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Myotis lucifugus

Common Name: Little Brown Bat
Myotis lucifugus
Myotis lucifugus

Scientific Classification

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Myotis
Species: lucifugus

Conservation Status

Identifying Features

The Little brown bat is between 2.5 - 4" long and has a 9" wingspan. They are a glossy brown color with a pale white belly. Their flight appears arratic and they release audible squeaks to communicate. You can distinguish them from the big brown bat, that flies in straight at quick speeds.

Habitat & Range

These bats are commonly found throughout much of the lower 48 United States except large areas of Nebraska, Kansas, Oklahoma, Texas, and New Mexico. They are also found in much of Canada and Alaska. Little brown bats live in a variety of habitats and often live in woodland surrounding bodies of water.


During the summer and early fall, these bats will roost for the night under tree bark, in human-made structures, or even under rocks and wood!

Life Cycle

Little brown bats hibernate through the winter in caves and similar rock formations. Female bats fom colonies where they will raise their young. Mating season is in the fall before hibernation, and female bats will store the sperm over winter, delaying fertilization, and giving birth in May or June.

Featured image by Abcd.


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