The Hoatzin, also known as the Hoactzin, Stinkbird, or Canje "Pheasant", is an unusual species of tropical bird found in swamps, riverine forest and mangrove of the Amazon and the Orinoco delta in South America. It is brown in colour, with paler underparts and has an unfeathered blue face with maroon eyes, and its head is topped by a spiky, rufous crest. The Hoatzin is herbivorous, it eats leaves and fruit, and has an unusual digestive system with an enlarged crop which functions as a rumen. It is a roughly pheasant-sized bird some 65 cm, with a long neck and small head. It also produces a horrible smell to scare away potential predators. The chicks are unusual in that two of their wing digits possess claws. It is the only member of the genus Opisthocomus, which in turn is the only extant genus in the family Opisthocomidae. The taxonomic position of this family has been greatly debated, and is still far from clear.
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