| fws.gov | U.S. Fish and Wildlife Service |
| birdingamerica.com | The Search for the Ivory-billed Woodpecker |
| cornell.edu | Cornell Lab of Ornithology: Ivory-billed Woodpecker |
| npr.org | NPR: Ivory-Billed Woodpecker Rediscovered in Arkansas |
| nature.org | The Nature Conservancy: Ivory-Billed Woodpecker |
| sciencemag.org | Science: Ivory-billed Woodpecker (Campephilus principalis) Persists in Continent |
| audubon.org | Audubon Online |
| blogspot.com | Ivory-bills LIVE!! |
| ivory-bill-woodpecker.com | Ivory-billed Woodpecker Conservation Stamp Print Program |
| ibwo.org | Ivory-billed Woodpecker Information |
United States , Texas , Dallas