Serious Fun
| NJ Audubon Society | Hummers Fledging (thanks Maggie!) |
| Cornell Lab of Ornithology | Great Red Tail Hawk pics |
| Birdzilla | US FWS Eaglecam |
| New Jersey Birding | The Best on-line guide |
| Feathertalk | Nice bird pics |
| Delaware Valley Birdwatchers wiki | |
| Powdermill Avian Research Center | |
| American Birding Association | |
| American Ornithologists' Union | |
| Association of Field Ornithologists | |
| Golden Gate Raptor Observatory | |
| Hawk Mountain | |
| National Bird-Feeding Society | |
| Peregrine Fund | |
| Whitefish Point Bird Observatory | |
| Three Rivers Birding Club (SW PA) | |
| Wilson Ornithological Society | |
