Note:  Do not rely on this information. It is very old.

Cockofthe Rock

Cock of the Rock, any bird of the South American passerine genus Rupicola, distinguished by an elevated crest extending from the neck forward so as to cover the nostrils. In the best known species (R. crocea), about the size of a pigeon, the plumage is of a brilliant orange-yellow in the adult male; that of females and immature males is dull yellowish-green, and in these birds the crest is smaller.