July 1, 2009: Chris Clark discusses his fascinating research into hummingbird courtship displays that include mysterious sounds that are not vocalizations.
Hummingbird research at Sagehen from F. Felix on Vimeo.
Here's a short video from Chris introducing his research:
Hummingbird research at Sagehen from F. Felix on Vimeo.
Here's a short video from Chris introducing his research:
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