Photo Credit: Christopher Fill

Northern Long-eared Myotis

Myotis septentrionalis 

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

High frequency caller (~40 kHz range)


3 1/8 in

(7.8 cm)



1/4 - 3/8 oz

(6 - 9 g)


The northern long-eared myotis has light brown fur with paler gray fur on its underside. The face, ears, and membranes are darker. This species' ears are long compared to other bats in the Myotis genus and end in rounded tips. In the summer, the northern long-eared myotis can be found in its more northern range, preferring dense forest stands such as boreal forest. Roosts are mainly among trees and buildings, with maternity roosts often behind exfoliating bark or within tree cavities. Hibernation roosts include small caves or crevices, such as underground mines. Typically, this species is a solitary rooster or will roost in small groups (about 20-60 females to a maternity roost). Moths are the primary prey for this species. The fungal pathogen, white-nose syndrome, has caused population declines of up to 99% at hibernation sites.

Conservation Status

Mexico - not listed
Image by Federico Bottos


The northern long-eared myotis occurs across eastern North America, from west to southern Canada and into Newfoundland, into the east and central United States, as northwest as the Dakotas and south as northern Florida


Photo Credit: John Lamb




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.