There are more than 1,300 species of bats in the world, making them the second most common group of mammals after rodents. Bats do not have very good vision so to navigate dark caves and hunt after dark, they rely on echolocation by emitting a high-pitched sound that travels until it hits an object and bounces back to them. The echo tells them an object’s size and how far away it is. Arizona bats often hibernate and breed in caves and many live in giant colonies with millions of other bats. In the Summer they will happily roost in the crevice of a building, the attic or a box specially constructed for bats. As their main food is usually insects, bats are vital members of their ecosystems. During the Summer months, church visitors enjoy observing the bats at night as they visit our hummingbird feeder.