1803.00000.

GBIFID: 4937044549; Occurrence Remarks: Injured in road, possibly not fatally.;; Coordinate Uncertainty in Meters: 1803.00000.

San Bernardino, California: 34.046453, -116.403006: : 9/2/2024: Jeremiah Degenhardt: 2 Sep 2024 :

GBIFID: 4946015171; Occurrence Remarks: Full size adult speckled rattlesnake;; Coordinate Uncertainty in Meters: 3910.00000.

GBIFID: 4946229305; Occurrence Remarks: Injured but should be ok. Helped off the road.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4950462540; Occurrence Remarks: There are two C. pyrrhus in the photo.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4950300165; Occurrence Remarks: I found it while herping at night. It made some slight movement which I initially attributed to wind. However, I decided to investigate anyway and saw it on the side of the road. I think either sidewinder or speckled rattlesnake baby;; Coordinate Uncertainty in Meters: 27512.00000.

GBIFID: 4949882041; Occurrence Remarks: Pink;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4950604706; Occurrence Remarks: location not exact;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 2239053010; Occurrence Remarks: Snake was found on dirt road....dead. Put on side of road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2242921758; Occurrence Remarks: Found in Murray canyon, of The Palm Springs Indian canyons;; Coordinate Uncertainty in Meters: 894.00000.

GBIFID: 2244292418; Occurrence Remarks: RICOH IMAGING Joshua Tree National Park, after the termination of the maintained lost palms oasis trail in the boulder-strewn area near the old spring.;; Coordinate Uncertainty in Meters: 28.00000.

GBIFID: 2251870886; Occurrence Remarks: It looked like the wood rat (Neotoma lepida) had already been bitten. It was not moving well and had labored breathing. The rattlesnake was slowly following the exact scent trail. After this photo, they disappeared under the steps, so IΓÇÖm not sure how it turned out.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2251892682; Occurrence Remarks: the lighter snake on the left then climbed over the darker snake on the right to get under the house. the darker snake on the right remained unmoving for at least another 30min;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5037215781; Occurrence Remarks: Could be an individual IΓÇÖve seen before;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 5062959033; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 3000.00000.

GBIFID: 4936163617; Occurrence Remarks: Joshua Tree National Park;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2251925961; Occurrence Remarks: Probably one of the two that were hanging out just outside this panel retap days ago;; Coordinate Uncertainty in Meters: 19.00000.

GBIFID: 2251930985; Occurrence Remarks: Probably the same pair as on 5/26/19 in observation # 25775761 Apparently they mated another couple of says later in # 26024909;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2251959810; Occurrence Remarks: These two have been hanging out near the house for the last 3-4 days. Guess they are a couple.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 891150406; Occurrence Remarks: Speckled Rattlesnake (Crotalus mitchellii), Lost Palms Oasis Trail, Joshua Tree National Park, Riverside County, California - May 2009.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2252029418; Occurrence Remarks: Snake did have rattles on the tail. Not great photos.;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.067792, -116.047736: : 6/5/2019: bighornsheepgirl: 5 Jun 2019 :
GBIFID: 2252072002; Occurrence Remarks: With the white and black tail IΓÇÖm guessing itΓÇÖs a western diamondback;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2265817229; Occurrence Remarks: One of three juveniles on the same trail;; Coordinate Uncertainty in Meters: 2195.00000.

GBIFID: 2265820770; Occurrence Remarks: This young snake was resting with its head under a rock and its body exposed. It was very relaxed and did not respond to us at all. From its girth I would guess that it recently ate and was digesting its meal.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2265888304; Occurrence Remarks: Road Kill.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 5133149349; Occurrence Remarks: Found in the lost palms oasis in Joshua Tree. I wasnΓÇÖt able to take a better picture, as I didnΓÇÖt want to scare it. It looks young without a developed rattle. My friend who loves snakes thinks itΓÇÖs a Tiger Rattlesnake but IΓÇÖm not sure as their habitat doesnΓÇÖt appear to reach this far west as they are found more in Nevada. I suspect it is a Southern Pacific Rattlesnake. Young so its pattern hasnΓÇÖt fully developed.;; Coordinate Uncertainty in Meters: 339.00000.

GBIFID: 2269252750; Occurrence Remarks: Red diamondback or speckled?;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 2273310396; Occurrence Remarks: Dead on road, inside JTNP, Utah Trail Rd., mike marker 4;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2273319200; Occurrence Remarks: After seeing a dead one this morning (fresh roadkill) it was nice to see one alive on my hike;; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.055133, -116.396942: : 5/3/2025: sierrawildflower: 3 May 2025 :

San Bernardino, California: 34.055145, -116.407212: : 5/3/2025: sierrawildflower: 3 May 2025 :
GBIFID: 5154237171; Occurrence Remarks: Wedged deep into rocks by the summit benchmark and rattling up a storm. CouldnΓÇÖt get a picture of itΓÇÖs body deep in the shadow of the crevice a maintain a safe distance.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2283063473; Occurrence Remarks: At the end of my hike, returning to the car, of Desert Queen Mine area. I saw 2 rattlesnakes on my 2 hour (4 mile) hike. Hike: 5pm-7pm. Low-mid 80ΓÇÖs.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2283062759; Occurrence Remarks: Hard to capture the size of it, but it was a juvenile, not very big around, but it was long. Desert Queen Mine area;; Coordinate Uncertainty in Meters: 57.00000.

Riverside, California: 33.767586, -117.510048: : 5/2/2025: california_every_reptile: 2 May 2025 :

GBIFID: 2283097039; Occurrence Remarks: Black Rock Campground by West Side Trail entrance;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2283114488; Occurrence Remarks: When I first saw it, it was stretched out. Then it coiled up and rattled while hiding in the brush (the second picture). Then it turned around and went down the hole (the first picture). 5th rattlesnake IΓÇÖve seen this week in JTNP. @Lost Horse Mine hike;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2283115281; Occurrence Remarks: The 6th rattlesnake IΓÇÖve seen in JTNP this week. All have been seen between 5pm and 7pm. @Lost Horse Mine hike;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5154507764; Occurrence Remarks: Rattled and stance before slithering off trail when I got within 5 ft of it.;; Coordinate Uncertainty in Meters: 9.00000.

San Bernardino, California: 34.092183, -117.03575: : 7/4/2019: kclarksdnhmorg: 4 Jul 2019 :
GBIFID: 3079797636; Occurrence Remarks: Dead on road.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 5167956835; Occurrence Remarks: While moving this snake off the road I ran into another rattlesnake right next to where he was heading (https://www.inaturalist.org/observations/282306367).;; Coordinate Uncertainty in Meters: 30.00000.

GBIFID: 2283180189; Occurrence Remarks: Under a rock;; Coordinate Uncertainty in Meters: 32773.00000.

