"Dapper Dan", a male peregrine falcon, keeps watch as he circles the 33rd floor of the Pacific Gas & Electric building as scientists from the University of California Santa Cruz Predatory Bird ... more 
"Dapper Dan", a male peregrine falcon, keeps watch as he circles the 33rd floor of the Pacific Gas & Electric building as scientists from the University of California Santa Cruz Predatory Bird Research Group affix leg bands on three baby peregrine falcons Thursday, April 28, 2011, in San Francisco. Each young falcon will get a band on each leg. One band is the normal U.S. Fish and Wildlife Service bird band which contains a phone number to call in the event someone finds a peregrine. The second band is a visual identification band that can be read from a distance with binoculars. less 
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Associated Press | Photo By Ben Margot
Thu, Apr 28, 2011 3:48 PM EDT