Proceedings of the Ninetieth Annual Meeting

The ninetieth annual meeting of the Wilson Ornithological Society (WOS) was held in joint session with the Association of Field Ornithologists (AFO) from Thursday, 9 April, through Sunday, 12 April 2009 at the Hilton Pittsburgh in Pittsburgh, Pennsylvania at the invitation of the National Aviary and Powdermill Nature Reserve, Carnegie Museum of Natural History, in partnership with the Three Rivers Bird Club, Audubon Society of Western Pennsylvania, Duquesne University, University of Pennsylvania, Pennsylvania Game Commission, Western Pennsylvania Conservancy, and the American Birding Association. [...] longer trips were scheduled for Sunday to: (1) Powdermill Nature Reserve, the biological research station of Carnegie Museum of Natural History with a trip to Frank Lloyd Wright's Fallingwater; (2) the Pittsburgh Zoo and view of downtown Pittsburgh from an amphibious tour vehicle; (3) the University of Pittsburgh campus, home of a breeding pair of Peregrine Falcons (Falco peregrinus), and a tour of the Carnegie Museum of Natural History; (4) the Pymatuning Laboratory of Ecology in northwestern Pennsylvania; and (5) Moraine State Park and Lake Arthur.