Bats of Connecticut

genera
Bats that occupy buildings
  • little brown bat (Myotis lucifugus) — common and widespread in the state This and the big brown bat are the two most common bat species in the state
  • big brown bat (Eptesicus fuscus) — winters in the state, often hibernating in buildings, occasionally caves; a bat seen in winter is probably this species; in summer it often roosts in attics; it breeds in the state.
Bats that roost in trees in summer
Bats that hibernate in caves and tunnels