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Photo credit: Alan Harper

Myotis californicus

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

High frequency caller (~40 kHz range)


  1/10 - 1/5 oz

(3 - 5 g)

Body Length

2 3/4 - 3 2/3 in

(7 – 9.4 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

California Myotis

California Myotis

The California myotis is one of North America's smallest bats. Its long fur varies from blond to dark brown, and distinguishing characteristics include a keeled calcar and extremely small feet. It ranges as far north as southeast Alaska and as far south as Guatemala, inhabiting deserts, grasslands, montane forests, and humid coastal forests. California myotis have been observed in a variety of roosts, including rock and tree crevices, bridges, caves, mines, buildings, shrubs, and even on the ground. Caves and buildings serve as hibernacula. This species feeds mostly on moths and flies but will also eat beetles, caddisflies, termites, and spiders. Females typically give birth to one pup at a time.

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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