General Animal Links:
Animal Droppings Identification.
Wildlife Identification by the National Wildlife Federation.
Invertebrate Links:
Guide to Insect Identification.
Herp Links:
Center for North American Herpetology.
Bird Links:
American Ornithologists' Union Checklist of North American Birds.
Birding.com: Birding In the USA and Around the World.
Cornell University's Ivory-billed Woodpecker Page.
Ivory-billed Woodpecker Conservation Partnership.
Ivory-billed Woodpecker Call (requires Windows Media Player).
Partners in Flight Landbird Population Index
Mammal Links:
Bat Conservation International.