Riverside, California: 33.719905, -117.424888: : 5/2/2025: california_every_reptile: 2 May 2025 :

GBIFID: 1831111538; Occurrence Remarks: Baby rattlesnake;; Coordinate Uncertainty in Meters: 110.00000.

GBIFID: 5187997575; Occurrence Remarks: @scottdwhite found next to cedar spring before log crossing. It appears there is a vestigial claw just before the rattle. Is this possible in this species?;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2294481145; Occurrence Remarks: it was out drinking during a quick summer storm/rain;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2294483737; Occurrence Remarks: This one came out just after a brief rain;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2294483413; Occurrence Remarks: Came out during a thunderstorm to drink;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1914250227; Occurrence Remarks: - https://www.herpmapper.org/voucher/6475/full.jpg;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5206631678; Occurrence Remarks: Rattlesnake according to nearby Park Ranger.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 1291072029; Occurrence Remarks: I only realized there was a snake about a foot from my face after taking this picture and looking back at the tree. Looked like a really big lizard at first..similar colors. Was coiled up and very still blending in with the tree. Soft, neutral colors with a faint pattern. Colors were light gray, cream, and light sandy brown...Triangle pattern. Bulging eyes at top and high nostrils... Did not move or rattle. Located on middle left side of photo.;; Coordinate Uncertainty in Meters: 110.00000.

GBIFID: 2311324215; Occurrence Remarks: Dead on side of road, light pinkish coloration, very pretty. The rattles seem to be gone?;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 5231576277; Occurrence Remarks: Sitting at the entrance of a desert tortoise burrow;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5237682177; Occurrence Remarks: I saw this snake while cleaning trash from the Chiriaco Summit east bound i10 onramp. It was very content not to move. Maybe molting? Or just eaten something?;; Coordinate Uncertainty in Meters: 56.00000.

GBIFID: 2331878386; Occurrence Remarks: Dead in frontage road;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2331908361; Occurrence Remarks: Saw it in the bike lane on the road. There was a turnout just ahead so I pulled over, got my flashlight out and walked over to take a pic. I wasnΓÇÖt sure if it had been run over-luckily it hadnΓÇÖt! It was headed in the right direction too, away from the street and into the wilderness. Not as big as other speckledΓÇÖs IΓÇÖve seen. I think it might still be growing.;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.066656, -116.024369: : 8/5/2019: bighornsheepgirl: 5 Aug 2019 :
GBIFID: 2331927541; Occurrence Remarks: Safely crossed the road, I pulled over to get a pic with my flashlight in hand. Zoomed in with my camera. DidnΓÇÖt rattle at me. Pretty hot out (95-97 degrees at 8:30pm).;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 1269556205; Occurrence Remarks: Found while hiking from Snow Creek to palm oasis.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1269556222; Occurrence Remarks: Found while hiking from Snow Creek to palm oasis.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2397605658; Occurrence Remarks: This one seemed to be out for a stroll after breakfast. Followed it about 60m until it decided to crawl under the air conditioner.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 2397679875; Occurrence Remarks: Rattlesnake seen on Pushwalla Palms trail. Probably about half an inch diameter. Light and dark gray pattern.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4935763027; Occurrence Remarks: Joshua Tree;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2429329057; Occurrence Remarks: Recent DOR. Tail still twitching. One of three snakes seen in 4 days at Joshua Tree National Park. Sadly, all were roadkill.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2429329761; Occurrence Remarks: One of three snakes seen in 4 days at Joshua Tree National Park. Sadly, all were roadkill.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1291104411; Occurrence Remarks: Saw this little rattlesnake in the middle of the super busy Skyline Drive trail near the trailhead. We were able to scare it off the road and into the ditch full of bushes and rocks -- much safer for it there. I was excited, never seen this species of rattlesnake before.;; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 1945473562; Occurrence Remarks: Cottonwood Campground;; Coordinate Uncertainty in Meters: 3533.00000.

GBIFID: 2563488869; Occurrence Remarks: A dead southwestern speckled rattlesnake was found along the side of the Covington Flats Road in Joshua Tree National Park.;; Coordinate Uncertainty in Meters: 500.00000.

GBIFID: 2574264409; Occurrence Remarks: baby rattlesnake ?;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 2579235174; Occurrence Remarks: North Indio Hills;; Coordinate Uncertainty in Meters: 2115.00000.

GBIFID: 2620016564; Occurrence Remarks: More details about this trip through the deserts can be read here: Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 2619878885; Occurrence Remarks: This one moved into that cholla fast enough that I couldnΓÇÖt get a photo of the whole snake, but It should still be possible to tell what it is.;; Coordinate Uncertainty in Meters: 10.00000.

Riverside, California: 33.788844, -116.38794: : 4/3/2020: Friends of the Desert Mountains: 3 Apr 2020 :
GBIFID: 2619897929; Occurrence Remarks: M2E64L190-190R399B413;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 2619888743; Occurrence Remarks: Saw a patchnose snake and a gopher snake as well on this 30 minute hike.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 2620119609; Occurrence Remarks: Beautiful 2ΓÇÖ-3ΓÇÖ rattlesnake under granite boulder.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2626341439; Occurrence Remarks: A Speckled Rattlesnake seeking some shade underneath a juniper tree. The snake was coiled and rattling his tail in order to maintain protection. It is a tan color with dark brown blotches along the topside of the snake. This species in particular is endemic to the Southwestern United States, and is adapted to its environment with the coloration that blend in with rocks and dirt. The tail was hidden as it was coiled up, by typically the male snakes have longer and darker tails than the females.;; Coordinate Uncertainty in Meters: 89.00000.

GBIFID: 2634429269; Occurrence Remarks: The photos arenΓÇÖt great but if you look closely, there are two individuals there - a male courting a female.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2634456534; Occurrence Remarks: Found dead, draped over a log. Large individual around 3+ feet;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 2634109162; Occurrence Remarks: Gravid;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 2634319063; Occurrence Remarks: 2 of them in the rock burrow.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 891031867; Occurrence Remarks: Found this nice looking specimen during a field outing as part of class I took at Joshua Tree on Snakes of California. Rest of class came over and took photos as well and it just sat still the whole time.;; Coordinate Uncertainty in Meters: 11.10000.

GBIFID: 3067853935; Occurrence Remarks: Bedford Peak;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453504008; Occurrence Remarks: Lost Horse Mine loop trail, near three old mine shafts;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1453503881; Occurrence Remarks: Lost Horse Mine loop trail, near three old mine shafts;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 1453510331; Occurrence Remarks: Boyd Deep Canyon Reserve;; Coordinate Uncertainty in Meters: 1004.00000.

GBIFID: 3067666026; Occurrence Remarks: Almost missed seeing this one basking on the trail in front of me until the last second, proceeded to slither off and rattle at me from under shrub cover. Ridgeline leading to Modjeska Peak, just over 5000;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2826487425; Occurrence Remarks: Under guardrail.. Turned him around and escorted off highway.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 1455584763; Occurrence Remarks: ???;; Coordinate Uncertainty in Meters: 368.00000.

