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Photo credit: Ian Maton

Myotis ciliolabrum

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

High frequency caller (~40 kHz range)


  1/5 - 1/4 oz

(4.7 - 7 g)


3 1/5 - 3 2/3 in

(8.1 – 9.3 cm)

There are various sources for bat species range maps including IUCN, NatureServe, U.S. Fish and Wildlife Service ECOS, and the National Atlas of the United States

Western Small-footed myotis

Western Small-footed myotis

The western small-footed myotis has light brown to yellowish fur that contrasts starkly with its black face, ears, and wing membranes. This species is found in a variety of habitats including deserts, shrublands, grasslands, and wooded areas. The western small-footed myotis typically hibernates in crevices of caves and mines, but little is known about its winter ecology. Maternity colonies have been documented in rock crevices, barns, and abandoned houses. Females typically give birth to a single pup each season. Diet consists of moths, flies, caddisflies, and a wide range of insects of the order Hemiptera.

Information used to populate this page was obtained from the following sources:
NatureServe Explorer
United States Fish and Wildlife Service Environmental Conservation Online System
Bat Conservation International Bat Profiles
National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at:
Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books.

Conservation Status

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