Whip-poor-will
Overview
 
The Eastern Whip-poor-will, Caprimulgus vociferus, is a medium-sized (22–27 cm) nightjar
Nightjar
Nightjars are medium-sized nocturnal or crepuscular birds with long wings, short legs and very short bills. They are sometimes referred to as goatsuckers from the mistaken belief that they suck milk from goats . Some New World species are named as nighthawks...

 from North
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 and Central America
Central America
Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

. The whip-poor-will is commonly heard within its range, but less often seen because of its superior camouflage
Camouflage
Camouflage is a method of concealment that allows an otherwise visible animal, military vehicle, or other object to remain unnoticed, by blending with its environment. Examples include a leopard's spotted coat, the battledress of a modern soldier and a leaf-mimic butterfly...

. It is named onomatopoeically after its song.

This bird is sometimes confused with the related Chuck-will's-widow
Chuck-will's-widow
The Chuck-will's-widow, Caprimulgus carolinensis is a nocturnal bird of the nightjar family Caprimulgidae. It is found in the southeastern United States near swamps, rocky uplands, and pine woods...

 (Caprimulgus carolinensis) which has a similar but lower-pitched and slower call.

Adults have mottled plumage: the upperparts are grey, black and brown; the lower parts are grey and black.
 
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