GBIFID: 1586091366; Occurrence Remarks: Found underneath a tree, actively moving in sunny spots along leaf-litter. Juvenile rattlesnake with first button; reddish coloration.;; Coordinate Uncertainty in Meters: 195.00000.

GBIFID: 1562886979; Occurrence Remarks: Copper-colored rattlesnake with small brown spots on back in no particular pattern.;; Coordinate Uncertainty in Meters: 1925.00000.

GBIFID: 2860258322; Occurrence Remarks: On private property with permission of the landowner.;; Coordinate Uncertainty in Meters: 28902.00000.

GBIFID: 1500301022; Occurrence Remarks: Urged it across the road before other cars came.;; Coordinate Uncertainty in Meters: 500.00000.

Riverside, California: 33.735221, -115.807024: : 4/5/2026: B. Gray: 5 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 2864657092; Occurrence Remarks: CanΓÇÖt upload videos so hereΓÇÖs a screenshot from a video I took a couple months ago in Palm Springs-ish area;; Coordinate Uncertainty in Meters: 3386.00000.

GBIFID: 1945474671; Occurrence Remarks: San Bernardino County, California, US;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2898523778; Occurrence Remarks: While driving on tour this C mitch came out to greet everyone. Went under Hummer and continued on his way...;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2901736930; Occurrence Remarks: Insitu copulating specks under concrete foundation. Discovered while collecting brass casings.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2963830565; Occurrence Remarks: Insitu - Discovered while painting at the Joshua Tree Railroad Museum;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1563446870; Occurrence Remarks: 2 Adults observed at this site by Rich Rang and I;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 2999051874; Occurrence Remarks: Also referred to as Crotalus mitchellii pyrrhus.;; Coordinate Uncertainty in Meters: 296.00000.

GBIFID: 899980784; Occurrence Remarks: This speckled rattlesnake was in a wash that cross the Split Rock Nature Trail in Joshua Tree National Park.;; Coordinate Uncertainty in Meters: 65402.00000.

GBIFID: 3018068739; Occurrence Remarks: Scanned from old slide. Date is correct; time is not. Location is from notes and memory, and thus imprecise.;; Coordinate Uncertainty in Meters: 423.00000.

San Bernardino, California: 34.072696, -116.390121: : 6/28/2017: jenniferofthemeadow: 28 Jun 2017 :

GBIFID: 3039455400; Occurrence Remarks: Rattlesnake;; Coordinate Uncertainty in Meters: 3652.00000.

GBIFID: 3039441377; Occurrence Remarks: Rattlesnake - being harassed by cactus wrens;; Coordinate Uncertainty in Meters: 10344.00000.

GBIFID: 1584424852; Occurrence Remarks: Seen with tortoise. Unseasonably cool day. Appeared to be warming and withdrew as the sun emerged from clouds.;; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.648117, -116.376953: : 3/23/2026: Chris Tracy: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3070433714; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus pyrrhus) 4-5ΓÇÖ long Rattlesnake in Fried Liver Wash, rattling as he went under brush to hide from clumsy humans who almost stepped on him. 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 https://californiaherps.com/snakes/pages/c.m.pyrrhus.html;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1584433344; Occurrence Remarks: This was in woody debris in a sandy wash along the Mastodon Peak loop. It was light brown with a clear dark brown pattern along its back. It had clear tail rings which seemed black and white at the time but dont look it in the (admittedly terrible) photos, which is why I am adding as an unidentified rattlesnake. It had taken off well in advance of my passing, so I did not see the head, and it seemed to sense when I spotted it and immediately gave me a good rattle and paused moving through the debris. I respected the warning, so the distance and speed with which it disappeared account for the remarkably poor photos.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079649709; Occurrence Remarks: Found by Daniel Quinones;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 3090926474; Occurrence Remarks: 16-20 inches estimated length, slithered sideways off trail. Did not appear to have ΓÇ£hornsΓÇ¥ above eyes. Ranger suggested Mojave Green or Southwestern Speckled Rattlesnake.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1586930862; Occurrence Remarks: Hiding behind the critter proof mesh under the air conditioner, where the wood rats hang out.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1640086376; Occurrence Remarks: Neonate (car key for scale);; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1640086678; Occurrence Remarks: This may be the same individual I posted earlier. I thought it was too far away to be the same individual, but it does look quite similar (e.g. the dark spots on the head are a similar pattern);; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1640106509; Occurrence Remarks: This one came out for a drink during the thunderstorm.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1640114411; Occurrence Remarks: It (finally) found mouse poop corner Hoping it comes back every day;; Coordinate Uncertainty in Meters: 2064.00000.

GBIFID: 3124494838; Occurrence Remarks: North Fork San Jacinto River;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3302108312; Occurrence Remarks: I almost stepped on it;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3302529288; Occurrence Remarks: I actually almost walked over the ledge it was under, close call.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 3330821529; Occurrence Remarks: Had raccoon striped tail;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 3333267880; Occurrence Remarks: Red and gray specimens hanging out under the air conditioner.;; Coordinate Uncertainty in Meters: 22.00000.

GBIFID: 4852304018; Occurrence Remarks: Seemed more agressive than the usuals. Tail and head seemed smaller also.;; Coordinate Uncertainty in Meters: 374.00000.

GBIFID: 4852757985; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 132.00000.

San Bernardino, California: 34.072158, -116.402122: : 9/14/2021: Jacqueline Raiford: 14 Sep 2021 :

GBIFID: 1805419195; Occurrence Remarks: rattlesnake at the side of the road, which species?;; Coordinate Uncertainty in Meters: 2869.00000.

GBIFID: 3399344040; Occurrence Remarks: Resting near road, cool morning, 79 degrees F;; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Guide identified.; Coordinate Uncertainty in Meters: 11.10000.

Riverside, California: 33.809238, -116.636803: : 8/20/2025: quandary: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.808614, -116.637214: : 8/20/2025: Pete Schwartz: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Riverside, California: 33.9572, -116.645492: : 8/20/2025: Emmett: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Inside dog park :0; Coordinate Uncertainty in Meters: 15.00000.

Riverside, California: 34.027927, -116.334927: : 7/6/2026: Christopher Carlin: 6 Jul 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.067278, -116.364972: : 10/8/2025: Diana: 8 Oct 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.732307, -112.205257: : 4/24/2026: howard_lo: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 18.00000.

Occurrence Remarks: Temperature was around 80; Coordinate Uncertainty in Meters: 48.00000.

Riverside, California: 33.759762, -116.549619: : 9/4/2025: Chris W.: 4 Sep 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.732307, -112.205277: : 4/24/2026: howard_lo: 24 Apr 2026 ; Coordinate Uncertainty in Meters: 32.00000.

Occurrence Remarks: This snake was found dead by JTNP ranger. :(; Coordinate Uncertainty in Meters: 6.00000.

