Common Name: Hoary Bat
Scientific Name: Aeorestes cinereus
Diet: Insectivorous—insects caught in flight.
This, the largest and most strikingly colored bat in Pennsylvania, migrates when the weather becomes too cold to forage on insects. It is believed that its migration pattern follows that of insectivorous birds. With its 15-inch wingspan, its flight has been described as erratic and clumsy. However, most sources say that it is rarely observed because of its habit of emerging well after dark.