The Horned guan is an impressive, unmistakable bird that is named for the unusual red “horn” of bare skin at the tip of its head. Adults sport a horn that averages between 1.6 – 2.4 inches (4 – 6 cm) in height. This large cracid is glossy black above, with a blue-green sheen. The foreneck, breast and upper belly are mostly white, with black flecks. The lower belly and flanks are brown. A striking, white band is near the base of the tail. Horned guans also have a small red dewlap (loose skin hanging under the neck). The legs are red, iris is white and the bill is yellow. Sexes are alike, however it has been reported that the lengths of tarsus, wing, tail and horn are somewhat longer in males. Vocalizations and behavior can be used more accurately for the identification of males and females.