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

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

agossard

Date

February 26, 2015 10:25 AM PST

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

sea-kangaroo

Date

May 24, 2014 03:09 PM PDT

Description

Just a little guy.

Tags

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

kclarksdnhmorg

Date

April 1, 2009

Description

2:15 PM.

Photos / Sounds

What

Southern Pacific Rattlesnake (Crotalus oreganus helleri) Crotalus oreganus ssp. helleri

Observer

upandadam

Date

February 11, 2015 12:44 PM PST

Description

Why did the rattlesnake cross the road? To get away from the weird lizard that was chasing it. This guy was crossing the road on the way up to the Cabrillo lighthouse.

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

andrew_louros

Date

October 11, 2014 03:50 PM PDT

Description

I found this large rattler in the middle of the road that led through the park, it was relocated by park staff to a less people-dense area shortly afterwards(hence the trash bin). Specimen was between roughly 3-4.5 ft and appeared to be female due to tail size. Rattle had a decent collection of segments.

Photos / Sounds

1400505 10152055368903554 769290155 o

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

chiriria

Date

November 20, 2013

Place

(Somewhere...)

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

keithmelliott

Date

January 26, 2015 10:00 AM PST

Place

(Somewhere...)

Description

This is the same animal I posted for 2015-01-25, relocated from a ranch building.

Photos / Sounds

Square

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

keithmelliott

Date

January 25, 2015

Place

(Somewhere...)

Description

Caught in a building on a horse ranch; I was asked to relocate it. In the past, this ranch would kill any snakes they caught.

Less than 25cm long, with two buttons on rattle.

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

fundad

Date

July 15, 2010

Photos / Sounds

397798 10151661529194612 222301946 n

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

twake63

Date

May 5, 2013

Description

A beautiful melanistic Crotalus oreganus helleri, who had just envenomated (next image)

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

asemerdj

Date

November 17, 2014 01:12 PM PST

Photos / Sounds

Square

What

Southern Pacific rattlesnake Crotalus oreganus ssp. helleri

Observer

dgreenberger

Date

November 8, 2014 07:44 PM PST
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.