Saturday, February 02, 2008

Hummingbirds Chirp With Tail Feathers When Diving


Hummingbirds Chirp With Tail Feathers When Diving: "Loud chirps during male hummingbirds' aerial displays come from the birds' tails, not their throats, a new study says.

Anna's hummingbirds make rapid, swooping dives during courtship rituals that are punctuated by high-frequency squeaks."





-

No comments: