Bat Patterns in Winter
Pennsylvania's bats include eleven species. Six species hibernate in caves and underground mines during the winter. The other five species migrate south like birds for the winter.
Pennsylvania's most common bat, the little brown is found statewide.
Length, including tail, is 3.1-3.7 inches; wingspread, 8.6-10.5 inches;
weight ranges from 0.25-0.35 ounces, and is greatest just before hibernation.
Females are slightly larger than males. Color: a rich brown approaching
bronze, usually with a dark spot on the shoulders. The fur is dense, fine,
and glossy; the wings are black and bare.
More information about WPC's Work in Protecting Wildlife Habitat