Oilbird, or guacharo the type of a peculiar family, related both to the nightjars and to the frog-mouths. The guacharo,
Steatomis caripensis, found in northern South America, and in Trinidad, is nocturnal and feeds chiefly on fruits. It nests on ledges in the interior of caves near the sea, forming a heavy bowl of mud and feathers to hold its white eggs. The fat of the nestlings yields a valuable oil.
