Photograph and drawing of the Thunderbird.
|Year First Seen||N/A|
Some cryptozoologists today compare thunderbirds to pterosaurs, giant birds of prey that roamed the skies 115 million years ago.
Even before the turn of the 20th century, a group of cowboys in the southwest United States claimed to have killed an enormous bird, which they nailed to the side of a barn and photographed (the photo has since been lost).In July 1977, a boy from Lawndale, Illinois claimed to have been attacked by a giant bird, which clamped onto him and then lifted him for a distance of at least 30 yards. He managed to escape unharmed. Other sightings of enormous birds in New Mexico, Alaska, Texas and Pennsylvania have been reported in recent years.
But some think the witnesses may simply have misjudged the birds' size. The largest scientifically recognized bird in North America is the California condor, with a wingspan of up to 10 feet.
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