Riverside, California: 33.647842, -116.376113: : 7/15/2026: Chris Tracy: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

Riverside, California: 33.647837, -116.376137: : 7/15/2026: Chris Tracy: 15 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Riverside, California: 33.808639, -116.637217: : 8/20/2025: Colin Barrows: 20 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Orange, California: 33.681781, -117.587931: : 7/5/2026: Richard Robbins: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 28930.00000.

Riverside, California: 33.840133, -116.613519: : 4/11/2026: James Roberts: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.192211, -116.474226: : 5/6/2018: Spider Jane Fawke: 6 May 2018 :

Occurrence Remarks: Juvenile, about 1 foot long. Based on observations in this area, this may be C. ruber. I donΓÇÖt see many juveniles this small.; Coordinate Uncertainty in Meters: 3.00000.

Mohave, Arizona: 35.019071, -114.29527: : 10/15/2025: Madison Lutes: 15 Oct 2025 ; Coordinate Uncertainty in Meters: 28734.00000.

San Bernardino, California: 34.162766, -116.224585: : 3/15/2026: Dillon Alexander: 15 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Mohave, Arizona: 35.583113, -114.260195: : 7/21/2026: jsumler: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Bernardino, California: 34.326347, -116.388717: : 5/20/2024: busiak13: 20 May 2024 ; Coordinate Uncertainty in Meters: 4.00000.

Mohave, Arizona: 35.582912, -114.2601: : 8/25/2025: jsumler: 25 Aug 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Clark, Nevada: 35.305799, -114.72633: : 4/13/2026: Andrew Campos: 13 Apr 2026 ; Coordinate Uncertainty in Meters: 28706.00000.

Clark, Nevada: 35.709745, -114.805968: : 5/16/2026: Stephenie Thomas: 16 May 2026 ; Coordinate Uncertainty in Meters: 215.00000.

Clark, Nevada: 35.738024, -114.834788: : 5/16/2026: Stephenie Thomas: 16 May 2026 ; Coordinate Uncertainty in Meters: 430.00000.

Clark, Nevada: 35.779982, -114.857167: : 5/16/2026: Stephenie Thomas: 16 May 2026 ; Coordinate Uncertainty in Meters: 860.00000.

Occurrence Remarks: Two Southwestern Speckled Rattlesnakes coiled together.; Coordinate Uncertainty in Meters: 2.00000.

San Bernardino, California: 34.115812, -116.445728: : 4/3/2026: Howard Friedman: 3 Apr 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.81657, -115.340172: : 5/23/2026: nehavijay: 23 May 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

Coconino, Arizona: 36.238123, -112.692023: : 4/16/2026: boogan_boy: 16 Apr 2026 ; Coordinate Uncertainty in Meters: 1156.00000.

Occurrence Remarks: Desert View Conservation Area, Joshua Tree; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.186194, -116.072633: : 3/28/2026: Sierra Glassman: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Lincoln, Nevada: 36.906708, -114.301047: : 5/28/2026: dhorowski: 28 May 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.751983, -116.344977: : 4/11/2026: Bradley Rydholm: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

San Bernardino, California: 34.680503, -116.957787: : 4/20/2026: James: 20 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.803597, -115.619613: : 4/12/2026: elliekuskie: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

San Bernardino, California: 34.386341, -116.702835: : 4/21/2026: bramrole: 21 Apr 2026 ; Coordinate Uncertainty in Meters: 11.00000.

San Bernardino, California: 34.135443, -116.059048: : 4/25/2026: jyd02135: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: C.pyrrhus or C.stephensi; Coordinate Uncertainty in Meters: 28447.00000.

Clark, Nevada: 36.5375, -114.100519: : 4/25/2026: Andrew Dudley: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 11.10000.

San Bernardino, California: 34.148962, -116.453249: : 3/27/2026: jgoerrissen: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Occurrence Remarks: Juvenile Southwestern Speckled Rattlesnake (Crotalus pyrrhus), Mohave County, Arizona; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 34.536572, -115.206445: : 4/11/2026: candygram4mongo: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 4126962081; Occurrence Remarks: We saw three rattlesnakes while camping there.;; Coordinate Uncertainty in Meters: 724.00000.

GBIFID: 3860339770; Occurrence Remarks: Second of three observed;; Coordinate Uncertainty in Meters: 61.00000.

Occurrence Remarks: 3 ft to 4ft long; Coordinate Uncertainty in Meters: 6932.00000.

San Bernardino, California: 34.108285, -116.4784: : 2/27/2026: adventurerob: 27 Feb 2026 ; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 35.084673, -115.516563: : 4/12/2026: Clara: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 56749.00000.

San Bernardino, California: 34.108575, -116.172125: : 3/27/2026: valarrya: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.905135, -116.751979: : 4/6/2026: Tom Mills: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

San Bernardino, California: 34.75191, -116.345043: : 4/11/2026: William Mason: 11 Apr 2026 ; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.215025, -116.334389: : 5/2/2026: ymp: 2 May 2026 ; Coordinate Uncertainty in Meters: 179.00000.

San Bernardino, California: 34.671153, -116.984903: : 5/1/2026: Josh: 1 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.881817, -117.25283: : 5/6/2026: ac7373greenvw: 6 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 35.048695, -115.398042: : 5/5/2026: Tom: 5 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.098964, -116.178467: : 5/8/2026: dustycactus: 8 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Clark, Nevada: 36.017817, -115.022364: : 5/8/2026: Claire Clarke: 8 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Dead on road DOR; Coordinate Uncertainty in Meters: 2.00000.

Washington, Utah: 37.051083, -113.954116: : 5/9/2026: Joey Mugleston: 9 May 2026 ; Coordinate Uncertainty in Meters: 28447.00000.

Clark, Nevada: 36.436017, -114.579513: : 2/9/2026: Stacy Smith: 9 Feb 2026 ; Coordinate Uncertainty in Meters: 5.00000.

Mohave, Arizona: 35.052825, -114.563569: : 4/9/2026: hap_herpson: 9 Apr 2026 ; Coordinate Uncertainty in Meters: 258.00000.

San Bernardino, California: 35.512857, -115.588003: : 3/31/2026: bangert301: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

San Bernardino, California: 34.119067, -116.111914: : 5/1/2026: njdujnic: 1 May 2026 ; Coordinate Uncertainty in Meters: 59.00000.

San Bernardino, California: 34.171603, -116.554145: : 3/31/2026: Susan: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Clark, Nevada: 36.19506, -114.662207: : 9/18/2025: EscalanteSlim: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.214944, -116.334419: : 9/25/2025: ymp: 25 Sep 2025 ; Coordinate Uncertainty in Meters: 186.00000.

Clark, Nevada: 35.227688, -114.693183: : 5/9/2026: Bryan Hamilton: 9 May 2026 ; Coordinate Uncertainty in Meters: 37.00000.

San Bernardino, California: 34.121047, -116.134164: : 5/12/2026: James: 12 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks: Juvenile; Coordinate Uncertainty in Meters: 5237.00000.

