Natural history and ecology: These bats feed on insects. They start foraging daily before sunset and remain active for about five or seven hours, they fly low in height, and are dispersed in groups, following migratory routes, feeding mainly in moths and beetles, that are caught in flight with help of the echolocation. It has been estimated that one colony of 600,000 individuals of this species, can consime from 1900 to 3,000 kg of insects in one night. Therefore giving a direct benefit to humans by controlling agriculture plagues. They live in deep caves that are hot and humid, they can also take roost from mines and tunnels, which are often shared with other species, and occasionally they also roost in human buildings. The can form large colonies of about 800,000 individuals, these bats mate in winter, and they bring birth their cubs about june and july, when the rainy season starts. Females only have one cub for year.

Distribution: This species can be found all over northern Mexico, from Sonora to Tamaulipas, and south through the american continent until Mato Grosso in Brasil. They are also present in Trinidad and the big Antillas. It inhabits tropical rain forests, xeric landscapes and can tolerate perturbation from men. It is generally present in humid areas of the tropical rain forest, cloud forest and tropical dry forest, from sea level up to 3000 meters above sea level.