However, the rare Sierra Nevada red fox (Vulpes vulpes necator), is native.
Did you know, Vulpes vulpes was introduced to California in the 1880’s? They are now threatening several endangered ground bird species. Different programs have been tried to manage them.
I never realized there was a native and non-native Red Fox in California. The other species of foxes, such as Gray, Island, and Kit fox are native, I believe. I read about introduced species in the great book “National Audubon Society Field Guide to California.”