WHIPPOORWILL
whippoorwill, Caprimulgus vociferus
(noun) American nocturnal goatsucker with grey-and-white plumage
Source: WordNet® 3.1
Etymology
Imitative of its note.
Noun
whippoorwill (plural whippoorwills)
a nocturnal insectivorous bird of North America, Caprimulgus vociferus, a type of nightjar, named after its characteristic call.
Source: Wiktionary
Whip"-poor-will`, n. (Zoöl.)
Definition: An American bird (Antrostomus vociferus) allied to the
nighthawk and goatsucker; -- so called in imitation of the peculiar
notes which it utters in the evening. [Written also whippowil.]
Source: Webster’s Unabridged Dictionary 1913 Edition