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threatened and/or endangered

Hoary Bat Lasiurus cinereus


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Hoary Bat in flight with insect
credit: M. Siders

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Family: Vespertilionidae, Vespertilionid Bats view all from this family

Description Large, dark bat with grizzled fur that is frosted with white and marked with a yellow collar. The frosting gives this bat a hoary appearance. The fur extends across the tail membrane, and the ears are thickened, short, and rounded. The tragus is short and broad. Forearm 46-55mm.

Dimensions 99-140mm, 40-64mm, 20-35g

Warning Bats are susceptible to rabies, a serious viral disease that results in death if untreated. Rabid bats rarely attack humans or other animals, but bats found lying on the ground may be rabid. Never touch or pick up any bat. Stay away from any animal that seems to be acting strangely and report it to animal-control officers. If you are bitten by a possibly rabid animal, you must immediately consult a doctor for a series of injections; there is no cure once symptoms emerge.

Habitat Canyons & caves, Forests & woodlands, Alpine & subalpine habitats

Range Plains, Great Lakes, New England, Mid-Atlantic, Rocky Mountains, Southeast, Southwest, Florida, Texas, California, Northwest, Eastern Canada, Western Canada, Alaska