....it's may the feathers you hear, not the vocalization! http://news.bbc.co.uk/2/hi/science/nature/7216230.stm Excerpt: Hummingbird 'uses tail to chirp' Hummingbird in flight Hummingbird chirp A species of hummingbird makes a chirping noise with its tail feathers, not its throat, a study using high-speed video has suggested. "Hope is the thing with feathers That perches in the soul And sings the tune without the words And never stops at all." --Emily Dickenson Mercy for birds, wild birds http://www.thepetitionsite.com/1/no-vulture-culling The Parakeet Perch - Budgie community http://groups.yahoo.com/group/TheParakeetPerch/ --------------------------------- Never miss a thing. Make Yahoo your homepage.