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Ammospermophilus nelsoni

Nelson's Antelope Squirrel

Order: Rodentia
Family: Sciuridae

Image of Ammospermophilus nelsoni
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Conservation Status: Endangered.

Open, rolling land and gentle slopes with shrubs are the habitat of Nelson's Antelope Squirrel, which lives only in a small region of California in and near the San Joaquin Valley. The squirrels live in relatively small colonies of six to eight individuals. They seldom excavate their own burrows, preferring to use those dug by kangaroo rats. Nelson's Antelope Squirrels are omnivorous, consuming both plants and animals, with insects comprising 90 percent of their food during late spring, summer, and fall.

Also known as:
San Joaquin Antelope Squirrel, Nelson's Spermophile, Antelope Chipmunk

Sexual Dimorphism:
Males are slightly larger than females.

Average: 249 mm males; 238 mm females
Range: 234-267 mm males; 230-256 mm females

Average: 155 g
Range: 142-179 g


Merriam, C.H., 1893.  Descriptions of eight new ground squirrels of the genera Spermophilus and Tamias from California, Texas, and Mexico, p. 129.  Proceedings of the Biological Society of Washington, 8:129-138.


Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Ammospermophilus nelsoni

Image of Ammospermophilus nelsoni
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