Silver-haired Bat

Lasionycteris noctivagans

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

Low frequency caller (~30 kHz range)


3 5/8 – 4 1/2 in (9.2 - 11.5 cm)


1/4 - 3/8 oz

(8 - 11g)


The silver-haired bat has dark, blackish fur, with tips of silver guard hairs and a short and broad snout. This species is found most often in coniferous or mixed coniferous and deciduous forests, with a preference for Old Growth areas. Roosts are almost exclusively in tree cavities, hollows, or under loose bark. Hibernation sites include wood piles and cliff faces, with species occasionally hibernating in the entrances of caves. Primary prey for this bat includes small, soft-bodied insects, such as flies, midges, leafhoppers, moths, mosquitos, beetles, caddisflies, and sometimes spiders. Silver-haired females are known to produce twin pups (baby bats).

Conservation Status

U.S. FWS - not listed
Image by Thowo Wolkowski


The silver-haired bat covers most of the United States and parts of Canada

View Range Map

*Numerous sources for species range maps exist and information may vary between sources. 




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.

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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

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