Musical Birds

Recently I was reading the newest issue of National Geographic and they had an interesting article about a species of bird from central and south America. They are pretty cool. They have especially designed feathers with hollow chambers that when struck together create chime like
tones. The have several different feathers of varied thickness and lengths that can create many different tones. They use all of this just to mate.

Anyway, here is a quick paint I did of one of these birds.