Male umbrellabirds have an umbrellalike crest of feathers that spread over the head.
Males also have a growth of skin, called a wattle, that hangs down from the neck.
In two of the species, the wattle is covered with feathers. Male umbrellabirds display the crest and wattle to attract a mate. Both the crest and the wattle are relatively undeveloped in females. An umbrellabird is about the size of a crow and has black feathers. Umbrellabird Scientific Classification.