www.audubon.usf.edu - Florida Audubon Society
www.greenwater.com - Greenwater Publishing, Gallery of Nature Art
www.birds-of-prey.org - Birds of Prey Foundation - Colorado
www.falconrycentre.com - The Falconry Centre - Ontario
www.peregrinefund.org - The Peregrine Fund - Oregon
www.pwrc.usgs.gov - Patuxent Wildlife Research Center - Maryland
www.birding.about.com - Sites about Birding/Wild Birds
www.ggro.org - Golden Gate Raptor Observatory - California
http://nighthawk.boisestate.edu/ris/ - Raptor Information System - Idaho
www.raptor.cvm.umn.edu - Raptor Center, University Minnesota