San Bernardino, California: 35.047013, -115.395715: : 3/29/2026: Andrea Carpio: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 223.00000.

Occurrence Remarks: Found by my friend while herping together.; Coordinate Uncertainty in Meters: 28734.00000.

San Bernardino, California: 34.099925, -116.179838: : 5/16/2026: dustycactus: 16 May 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.110931, -116.106955: : 5/16/2026: hpriest: 16 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.212692, -116.562355: : 3/19/2026: sidetracker: 19 Mar 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Bernardino, California: 34.096992, -116.955865: : 3/21/2026: jmkent: 21 Mar 2026 ; Coordinate Uncertainty in Meters: 150.00000.

Occurrence Remarks: I was not fast enough to get a full shot, sadly. But I did get his rear!; Coordinate Uncertainty in Meters: 31.00000.

San Bernardino, California: 34.106261, -116.334358: : 3/26/2026: Kenzie Nelson: 26 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.095852, -116.528646: : 3/27/2026: sarah_uf: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 29.00000.

Mohave, Arizona: 35.174937, -114.061823: : 3/27/2026: soonershane: 27 Mar 2026 ; Coordinate Uncertainty in Meters: 20.00000.

San Bernardino, California: 34.113931, -116.295945: : 3/28/2026: sidetracker: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.170075, -116.548789: : 3/30/2026: tclaire: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 57.00000.

San Bernardino, California: 35.043125, -115.399497: : 3/29/2026: Andrea Carpio: 29 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.809687, -115.620963: : 3/23/2026: Mark Pollock: 23 Mar 2026 ; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.16935, -116.566313: : 4/4/2026: sidetracker: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 34.169275, -116.566219: : 4/4/2026: Augie Brinker: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.16685, -116.572862: : 4/4/2026: fonxo: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 2.00000.

San Bernardino, California: 35.441118, -115.505605: : 3/30/2026: Caleb Martinez: 30 Mar 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

San Bernardino, California: 34.105968, -116.104825: : 4/7/2026: jenniferofthemeadow: 7 Apr 2026 ; Coordinate Uncertainty in Meters: 9.00000.

Lincoln, Nevada: 36.850372, -114.453408: : 4/6/2026: Matt Reala: 6 Apr 2026 ; Coordinate Uncertainty in Meters: 18.00000.

San Bernardino, California: 35.428919, -115.566379: : 3/31/2026: mikeburchett: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 28677.00000.

San Bernardino, California: 34.113953, -116.295975: : 3/28/2026: fonxo: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Clark, Nevada: 35.242868, -114.757983: : 10/18/2023: Matthew Lachiusa: 18 Oct 2023 ; Coordinate Uncertainty in Meters: 28706.00000.

San Bernardino, California: 34.741545, -116.679305: : 4/9/2025: Andrew Holycross: 9 Apr 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Mohave, Arizona: 35.764006, -113.376292: : 6/28/2025: Russell Marotzke: 28 Jun 2025 ; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.932113, -115.410543: : 6/5/2026: Nathan Swiderski: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 28762.00000.

San Bernardino, California: 34.186618, -116.298114: : 6/5/2026: KESC: 5 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.141477, -116.471731: : 6/7/2026: Joe Zarki: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Occurrence Remarks: Deceased roadkill; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.132715, -116.291038: : 4/19/2026: niravraham: 19 Apr 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

Occurrence Remarks: Pipes Cyn Rd; Coordinate Uncertainty in Meters: 28874.00000.

Mohave, Arizona: 35.879547, -113.99015: : 9/13/2025: Stephenie Thomas: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Occurrence Remarks: VERY small, coiled up only 3-4 inches in diameter; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.80353, -115.619705: : 4/12/2026: Arachnid Avery: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 1038333827; Occurrence Remarks: Beautiful snake, vertical eye slit, blue, about two feet to 3 feet in length. On shady side of plant in mid morning. He did rattle when he observed me.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1838021387; Occurrence Remarks: Found crossing road at sundown. Prenasal scales and coon tail suggest this is indeed a speckled and not a panamint.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3802363869; Occurrence Remarks: Saw while walking. Mid 80ΓÇÖs temperature wise when I parked at 6:30pm, 15 minutes prior. I also saw a Mojave Patchnose snake, but it was too quick for a photo;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3860091347; Occurrence Remarks: Large adult DOR tail still moving. Wish I could have saved him.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 3860691867; Occurrence Remarks: Vontrigger Springs, Mojave NP;; Coordinate Uncertainty in Meters: 212.00000.

GBIFID: 3858610829; Occurrence Remarks: First of three seen on this afternoon.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3858766856; Occurrence Remarks: Last of three observed;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 3858752769; Occurrence Remarks: Late afternoon. It saw me before I saw it & was kind enough to give me a rattle welcome. Beautiful specimen.;; Coordinate Uncertainty in Meters: 636.00000.

San Bernardino, California: 34.355657, -114.659318: : 7/12/2022: Margaret Gallagher: 12 Jul 2022 :

GBIFID: 3889240326; Occurrence Remarks: Escorted off roadway to wash during overcast conditions. Temp 82F;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3892289132; Occurrence Remarks: Juvenile speckled rattlesnake discovered at my house on New YearΓÇÖs Eve. Far too cold outside to survive, was rescued by a local snake relocator, put into brumation, and released in spring.;; Coordinate Uncertainty in Meters: 4265.00000.

GBIFID: 1848810001; Occurrence Remarks: Was hanging out next to a water trough that had been left out for the birds. Was probably ambushing them.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3903049205; Occurrence Remarks: Most likely a coon tail rattlesnake. Come on identify it kids.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 1088934952; Occurrence Remarks: Even though this was one of my target species for the Mojave, I literally stepped over this snake while it was basking on the trail. It rattled a few times then hid under some nearby brush.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3915420205; Occurrence Remarks: Speckled basking at 8:20 AM in the parking lot. Not too warm of a morning and the first rattlesnake sighting in a while. Very relaxed.;; Coordinate Uncertainty in Meters: 34.00000.

San Bernardino, California: 34.106109, -116.104967: : 6/27/2018: jenniferofthemeadow: 27 Jun 2018 :

San Bernardino, California: 34.582122, -117.05984: : 10/11/2022: Karol Tabarelli de Fatis: 11 Oct 2022 :
GBIFID: 3947807217; Occurrence Remarks: obs Riccardo Basani;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1088944841; Occurrence Remarks: An outstanding find by Danielle and Tony. Was across the trail but immediately retreated into a bush, which made photography a bit challenging.;; Coordinate Uncertainty in Meters: 293.00000.

San Bernardino, California: 34.830175, -115.645033: : 5/7/2014: Professor Brian Todd at UC Davis: 7 May 2014 :

GBIFID: 1457577593; Occurrence Remarks: 2 1/2 foot Speckled Rattlesnake.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4015313501; Occurrence Remarks: Mating!;; Coordinate Uncertainty in Meters: 40.00000.

