The Great Potoo (Nyctibius grandis) ranges from Guatemala to east Peru, central Bolivia and southeast Brazil. It lives in canopy of dense lowland wet forest. Adults are 51 cm (20 inches) in height and 600 g in weight.
Overall pale gray, shading to white on belly. Above and below lightly and irregularly barred and vermiculated with black and buffy-brown. Scapulars spotted with black. With an irregular band of black spots across breast. Wings and tail barred with black and buff, mottled with cinnamon and grayish. Bill blackish and feet pale greenish. This bird eats large flying insects, like beetles and moths, and small bats.