How To Identify Different Types Of Ground Squirrels In California?

Size and Coat Color

When identifying ground squirrels in California, size and coat color are key characteristics. The California ground squirrel (Otospermophilus beecheyi) is the largest, measuring up to 12 inches in length and weighing up to 1 pound. It has a dark brown to black coat with lighter-colored fur on the underside. The rock ground squirrel (Spermophilus variegatus) is smaller, reaching up to 9 inches in length and weighing up to 6 ounces. Its coat is light brown to gray, with a distinctive white stripe running along the spine. The spotted ground squirrel (Spermophilus spilosoma) is also small, reaching up to 8 inches in length and weighing up to 4 ounces. Its coat is dark brown with white spots on the back and sides.

Tail Length and Behavior

Tail length and behavior can also be used to identify ground squirrels in California. The California ground squirrel has a short, bushy tail that is about 1 inch long. It is known to be highly social and often seen in large groups. The rock ground squirrel has a longer, more slender tail that is about 2 inches long. It is typically solitary and has a more nomadic lifestyle. The spotted ground squirrel has a long, thin tail that is about 3 inches long. It is also solitary and has a more territorial behavior.

Habitat and Distribution

Ground squirrels in California can be found in a variety of habitats, from grasslands to woodlands. The California ground squirrel is found throughout the state, including urban areas. The rock ground squirrel is found in the central and southern regions of the state, typically in rocky outcroppings and canyons. The spotted ground squirrel is found in the southern region of the state, typically in dry, open areas with scrubby vegetation.