Source - https://www.atlasobscura.com/articles/t ... ptid-ockerThunderbirds are essentially big birds—big, terrifying birds. According to George M. Eberhart’s seminal Mysterious Creatures: A Guide to Cryptozoology, the wingspan of a thunderbird can be as much as 70 feet. For comparison, the largest bird in North America, the California condor, has a wingspan of 10 feet. The largest bird in the world, the wandering albatross, has a wingspan of 12 feet. You have to go to prehistoric times to find a larger bird: Some teratorns had wingspans of 20 feet. Thunderbirds are bigger than some planes.
I have not heard much about them. Only recently did I read up on them and they sound fascinating. The thought of a bird that is 70 feet in size flying around int he night sky is terrifying!
I have to wonder though, could this be the result of Native Americans seeing the future and seeing airplanes or maybe time travelers with planes in the past?