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

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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

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Observer

chiriria

Date

November 20, 2013

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

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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

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

clare_mk

Date

April 14, 2014 01:20 PM PDT

Description

Southern Pacific Rattlesnake on trail, by stream, in shade.

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

October 14, 2014

Place

(Somewhere...)

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Observer

gordonshumway

Date

October 7, 2014

Description

I was riding along a heavy traffic trail at the bottom of the park and saw this juvenile SPR in the middle of the trail. I moved it along off the trail so it wouldn't get stepped on, run over, or picked up by a kid. Beautiful little thing!

Photos / Sounds

What

Southern Pacific Rattlesnake Crotalus oreganus ssp. helleri

Date

September 30, 2014

Place

(Somewhere...)
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.