Megabat evolved early in the lineage of chiropterans. Although echolocation was later lost in family Pteropodidae, bats in the genus "Rousettus" are capable of primitive echolocation through clicking their tongues, and some species have been shown to create clicks similar to those of echolocating bats using their wings. Both echolocation and flight are energetically expensive processes. The nature of the flight and echolocation mechanism of bats allows for creation of echolocation pulses with minimal energy use. Energetic coupling of these two processes is thought to have allowed for both energetically expensive processes to evolve in bats. The loss of echolocation may
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