130 
Psyche 
[June 
at a hovering site means that a male gains no particular advantage 
by returning to a specific location day after day. 
Acknowledgments 
I would like to thank my assistants, Fred Lindstrom, Kathy 
Opfenring, Terry Ponder, David Post, and Patricia Ryan, for 
their hard work and good company in the field. This study was 
supported by NSF Grant DEB76-04503. 
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