| Mexican Fox Squirrels are large but secretive, and though they spend much of their time on the ground, can be difficult to find at any season. They do not store food or bury nuts. They vocalize—with raspy alarm calls, sometimes followed by a screech—only when safely established in a tree, but they are not as adept at climbing as other tree squirrels. The young frequently fall out of trees, and even adults are clumsy, sometimes slipping when they are scurrying up or down trunks or along branches. When they sense danger, their usual behavior is to freeze. Females usually have one litter of 2-3 young each year; the development of the young has not been documented.
Also known as:
Nayarit Squirrel, Apache Squirrel, Chiricahua Mountain Squirrel, Apache Fox Squirrel, Chiricahua Nayarit Squirrel
Females are slightly larger than males.
684 g males; 707 g females
Allen, J.A., 1889. Notes on a collection of mammals from southern Mexico, with descriptions of new species of the genera Sciurus, Tamias, and Sigmodon, p. 167. Bulletin of the American Museum of Natural History, 2:165-181.
Mammal Species of the World
Mammalian Species, American Society of Mammalogists' species account