Maryland Bats Fact Sheets

Maryland Bats Fact Sheets

Hoary Bat

(Lasiurus cinereus)


Hoary Bat, photo by Dr. J. Scott Altenback 


Description:
  • Recognition

    • Largest bat in Maryland.
    • Heavily furred tail membrane.
    • Fur is distinctly banded: black at the base, tan, dark brown, and frosted white at the tip.
    • Fur on the throat and forearm (forehead not forearm) is yellow

  • Weight: 5/8 - 1 oz. (19-28 g)
  • Body length: 4 7/8 - 5 5/8 in. (123-142 mm)
  • Wingspan: 13-16 in. (34-41 cm)
  • Forearm: 2 - 2 1/8 in. (52-54 mm)

Roosts:
  • Summer Roost: Foliage of coniferous trees.
  • Winter Roost: Migrates. Foliage of coniferous trees.

Diet:

Moths, true bugs, mosquitoes, other insects.


Sounds:

Hoary Bat Call  - Courtesy of Bat Call: Acoustic Call Library and Species Accounts

Hoary Bat Spectrograph
spectrograph of Hoary Bat call
 - Courtesy of Bat Call: Acoustic Call Library and Species Accounts

Photo by: Dr. J. Scott Altenbach​