Fantastic bird of the Amazonian region and adjacent Andean slopes. It looks like a huge crow with a bushy crest, a thick braid hanging from its throat, and pale eyes. Male is larger than female, with a longer (feathered) wattle and a white patch at the front of his crest. Flight is undulating and woodpecker-like. Inhabits tall rainforest, often along rivers, and males gather at display sites where they extend their wattles and give low pitched moos.