Southern helmeted curassow (Crax unicornis)—Albert E. Gilbert
Any of numerous tropical American bird species (family Cracidae); strictly defined, one of 7–12 species in which the male is glossy black and has a curled crest of feathers and a brightly coloured bill ornament. The smaller female is brownish and unornamented. Curassows have delicious flesh and are hunted as game. Large species (measuring up to nearly 40 in. [100 cm] long) include the great curassow (Crax rubra), found from Mexico to Ecuador; the helmeted curassow (Pauxi pauxi), of the Venezuelan and Colombian mountains; and the critically endangered razor-billed curassow (C. mitu), of the Amazon.