Ammospermophilus harrisii (Harris' antelope squirrel, Harris's Antelope Squirrel)

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Harris' Antelope Squirrel habitats

Habitat and Ecology

This species occupies a variety of desert habitats, including those with cacti and desert shrubs.

  • Terrestrial

The Harris antelope squirrel inhabits arid, sparsely vegetated plains and lower mountain slopes. It prefers rocky hills or rocky soils. (Nowak 1991)

Terrestrial Biomes: desert or dune

Comments: Low dry, sparsely vegetated desert; open areas in plains, valleys, canyons, and river bottoms. Saltbush-creosote bush- bursage, usually in areas with rocky soil or rocky slopes, but in sandy areas in some regions (see Best et al. 1990 for further details). In underground burrow when inactive. Burrow openings near or under bushes, in cactus thickets, or among rocks. May climb onto vegetation (OPUNTIA). Young are born in underground burrows.

Harris' Antelope Squirrel size

Length: 25 cm

Weight: 150 grams

Sexual Dimorphism: None

Average: 238 mm
Range: 216-267 mm

Average: 122 g

Harris' Antelope Squirrel distributions

Occurs below 1,350 meters elevation in the southwestern United States (Arizona and New Mexico) and adjoining portion of Sonora, Mexico. In the US, it occurs primarily in southern and western Arizona, where its range does not extend beyond the Colorado River. Found in a small area of southwestern New Mexico, specifically in the Peloncillo Mountains and near Redrock.

Harris antelope squirrels are found below 1,350m elevation in southwestern United States and northwestern Mexico. (Best et al. 1990)

occurs (regularly, as a native taxon) in multiple nations

Harris' Antelope Squirrel Conservation Status

Red List Category
Least Concern

Red List Criteria


Year Assessed

Timm, R., lvarez-Castaeda, S.T., Castro-Arellano, I. & Lacher, T.

McKnight, M. (Global Mammal Assessment Team), Amori, G., Koprowski, J. & Roth, L. (Small Nonvolant Mammal Red List Authority)


This species is listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.

  • 1996
    Lower Risk/least concern (LR/lc)

In some parts of its range, the Harris antelope squirrel is losing habitat to agriculture and other human developments. It is considered threatened in the state of California. (Nowak 1991)

IUCN Red List of Threatened Species: least concern

United States

Rounded National Status Rank: N5 - Secure

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