Megabat long, thus smaller than some microbats, for example, the Mauritian tomb bat. The largest attain a wingspan of , and weigh as much as . Most fruit bats have large eyes, allowing them to orient themselves visually in twilight and inside caves and forests. Their sense of smell is excellent. In contrast to the microbats, the fruit bats do not use echolocation (with one exception, the Egyptian fruit bat "Rousettus egyptiacus", which uses high-pitched tongue clicks to navigate in caves). Megabats make up the only family (Pteropodidae) in order Chiroptera that is not capable of laryngeal echolocation. Echolocation and flight
Lesser sac-winged bat the tree canopy. The lesser white-lined bat feeds primarily on aerial insects in the order Hymenoptera. This includes flying ants and formicids. The bats forage in areas under tree canopies and use echolocation to hunt the flying insects. The bats don't change their calling frequency or their mouth size when using echolocation while hunting. When roosting, the bats usually form small groups anywhere from 2 to a 9. Additionally, the bats are thought to be monogamous which is rare for most mammals. Females typically only produce one or two young per year. The young can't fly for about the first