Merriam's Chipmunk
One of two chipmunk species in the Peninsular Ranges of California (and Baja California), and by far the most common. All the images below were taken near my home in the Cuyamaca Mountains, California, except for the last, which was taken on Middle Peak in the Cuyamaca Mountains.
Lodgepole Chipmunk
The images below were taken in Tulare County in the southern Sierra Nevada Mountains, California.
