Dark-winged Trumpeter

The dark-winged trumpeter is a chicken-like bird with a long neck and legs and a hump-backed profile. It is 45 to 52 centimetres (18 to 20 in) long. The sexes are alike. Their bill color ranges from dusky brown to bright green and their legs and feet are dusky brown to greenish olive. Adults of the nominate subspecies are mostly velvety blackish with a dark smoky olive-green mantle and wing patch. They have an iridescent purple patch on the lower neck and their outer wing coverts are tipped with iridescent purple. Subspecies P. v. Voice: All trumpeters are highly vocal. The dark-winged trumpeter's song has been described as "a series of low humming notes, given singly at first and then doubled." It also makes "various harsh, sharp or raucous 'tset' notes" as both contact and alarm calls.