- EarthLife.net: Extinction in Birds
- Explains what extinction means, reasons, impact of humans, what can be done, and gives a list of species with more information.
- Kiwi Conservation Club: Extinct Birds of New Zealand
- Teaches what extinct means, causes, lists of species, with additional details.
- Ornithology.com: Extinct Bird Species
- Provides common name, Latin name, date of extinction, range, and status of the species or subspecies.
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