GBIFID: 4029212876; Occurrence Remarks: Right next to edge of river, curled up on branch ~0.5m above ground.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 4029187398; Occurrence Remarks: This individual was undoubtedly the same one as the day before, but this time it was resting 1m+ above ground on a fallen cottonwood log (had been felled by a beaver). I was doing YBCU surveys and looking for a nest after seeing a bird carrying a leaf the day before. On this morning I looked around and didnÆt see the snake in its previous spot. I went under and around the vegetation patch to use my mirror pole to check a tree as a possible YBCU nest site. As I stepped forward to get the mirror pole up in the dense foliage, I stepped on a small branch which flung up and knocked the resting rattlesnake off the log next to my hip, where I had previously been unaware of its presence! Thankfully it didnÆt strike, but I felt bad about disturbing it. It then crawled under some dense vegetation where I got these photos.;; Coordinate Uncertainty in Meters: 28846.00000.

GBIFID: 1092885626; Occurrence Remarks: Found sunning adjacent to a black rock on a cool morning.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4080569245; Occurrence Remarks: I was about three feet away when it rattled. Scared me, but the snake was probably more scared lol. This was my lifer speck;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4091566985; Occurrence Remarks: Seen shortly after another speckled. This one was smaller and significantly grumpier. It crawled into this crevice and just rattled until I left.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4091783014; Occurrence Remarks: Rattled a little when I was about five feet away, but it actually kept moving towards me until I stomped my feet a little. Curious snake. Didnt rattle much. Bigger than the other speckled rattlesnakes Ive seen.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4091862560; Occurrence Remarks: RX10_27430, RX10_27431, RX10_27432;; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 35.517178, -115.63294: : 5/28/2015: Stevie Kennedy-Gold: 28 May 2015 :

GBIFID: 1457577821; Occurrence Remarks: About three feet long, hit by traffic.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4111678916; Occurrence Remarks: Tail banding and pattern matches SpeckledΓÇªprob wasnΓÇÖt quite in range for PanamintΓÇªIΓÇÖll post pics from my camera (including a closeup of the tail) when I get homeΓÇª;; Coordinate Uncertainty in Meters: 4.00000.

San Bernardino, California: 35.088275, -115.545191: : 4/23/2017: Sabina Lucke Lawrence: 23 Apr 2017 :

GBIFID: 4116467604; Occurrence Remarks: Amazing eyes on this one.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1098910470; Occurrence Remarks: Found on a Granitic, Alluvial Plain area. Elevation 2800 feet.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 4129996852; Occurrence Remarks: Found as roadkill;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4138083389; Occurrence Remarks: Panamint or southwestern speckled? Found just like this in the shade, already curled up. DidnΓÇÖt move while we took photos. Low 80ΓÇÖs temperature wise at 12:33pm;; Coordinate Uncertainty in Meters: 28734.00000.

San Bernardino, California: 34.105898, -116.105037: : 9/25/2018: jenniferofthemeadow: 25 Sep 2018 :

GBIFID: 1914246594; Occurrence Remarks: Deceased;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4171960522; Occurrence Remarks: Very bad photos taken in a hurry at night as it moved off of the road. On google earth the next day I noticed that it was at the top of a large rockslide, good habitat, and only a few miles from known population. This is 2.3 miles up Hwy. 38 from the turnoff to Forest Falls.;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 4506440516; Occurrence Remarks: Specimen was found dead, perhaps dropped by a bird; wed walked through the area less than an hour before and it wasnt there at the time. Trauma visible immediately behind head.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1211973520; Occurrence Remarks: Some kind of rattlesnake?;; Coordinate Uncertainty in Meters: 1446.00000.

GBIFID: 4607556560; Occurrence Remarks: WasnΓÇÖt able to get a good shot of the head; rattled at us and moved deeper under a rock;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 3408233319; Occurrence Remarks: Saw this huge old snake while driving 80 mph on the freeway. Its a miracle it made it across 4 lanes of traffic.;; Coordinate Uncertainty in Meters: 28706.00000.

San Bernardino, California: 34.764642, -116.376836: : 4/26/2024: betweeneverytwopines: 26 Apr 2024 :

GBIFID: 4853190438; Occurrence Remarks: A pair, only one pictured;; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.118011, -116.111662: : 5/1/2024: Cameron W Barrows: 1 May 2024 :

GBIFID: 4863707714; Occurrence Remarks: eating a unknown lizard species;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4863841214; Occurrence Remarks: Tiny little one, crossing road at the tail end of dusk;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4868134763; Occurrence Remarks: In situ;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 4872089067; Occurrence Remarks: The same individual I photographed earlier this morning.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4872554245; Occurrence Remarks: courtship behavior;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 4872444576; Occurrence Remarks: Observed two Specks near the hwy on this evening. This one was absolutely eye popping !;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 4872328146; Occurrence Remarks: DOR very recent;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4872653807; Occurrence Remarks: Little baby one! πüíπüúπüíπéâπüäΦ¢ç∩╝ü;; Coordinate Uncertainty in Meters: 28762.00000.

GBIFID: 4875270007; Occurrence Remarks: Found by Grace Cadwalladerolsker, basking partially shaded near a small rock pile.;; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 4875460588; Occurrence Remarks: Found by Lauren Chan. Photos 1-2 are as found.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 2235546496; Occurrence Remarks: Up Havasu Creek. River mile 157+.;; Coordinate Uncertainty in Meters: 11.10000.

San Bernardino, California: 34.342998, -117.212114: : 6/4/2024: Sara Cristina Medina: 4 Jun 2024 :

San Bernardino, California: 34.106242, -116.105488: : 7/2/2024: jenniferofthemeadow: 2 Jul 2024 :

GBIFID: 2238928080; Occurrence Remarks: A this a gopher snake? Can anyone tell? Thanks!;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.377358, -116.217582: : 9/7/2024: Spider Jane Fawke: 7 Sep 2024 :

GBIFID: 1227736731; Occurrence Remarks: Speckled Rattlesnake Crotalus mitchelli Found on slope before wash under a boulder in the early morning. Very cold outside but the sun was beginning to come out. Around 9am;; Coordinate Uncertainty in Meters: 436.00000.

GBIFID: 1227738158; Occurrence Remarks: Crotalus, mitchellii Found between rocks during a hike at 9:05 am. Temperature high sixties low seventies.;; Coordinate Uncertainty in Meters: 193.00000.

GBIFID: 1227738625; Occurrence Remarks: The speckled rattlesnake (Vrotalus mitchelli) was found at about 9:30 A.M. with a temperature in the high 60s/low 70s Γäë;; Coordinate Uncertainty in Meters: 7074.00000.

