The Ozark big-eared bat is a threatened species found only in ... Mating among these bats is initiated with ritualized calls and affectionate head nuzzling. The female stores the male’s sperm ...

The big brown bat is the Adirondack’s largest bat; only the hoary bat is larger. The long, lustrous fur is brown. The ears, wing and tail membranes are black. Total length is 105-123 mm (4.1-4.8 in).