What type of snake is this?
Thank you for your question. The snake in your photograph looks like the western yellow-bellied racer, scientific name Coluber constrictor mormon. It is a non-venomous species.
Adult length varies from 20 - 75 inches, although according to the website, CaliforniaHerps.com, in California, this species is usually under 3 feet long.
In California, this species is found north and west of the Sierras and along the coast to the border of Baja, California. It is also found on the island of Santa Cruz. Outside of California, it is found in Oregon, eastern Washington and British Columbia. They are also found in Idaho, Montana, Utah and western Colorado.
This species feeds on lizards, frogs, small rodents, birds, eggs, and large insects.
Here's a link where you can see more photos and get additional information on this species:
I hope this answers your question, and thank you for contacting Ask an Expert.