San Bernardino, California: 34.098536, -116.199333: : 5/5/2019: bighornsheepgirl: 5 May 2019 :
GBIFID: 2242861418; Occurrence Remarks: First rattlesnake of the season (2019) while hiking for me.;; Coordinate Uncertainty in Meters: 6.00000.

San Bernardino, California: 34.623822, -117.122355: : 5/11/2024: slow_stalks_hard_hooksets: 11 May 2024 :

GBIFID: 2243000196; Occurrence Remarks: Cruised right after sunset. Quite large;; Coordinate Uncertainty in Meters: 5.00000.

San Bernardino, California: 34.619876, -117.127561: : 11/13/2024: slow_stalks_hard_hooksets: 13 Nov 2024 :

San Bernardino, California: 34.148994, -116.453234: : 6/7/2019: Joachim Gonzalez: 7 Jun 2019 :

San Bernardino, California: 35.427335, -115.667512: : 3/1/2025: california_every_reptile: 1 Mar 2025 :

GBIFID: 5088173688; Occurrence Remarks: S120_05149, S120_05150;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5104524934; Occurrence Remarks: S120_27376, S120_27377;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5104596489; Occurrence Remarks: S120_30869;; Coordinate Uncertainty in Meters: 3.00000.

San Bernardino, California: 34.146662, -116.570452: : 6/9/2019: Spider Jane Fawke: 9 Jun 2019 :

San Bernardino, California: 34.740701, -116.68135: : 4/9/2025: Andrew Holycross: 9 Apr 2025 :

GBIFID: 5133939856; Occurrence Remarks: Photos under the rock ledge were in-situ. Others taken of the same individual within a few feet of the initial location after it became disturbed by my photographic attentions. Released back under the ledge where it was found.;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 2269313963; Occurrence Remarks: dead on road;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2273255821; Occurrence Remarks: found within 20 ft of record: https://www.inaturalist.org/observations/27488644;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2273254689; Occurrence Remarks: found within 20 ft of record: https://www.inaturalist.org/observations/27488637;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 5153218959; Occurrence Remarks: Mating pair.;; Coordinate Uncertainty in Meters: 141.00000.

GBIFID: 5154721231; Occurrence Remarks: Sw speckled ..?;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 5167053135; Occurrence Remarks: Was originally seen around 10am by a Cal Poly herpetology student, who saw the snake coiled on a rock pile next to a crevice. The snake then retreated into the crevice, where it stayed for the next few hours.;; Coordinate Uncertainty in Meters: 28790.00000.

San Bernardino, California: 34.09818, -116.99476: : 5/19/2025: california_every_reptile: 19 May 2025 :

GBIFID: 5176700220; Occurrence Remarks: Double Speck.;; Coordinate Uncertainty in Meters: 28874.00000.

GBIFID: 5198919002; Occurrence Remarks: Fairly certain its a C. stephensi but the tail banding is throwing me off. Why do some panamints have black and white banding and some panamints have just the dark bands? Id greatly appreciate an explanation!;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5198984088; Occurrence Remarks: First Utah Speck. Awesome find;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 1640029596; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus).;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1913716175; Occurrence Remarks: - https://www.herpmapper.org/voucher/6642/full.jpg;; Coordinate Uncertainty in Meters: 1.11000.

Mohave, Arizona: 36.223051, -113.226743: : 4/15/2017: Rob of the wildernessvagabond.com: 15 Apr 2017 :
GBIFID: 2294548828; Occurrence Remarks: Speckled Rattlesnake Crotalus mitchellii 150-mile area, Esplanade, of the North Rim of the Grand Canyon (marker on map may be incorrect).;; Coordinate Uncertainty in Meters: 18167.00000.

GBIFID: 2350426806; Occurrence Remarks: Sorry, photos from phone not so great.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2350448699; Occurrence Remarks: One snake eating the other at Joshua Tree.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1457580695; Occurrence Remarks: Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2422898855; Occurrence Remarks: Very large 36 long or so specimen. Photo quality is bad but is definitely a speckled.;; Coordinate Uncertainty in Meters: 13.00000.

GBIFID: 1807269124; Occurrence Remarks: Speckled maybe;; Coordinate Uncertainty in Meters: 43.00000.

GBIFID: 1272096857; Occurrence Remarks: (Crotalus mitchellii pyrrhus);; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1273852714; Occurrence Remarks: Huge speckled rattlesnake seen crawling through the rocks just before dusk.;; Coordinate Uncertainty in Meters: 13.00000.

San Bernardino, California: 34.286462, -114.141136: : 6/3/2015: Michael Woodruff: 3 Jun 2015 :

San Bernardino, California: 34.096747, -116.958405: : 9/13/2019: kjexploringnature: 13 Sep 2019 :

GBIFID: 2609236546; Occurrence Remarks: 8 snakes of 7 species seen on this night;; Coordinate Uncertainty in Meters: 28762.00000.

GBIFID: 1453178573; Occurrence Remarks: Visiting a friend near Joshua Tree. Saw this outside her patio.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1453199634; Occurrence Remarks: adult southwestern speckled rattlesnake, Crotalus mitchelli pyrrhus, from western San Bernardino County, California, USA;; Coordinate Uncertainty in Meters: 300.00000.

GBIFID: 3947190364; Occurrence Remarks: These lovebirds were getting freaky in my campsite, uninvited;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2626227240; Occurrence Remarks: Found crossing a road.;; Coordinate Uncertainty in Meters: 4305.00000.

GBIFID: 2626098906; Occurrence Remarks: Location was N 35.33.388 / W 115.35.782 at 1,538 meters. This is north side of Clark Mountain on little-used birding approach. Cool and windy, about 60 F temp. Snake was approx 1 meter in length based on width of track it crossed. Pinyon / Juniper / cholla / yucca scrub. Once it sensed me, rattled continuously and moved away into dense vegetation. This solo observation report edited on 15 May 2020 replaces several duplicate postings. Apologies to my reviewers.;; Coordinate Uncertainty in Meters: 488.00000.

San Bernardino, California: 34.591972, -117.069333: : 5/15/2020: Karol Tabarelli de Fatis: 15 May 2020 :
GBIFID: 2626406287; Occurrence Remarks: ph Riccardo Basani;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2626474144; Occurrence Remarks: Dead on road DOR;; Coordinate Uncertainty in Meters: 67.00000.

GBIFID: 5198357321; Occurrence Remarks: Run over moments earlier by another vehicle.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2634136357; Occurrence Remarks: Dead on road.;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 2641349718; Occurrence Remarks: Crossing road.;; Coordinate Uncertainty in Meters: 28677.00000.

GBIFID: 2641537197; Occurrence Remarks: Likely a gravid female;; Coordinate Uncertainty in Meters: 777.00000.

GBIFID: 2802544234; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 28563.00000.

GBIFID: 4863499556; Occurrence Remarks: USA, Nevada, Clark county, Gold butte National Monument. As if abandoned mines werent dangerous enough, this one holds a Southwestern Speckled Rattlesnake (Crotalus pyrrhus);; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1453450788; Occurrence Remarks: Found this small snake body lying along the trail.;; Coordinate Uncertainty in Meters: 121.00000.

