The Eastern Whip-poor-will, (Antrostomus vociferus), is a medium-sized (22–27 cm) nightjar bird from North and Central America. The whip-poor-will is commonly heard within its range, but less often seen because of its superior camouflage. It is named onomatopoeically after its song. Description These medium-sized nightjars measure in length, span across the wings and weigh . Among standard measurements, the wing chord is , the tail is , the bill is and the tarsus is . Adults have mottled plumage: the upperparts are grey, black and brown; the lower parts are grey and black....