Young still suckling, they start catching insects Females leave the nursery so they can find males. FOOD Bats eat fish, frogs, fruit, and nectar. They use their high pitched sounds to scare their enemy away. Insect eating bats are nocturnal which means bats catch their food at night. The way they do find their food is echolocation.
Echolocation has a different name, it is sonar.
Bats can detect things as small as a human hair. Bats are the best bug control. Bats have only one baby a year. Bats are the only flying mammal. The smallest bat weighs less than five cents.