Photo Credit: Ian Maton

Western small-footed myotis

Myotis ciliolabrum

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

High frequency caller (~40 kHz range)


3 1/5 - 3 2/3 in

(8.1 – 9.3 cm)


  1/5 - 1/4 oz (4.7 - 7 g)

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.

Conservation Status

Canada Species at Risk

Photo Credit: Ian Maton




NABat utilizes monitoring data provided by a broad network of partners to support regional and range-wide inferences about changes in the distributions and abundances of bat populations facing current and emerging threats.

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: http://purl.stanford.edu/pz329xp4277.

Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books.