Oilbird

The oilbird, locally known as the guacharo, is a bird species found in the northern areas of South America, including the Caribbean island of Trinidad. It is the only living species in its genus, family, and order, and it nests in colonies in caves as a nocturnal feeder on the fruit of the oil palm and tropical laurels, making it the only nocturnal, flying, fruit-eating bird in the world. It navigates by echolocation in the same way as bats, one of the few birds known to do so, producing a high-pitched clicking sound around 2 kilohertz that is audible to humans.