About Psophia leucoptera Spix, 1825
The pale-winged trumpeter, scientifically named Psophia leucoptera Spix, 1825, is a chicken-like bird with a long neck and legs, and a hump-backed profile. It measures 45 to 52 centimetres (18 to 20 inches) in length. Males weigh 1.28 to 1.44 kg (2.8 to 3.2 lb), while females weigh 1.18 to 1.32 kg (2.6 to 2.9 lb). The two sexes look similar to one another. Their stout, slightly curved bill is grayish with a yellow base, and their legs and feet are pale grayish. Their plumage is almost entirely black, with a white hindwing and purple, green, and bronze iridescence on the outer wing coverts. This species is found in the upper Amazon Basin, occurring in eastern Peru, northern and central Bolivia, and central-western Brazil south of the Amazon and west of the Rio Madeira. One recorded sighting in extreme southeastern Colombia has not been accepted by the South American Classification Committee of the American Ornithological Society. The pale-winged trumpeter lives in dense lowland tropical rainforest, and within this habitat type it favors areas that are away from human settlements. It occurs at elevations up to 750 m (2,500 ft).
