Common Names:Pacific Rattlesnake, Western Rattlesnake
Habitat:Rocky Hillsides, talus slopes, most rocky areas, mountain pine areas. This Subspecies occurs from Santa Barbara County, CA, north to Canada, throughout the Northwest from Sea Level to 11,000 feet.
Description: Coloring tends to match the terrain ranging from brown, gray, reddish brown. Back is marked with brown or black blotches, edged dark and bordered by white. Blotches cover about 2/3 of the snakes back, the last 1/3 consisting of evenly spaced light and dark rings all the way to the tail. Head may have one light stripe extending from the eye to the corner of the mouth.
Comments: This is a Subspecies of Western Rattlesnake (Crotalus oreganus). The other two subspecies in California consist of the Southern Pacific Rattlesnake and the Great Basin Rattlesnake.

Source: www.californiaherps.com