GBIFID: 1831129779; Occurrence Remarks: Found among the lava field near Pisgah Crater. Found not too far from its kill; a juvenile chuckwalla.;; Coordinate Uncertainty in Meters: 194.00000.

San Bernardino, California: 34.245857, -116.221383: : 8/8/2020: Spider Jane Fawke: 8 Aug 2020 :

GBIFID: 2850764330; Occurrence Remarks: Ran this picture by a few friends who all agree it is a speckled rattlesnake based on pattern and prevalence in the area.;; Coordinate Uncertainty in Meters: 6238.00000.

San Bernardino, California: 34.340767, -116.399205: : 9/5/2020: Spider Jane Fawke: 5 Sep 2020 :

San Bernardino, California: 34.395445, -116.338031: : 9/5/2020: Spider Jane Fawke: 5 Sep 2020 :

San Bernardino, California: 34.169383, -116.566292: : 4/4/2026: Cameron W Barrows: 4 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2883198504; Occurrence Remarks: Neonate escorted off road and headed to nearby cover at base of Joshua Tee.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 2883068563; Occurrence Remarks: 74F air temp, 82F road temp, very curious neonate;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 2901693840; Occurrence Remarks: This morning was epic. First rain in months fell just a few hours before sunrise.;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 2963824602; Occurrence Remarks: Very large individual;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 1571117461; Occurrence Remarks: not sure if this was a mojave or not. didnt budge while i was there...;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 910500325; Occurrence Remarks: This juvenile C. mitchellii was observed by a small granite boulder. Anadoltale evidence suggest it was either sunning it self or was just about to leave it cover to go hunting. It did not start to rattle until I made eye contact with this C. mitchellii after rattling for a few seconds it retreated back underneath the granite rock, which it continued to rattle from underneath.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 910500312; Occurrence Remarks: This C. mitchellii was observed crawling along the dirt near the paved road.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 910500626; Occurrence Remarks: This C. mitchellii was observed underneath a granite boulder. Located further up the granite hill side from the first C. mitchellii observed.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 910500684; Occurrence Remarks: This C. mitchellii was observed crawling along the granite hill side before dusk.;; Coordinate Uncertainty in Meters: 28818.00000.

San Bernardino, California: 34.1717, -116.5468: : 6/5/2020: th3lastbuffalo: 5 Jun 2020 :

GBIFID: 3039424369; Occurrence Remarks: Seen in August 2000 while visiting the falls. This is an old digital photo from a Sony Memory Stick.;; Coordinate Uncertainty in Meters: 172.00000.

GBIFID: 1572384368; Occurrence Remarks: Found DOR at 49 palms trailhead.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911498510; Occurrence Remarks: This C. mitchellii was observed crawling in the desert near the granite hill.;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 911498581; Occurrence Remarks: Herpetofaunal inventory of the Old Woman Mountains, UCLA Field Biology Course;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 911498534; Occurrence Remarks: Herpetofaunal inventory of the Old Woman Mountains, UCLA Field Biology Course;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1847636547; Occurrence Remarks: This C. mitchellii was observed in a ditch. Temp 85.8 Wind 10.0 mph from WSW Humidity 14% Day time High/Low - 90/52;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 1978870129; Occurrence Remarks: This C. mitchellii was observed crawling across the asphalt at 8:06 P.M. .;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 3061811800; Occurrence Remarks: Need help finding species;; Coordinate Uncertainty in Meters: 50000.00000.

GBIFID: 3079785339; Occurrence Remarks: Not quite sure what species. Juvenile;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 911507546; Occurrence Remarks: Caught and released for ucla study course;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3079916652; Occurrence Remarks: Rattle run over up to cloaca. Still moving efficiently.;; Coordinate Uncertainty in Meters: 1953.00000.

San Bernardino, California: 34.123724, -116.313066: : 5/20/2021: joeyscrittercollection: 20 May 2021 :

GBIFID: 3118441760; Occurrence Remarks: The rattlesnake was eating a Harriss Antelope Squirrel.;; Coordinate Uncertainty in Meters: 2.00000.

GBIFID: 3124646992; Occurrence Remarks: Overcast full moon not elevated.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3124664768; Occurrence Remarks: 2nd speck in just a few minutes. Very different look than the first.;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 3124933030; Occurrence Remarks: Juvenile DOR;; Coordinate Uncertainty in Meters: 122.00000.

GBIFID: 3124643332; Occurrence Remarks: DOR neonate;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1668850709; Occurrence Remarks: Very camouflaged and silent as it sat on this boulder perfectly still. Luckily noticed the pattern before jumping down on rock.;; Coordinate Uncertainty in Meters: 16300.00000.

GBIFID: 3301976173; Occurrence Remarks: Coming onto Hwy 62 in front of shooting range. Placed into habitat for photos. 11 Speck with large meal in abdomen.;; Coordinate Uncertainty in Meters: 31.00000.

San Bernardino, California: 34.392234, -116.291317: : 6/6/2021: Spider Jane Fawke: 6 Jun 2021 :

GBIFID: 1024209618; Occurrence Remarks: Herpetofaunal inventory of the Old Woman Mountains, UCLA Field Biology Course;; Coordinate Uncertainty in Meters: 0.11000.

San Bernardino, California: 34.281041, -116.243675: : 7/5/2021: Spider Jane Fawke: 5 Jul 2021 :

San Bernardino, California: 34.757706, -116.369762: : 5/8/2011: Alyssa Semerdjian: 8 May 2011 :

GBIFID: 3330752199; Occurrence Remarks: Rattlesnake, but what kind?;; Coordinate Uncertainty in Meters: 16646.00000.

GBIFID: 3384160020; Occurrence Remarks: Adult 78F;; Coordinate Uncertainty in Meters: 15.00000.

San Bernardino, California: 34.169254, -116.5664: : 9/19/2021: Sendy Hern├índez Orellana Barrows: 19 Sep 2021 :

San Bernardino, California: 34.195761, -116.596756: : 8/24/2025: Lucas Ramirez: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.185353, -116.31556: : 9/7/2025: kmae91: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 11121.00000.

Occurrence Remarks: Gravid female or very well fed? Photo provided by homeowner and posted with permission.; Coordinate Uncertainty in Meters: 28620.00000.

Occurrence Remarks: Pioneertown; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.192844, -116.218738: : 7/18/2026: Christopher Carlin: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 28874.00000.

San Bernardino, California: 34.33804, -116.245772: : 7/20/2026: stinkmosh: 20 Jul 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

San Bernardino, California: 34.404853, -116.661764: : 6/27/2026: Richard Robbins: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 28818.00000.

San Bernardino, California: 34.310129, -116.304785: : 7/21/2026: stinkmosh: 21 Jul 2026 ; Coordinate Uncertainty in Meters: 28846.00000.