They go south in winter to find food and they come back in the summer. To hunt for insects, bats use their ears. When the bat is flying, it makes a high-pitched noise, which bounces and echoes off everything it hits, including trees and people. Bats know which objects are food, and get it by using their mouths and wings to catch them. This way of finding their food is called echolocation.
Bats sleep upside-down and they usually sleep in big groups, which are called colonies.
They like to sleep in buildings which have high ceilings, like churches or barns. Some people who care about our environment say that bats tell us we have a healthy, natural world, and if there are no bats, this warns us that the environment is in trouble. There are four species in this little-known family of insectivorous bats. They can be found from the north of Mexico to the West Indies and in central Brazil. Their ears stand out and are like funnels and this is how these bats get their name.