Chachalacas, Guans and Curassows (Cracidae)

Horned Guan (Oreophasis derbianus) - HBW 2, p. 355

French: Oréophase cornu German: Zapfenguan Spanish: Pavón Cornudo
Other common names: Derby's Guan, Lord Derby's Mountain Pheasant

Taxonomy: Oreophasis Derbianus G. R. Gray, 1844, Guatemala.
This very distinct species has been considered intermediate between the guans and the curassows, sometimes separated in a tribe, or even subfamily, of its own (see page 311). Monotypic.

Distribution: SE Mexico (S Oaxaca and Chiapas) and Guatemala; there is also a probable record from Honduras, which remains unconfirmed.