Yes, the "hummingbird dance" of which Caitlin wrote is a display put on by
the male. It's not aggressive per se. Probably functions as so many of
these displays do, both to inform other males that "this space is taken"
and to attract females.

Dennis Paulson, Director phone 206-756-3798
Slater Museum of Natural History fax 206-756-3352
University of Puget Sound e-mail dpaulson at ups.edu
Tacoma, WA 98416