January 30, 2008

Solving the Hummingbird's 'Chirp'

If Anna's hummingbirds chirp with their tail feathers, would that also be true of other species whose males make similar display flights?
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1 comment:

  1. Steve Bodio9:22 AM

    Nighthawks (which of course are not hawks) "boom" with their feathers when courting. Snipe and woodcock also sing with their wing feathers during courtship.

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Play nice, now.