Sounds, usually above the range of human hearing, are emitted through the mouth or nose and are reflected back as echoes which enable the bat to avoid obstacles and locate prey. There are two major groups of bats - the Microchiroptera and the Megachiroptera. Most are insectivores, but some are specialized to eat fruit, fish, rodents, birds, reptiles, amphibians and even other bats. The vampire bats of tropical America are in the group and have become specialists at feeding exclusively on the blood of other vertebrates. Fruit Bats live in a variety of habitats from lowlands to mountain forests.
Roosts are ancient tombs and temples, garden trees, rock crevices and caves.
Fruit bats feed primarily on fruit and nectar. This activity is important to plants and to forest survival as the bats pollinate flowers and disperse seeds as they feed. In some areas where agriculture has replaced native forest, fruit bats and flying foxes are thought to damage fruit crops.