Large, long-tailed game bird of humid evergreen forest in highlands and foothills. Mostly seen high in trees, as singles or pairs, where they can move quickly and slip away easily from view. Male is glossy black with bright red throat wattle and red legs (lacks whitish streaking on breast of the much larger Crested Guan). Female is barred brown and blackish overall. In spring, the male gives a piercing upslurred whistle, which it often alternates with an amazing crackling and crashing rattle in a gliding display flight.