Maryland Bats Fact Sheets

Maryland Bats Fact Sheets

Silver-haired Bat

(Lasionycteris noctivagans)


Silver-haired Bat 


Description:
  • Recognition

    • Blackish-brown fur tipped with silver;
    • Ears and tragus are short, blunt and naked;
    • Face, ears, feet and wing membranes are blackish-brown.

  • Weight: 1/4 - 3/8 oz. (8-11 g)
  • Body length: 3 3/4 - 4 5/8 in. (96-116 mm)
  • Wingspan: 11-13 in. (27-32 cm)
  • Forearm: 1 5/8 - 1 3/4 in. (40-44 mm)

Roosts:
  • Summer Roost: Under loose bark, rock crevices clumps of leaves, woodpecker holes, bird nests, sometimes open sheds, garages or outbuildings. Not known to summer in Maryland.
  • Winter Roost: Migrates. Under loose bark, rock crevices, clumps of leaves, woodpecker holes, bird nests, sometimes open sheds, garages or outbuildings.

Diet:

Moths, true bugs, flies, mosquitoes, termites, and beetles.


Similar Species:

Hoary Bat is much larger with densely furred interfemoral membrane.


Sounds:

Silver-haired Bat Call
Courtesy of Bat Call: Acoustic Call Library and Species Accounts

Silver-haired Bat Spectrograph
Spectrograph of Silver-haired Bat Courtesy of Bat Call: Acoustic Call Library and Species Accounts

Photo by: Dr. J. Scott Altenbach​