Classification
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All Names

  • English
    • Southern Pacific Rattlesnake
  • Scientific Names
    • Crotalus oreganus helleri
    • Crotalus helleri
    • Crotalus viridis helleri

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Recent observations

Photos / Sounds

No photos or sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

nhmordenana

Date

August 27, 2015 08:59 PM PDT

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

gregpauly

Date

August 27, 2015 10:23 AM PDT

Description

Observed crossing Mt. Baldy Road by Charles Hood. Photo uploaded by Greg Pauly.

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

August 25, 2015

Place

(Somewhere...)

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

August 24, 2015

Place

(Somewhere...)

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

mickeylong

Date

August 25, 2015

Description

Subadult crossing paved road at 8:25 p.m.; warm, humid night.
Poor cell phone photos.

Photos / Sounds

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What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

newt8686

Date

August 22, 2015

Description

We flipped over an over turned trash can and found this little guy.

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

August 19, 2015

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

August 15, 2015

Place

(Somewhere...)

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

kclarksdnhmorg

Date

August 3, 2015

Description

2,882 ft. elevation.

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

dpalmeri

Date

April 21, 2009

Place

(Somewhere...)

Description

Observed basking in dry rocky creek at 16:54. Approximately 61 cm SVL.

Photos / Sounds

19607411388 baa1ee5392 s

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

travisfarwell

Date

July 18, 2015 03:00 AM PDT

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

randem

Date

July 31, 2015 11:17 PM PDT

Description

Very wide. Possibly gravid female. Exactly 3 ft in length. Found DOR @ 10:40 PM. 7/31/15 Air temp is 75 F.

View all observations

Description from Wikipedia

Crotalus oreganus helleri is a venomous pitviper subspecies found in southwestern California and south into Baja California, Mexico.

No range data available.