Reports of gigantic birds -- much larger than any known bird -- have been reported for hundreds of years. Native Americans call them Thunderbirds. Here are some true accounts and information.
Pennsylvania Thunderbird
About 60 people saw this Thunderbird while picnicking for Memorial Day in Pennsylvania.
Texas Thunderbirds Sighting
Kat's family lived in a cul-de-sac in San Benito, Texas when they saw what they think were Thunderbirds flying in and out of the clouds.
Thunderbird Returns
A night watchman sees a thunderbird over his workplace in Pittsburgh.
Thunderbirds Over Illinois
Ben saw thunderbirds on May 3, 2010 in McHenry, Illinois at 3:45 p.m. when sitting in his goat pasture.
