| Forest trees provide food and shelter for Allen's Squirrels. Oaks are particularly desirable. The squirrels eat acorns and oak flowers and buds, and nest in cavities or on branches. Cavity nests can be as low as 1.5 m from the ground. Branch nests are higher, 7 to 13 m above the ground, and built of leaves and sticks. The squirrels use other kinds of forest, too, and are willing to extend their diets to include corn, peanuts, tomatoes, peaches, grapes, and other fruit. They also eat larvae and adult insects. They are most active from sunrise until about 10 a.m. and again in the late afternoon, making soft "chirring" calls as they forage.
Allen's Squirrels have soft, dense fur and full tails. Females are about the same size as males, but tend to be heavier. Predators include owls, hawks, rattlesnakes, and carnivores (Ringtails, Coyotes, Gray Foxes, and Bobcats), but the squirrels' greatest threat is from habitat loss as forests are logged or cleared for farming.
Total Length: 440-481 mm; Walker: Head and Body: 200-315 mm; Tail: 200-230 mm; Walker: Tail: 200-310 mm
290-485 g males; 345-510 g females
Nelson, 1898. Proceedings of the Biological Society of Washington, 12:147.
Mammal Species of the World (opens in a new window).
Mammalian Species, American Society of Mammalogists' species account * (opens in a new window).
* PDF reader available here (opens in a new window).