No, they are not real.
Thunderbirds eat whales mostly.
Thunderbirds!
Thunderbirds are mythical creatures in Native American folklore, described as large, bird-like beings with supernatural powers. There is no scientific evidence to support the existence of thunderbirds as described in folklore.
Brains - Thunderbirds - was created in 1965.
Carolina Thunderbirds was created in 1982.
Seattle Thunderbirds was created in 1977.
The Production Budget for Thunderbirds was $55,000,000.
Toyama Thunderbirds was created in 2007.
Vancouver Thunderbirds was created in 2005.
The Fabulous Thunderbirds was created in 1974.
Albuquerque Thunderbirds was created in 2005.
Albuquerque Thunderbirds ended in 2010.