a widely distributed natural family of nocturnally active birds including the
whip-poor-will (
Caprimulgus vociferus), the
chuck-will's-widow (
Caprimulgus carolinensis), and the
common nighthawk (
Chordeiles minor); -- called popularly the
goatsuckers or
nightjars. The nighthawks are sometimes active during the day. [
PJC]
"The family . . . is alternately known as the nightjars (derived from the "churring" sounds of several species -- "jarring" the night air), or goatsuckers, a nonsense name that should be discontinued as it has its origin in the preposterous myth that the birds sucked the milk of nanny goats until they were dry."