Habitat: Little brown bat is found statewide. They can be found roosting in buildings, trees, and wood piles.

Appearance: The little brown bat's fur is a brown/bronze that is dense, fine and glossy while there is a dark spot on their shoulders. Their wings are black.

Size: Females are typically slightly bigger than the males. The length ranges from 3.1 to 3.7 inches and the wide span is 8.6 to 10.5 inches. Their weight can range from 0.25 to 0.35 ounces. 

Activity: The little brown bat will come out of their roost at dusk and go straight towards a body of water to skim across the surface for a drink and hunt for insects. They take several feeding trips and can typically catch about 1,200 insects an hour. They typically eat moths, bugs, beetle, flies and mosquitoes. They catch their food with their wing or tail membrane and transfer it to their mouth. In October and November, they begin to hibernate and move into tunnels, mine shafts, and caves. In spring around April and May they emerge from hibernation. They return to the same hibernation and summer roosting places every year. Males are solitary while the females gather in nursery colonies of 10 to 1,000 bats. 

Life Cycle: Females usually have one baby every June or early July. The babies are fully grown and ready to leave the colony at four weeks. They have a lifespan of up to thirty years.

PA Game Commission . (n.d.). Bats Wildlife Note. Pennsylvania Game Commission. https://www.pgc.pa.gov/Education/WildlifeNotesIndex/Pages/Bats.aspx.