About Psophia crepitans Linnaeus, 1758
The grey-winged trumpeter (Psophia crepitans Linnaeus, 1758) is a chicken-like bird with a long neck, long legs, and a hump-backed profile. It measures 45 to 52 centimetres (18 to 20 in) in length. Two recorded males weighed 0.82 kg (1.8 lb) and 1.02 kg (2.2 lb), while six recorded females weighed between 0.79 kg (1.7 lb) and 1.06 kg (2.3 lb). The sexes look similar to one another. Their stout, slightly decurved bill is yellowish green, and their legs and feet are greenish olive. Most of their plumage is black. The nominate subspecies has green or violet iridescence on its lower neck. Its inner wings and rump are ashy gray, and the middle of its back ranges from ochre to chestnut. Subspecies P. c. napensis has bronzy or purple iridescence, lighter gray wings and rump, and a more ferruginous back. Subspecies P. c. ochroptera has entirely ochraceous wings, rump, and middle back. The grey-winged trumpeter is native to the northern Amazon Basin. The nominate subspecies ranges from southeastern Colombia east through eastern and southern Venezuela and the Guianas, and south into Brazil to the Amazon River east of the Rio Negro. P. c. ochroptera occurs in northwestern Brazil north of the Amazon and west of the Rio Negro. P. c. napensis ranges from southeastern Colombia south through eastern Ecuador into northeastern Peru, and east into extreme northwestern Brazil north of the Amazon. This species inhabits dense lowland tropical rainforest. Within this habitat type, it favors areas away from human settlements that have an open understory and many fruiting trees. Though it primarily occurs in lowlands, it can sometimes also be found in higher elevation cloudforest.
