As in other bonneted bats, the males possess a gland on the throat that secretes a liquid that stains and mats the surrounding fur.

[2] Big bonneted bats are known from two distinct parts of South America.

It is known to inhabit areas of low vegetation interspersed with patches of tropical forest, at elevations of up to 1,100 m (3,600 ft).

[2] Big bonneted bats are insectivorous, and roost in hollow trees and artificial structures such as houses.

They have been reported to emit audible "piercing shrieks" when they are foraging for food.