The large size, uniform coloration, and large face with short/round ears makes the big brown bat easy to identify. While overall brown in appearance, the big brown bat’s belly tends to be lighter in color and its wings tend to be black in color. Big brown bats have been found to live up to 19 years in the wild.
Beetles, ants, flies, mosquitoes, mayflies, stoneflies, other insects.
Big brown bats have dramatically declined in Maryland due to white-nose syndrome. Currently, there is a slight population rebound occurring in Maryland hibernacula (winter roosts). Big brown bats are listed as species of greatest conservation need in Maryland.
Big Brown Bat CallCourtesy of Bat Call: Acoustic Call Library and Species Accounts
Big Brown Bat Spectrograph
580 Taylor Ave., Annapolis MD 21401
Call toll-free in *Maryland* at 1-877-620-8DNR (8367)
Out of State: 410-260-8DNR (8367)