The Steatornithidae family includes only one species, the oilbird (Steatornis caripensis). It is found in South America and in Trinidad.

The oilbird is a large, slim bird with a hooked bill surrounded by whiskers.

Unlike other birds in the Caprimulgiformes order, the oilbird eats plants.

It is nocturnal and it lives in forested areas. It spends the day in caves and, like bats, it uses echolocation to find its way around in the dark!