for disambiguation of the plural "Thunderbirds"
may refer to:
- Thunderbird (mythology), a mythical creature common to indigenous cultures of North America who are believed to protect humans by fighting evil spirits
- Thunderbird (cryptozoology), in cryptozoology, a rumored large flying birdlike creature of the Americas, allegedly the source of the mythical bird.
- Phorusrhacidae, an extinct family of giant predatory flightless birds of South and Central America
- Dromornithidae, an extinct family of giant flightless Australian birds
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