About Oreophasis derbianus G.R.Gray, 1844
The horned guan (Oreophasis derbianus G.R.Gray, 1844) measures 75 to 85 cm (30 to 33 in) in length. Its most recognizable trait is the tall, red, fleshy "horn" that sits on its forehead. It has a small head, long strong legs, and a long broad tail. Males and females have similar plumage, but males have a taller horn, as well as longer wings, tail, and legs than females. Adult horned guans have glossy black heads, necks, and upperparts with a bluish sheen. Their tail is black with a wide white band close to its base. The throat, breast, and upper belly are whitish with black flecks, while the lower belly and flanks are brown. Adults also have a small red dewlap, a white iris, a yellow bill, and red legs and feet. Juvenile horned guans look similar to adults, but their coloration is duller and they have a smaller horn. The horned guan occurs in the southern Mexican state of Chiapas, and possibly in Oaxaca, as well as in southern Guatemala. Reports of its presence in Honduras have not been confirmed. Its distribution is not continuous, and is instead highly localized. It lives in humid subtropical montane evergreen forest, cloudforest, and pine-oak forest. Its habitat typically has abundant undergrowth made up of tree ferns, epiphytes, mosses, and vines. Most of the species' range sits between 2,300 and 3,100 m (7,500 and 10,200 ft) in elevation, but local populations can be found as low as 1,200 m (3,900 ft) and as high as 3,350 m (11,000 ft).
