Allen’s Big-eared Bats are insectivores, meaning they eat insects. They leave their roost sites after sunset to head towards a water source to find and catch insects. These bats are agile flyers and can maneuver very quickly to snatch bugs out of the air as well as gleaning them off plants. They will eat many different types of insects, but moths make up most of their diet. Like other bats, they use echolocation to aid in hunting and navigating their landscapes. Some of their echolocation calls can be heard as a series of clicks to the unaided ear! Female bats form maternity colonies in the summer. This is where around 30 female bats will all choose one location to give birth and raise their young together. In Nevada, these maternity colonies are either found in mines or in snags. During this time, the males live totally separately from the females. Females give live birth to one single young, called a “pup.” Like all mammals they nurse on their mother’s breast milk until they are old enough to take flight and catch their own food.