oilbird

noun

oil·​bird ˈȯi(-ə)l-ˌbərd 

: a nocturnal bird (Steatornis caripensis) of northern South America and Trinidad that is related to the nightjars, feeds chiefly on the fatty fruits of various palms, and has fatty young from which an oil used especially in cooking is extracted

called also guacharo

Word History

First Known Use

1859, in the meaning defined above