Egyptian fruit bat their days roosting in trees or caves, often with large groups of other bats, sometimes numbering in the thousands. They emerge from the roost to forage for food in the late evening, and return just before dawn. They hang upside down, with their wings folded closely around their bodies. Egyptian fruit bats, along with other species in the genus "Rousettus", are the only megachiropterid bats to use echolocation, which they accomplish by emitting a series of sharp clicks with their tongues. The clicks are normally slow and constant, but these clicks speed up dramatically when the bats approach an object.
Argentine brown bat Their diet will change slightly depending of the season of the year, whether it is the rainy or dry season. like other bats the Argentina brown bat hunts for its food using echolocation near streams and small bodies of water. their diet consist of various types of moths, some beetles, butterflies. One threat to the Argentine brown bat is insecticides that are encountered through ingestion of sprayed insects and plants which the insects eat. The Argentine brown bat is known to be able to reproduce year round, most tropical species of bats do not hibernate or use torpor in off