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Smithsonian National Museum of Natural History, North American Mammals

  Chiroptera · Vespertilionidae · Myotis septentrionalis

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Myotis septentrionalis

Northern Myotis

Order: Chiroptera
Family: Vespertilionidae

Image of Myotis septentrionalis
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Conservation Status: Least Concern.

Although the Northern Myotis is common and widespread, much remains to be learned about its roosting habits, reproduction, and longevity. This bat is known to hibernate in caves and mines and to roost under tree bark. It is one of the gleaners, plucking insects from the surfaces of leaves, branches, and the ground rather than taking them from the air in flight. Northern Myotis hang from a perch to eat, which lets them take larger insects than they could if they ate on the wing.

Also known as:

Northern Long-eared Bat, Northern Long-eared Myotis

Sexual Dimorphism:

Females are slightly larger than males.


Average: 86 mm
Range: 80-96 mm


Average: 7.4 g
Range: 4.3-10.8 g


Trouessart, E. L. 1897. Catalogus Mammalium tam Viventium quam Fossilium, Nova ed., R. Friedlaender and Sohn, Berlin 1:1–664.


Mammal Species of the World (opens in a new window).

Distribution of Myotis septentrionalis

Image of Myotis septentrionalis
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