Southern Pacific Rattlesnake - Crotalus oreganus helleri - Found at 8:30pm on 7/6/17 in a flower planter by a 4 year old child. Feeding the snake before the ...
Southern Pacific Rattlesnakes that are almost entirely dark in color such as these occur around Southern California but they seem to be prevalent around Idyllwyld on Mount San Jacinto. Adult hiding in pine needles, San Jacinto Mountains, Riverside County, Douglas Brown.
Speckled Rattlesnake (Crotalus pyrrhus). These snakes are smaller than the Southern Pacific or Red Diamond, reaching about two to three feet in length. They are highly variable in color and pattern.

Southern Pacific rattlesnakes ( Crotalus viridis helleri ) remain lighter in shades of colors such as tan and yellow as well as having dark brown patches on the body and a wide tail.
The Southern Pacific rattlesnake is sometimes also called the western rattlesnake or the black diamond rattlesnake (due to the diamond patterns running down the length of this snake. This snake is often confused with the western diamondback rattlesnake because of the...

This particular example perfectly highlights why Feeding Temperature For Southern Pacific Rattlesnakes is so captivating.
Southern pacific rattlesnake. Southern Pacific rattlesnake: Also called a western rattlesnake, this is the most common species in San Diego and may be found near housing developments, parks, and even the beach.