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
Virginia big-eared bat make sounds that then echo off of objects around them, enabling them to find their prey while flying in the dark. Typically they prey on insects like moths, beetles, termites, mosquitoes and flies. Without echolocation, the bats would not be able to locate food. When analyzed, 97% of Virginia big-eared bat fecal pellets showed that the bat had consumed and digested Lepidoptera. Lepidoptera is a classification of insects that contains butterflies and moths. In Kentucky a similar study was done, examining the fecal pellets and stomach contents of the bats in and around the caves. The processed food showed that