California Striped Racer or California Whipsnake, Coluber lateralis lateralisNative from about Shasta Lake, through both the coast ranges and Sierras down into Baja, skipping the great valley and the deserts.
As with most snakes they'll eat any small animals they come upon.
Active during the days in spring through fall. Hibernates during winter.
Coiled up on a warm rock.
This snake more so than many others, is a tree climber. It was perfectly happy to climb up into this small tree and watch the parking lot.