posted on Dec, 18 2008 @ 05:52 PM
Cryptozoology considers them to be thunderbirds. Atleast the second and third one.
“What then is the Thunderbird? It is a mystery. It has been reported by Native Americans and people today from all walks of life as an enormous
bird, larger than any known species, but similar in appearance to a condor. Theories as to what the Thunderbird may be have run the gamut from
surviving pterodactyls to the teratorns. The teratorns were large predatory birds from the Pleistocene that exhibited wingspans of upwards of 25 feet.
Although thought to be extinct, their general presumed appearance is that of a giant condor-like species, similar in appearence to the Thunderbird.
North America has many mysteries, among them the Thunderbird. These creatures are surely one of the most enigmatic cryptids in the world. With
misinformation abounding, such as the "Thunderbird Photograph," and the lack of support in searching for these birds, it is no wonder that these
creatures have evaded discovery like so many others from around the world.”
[edit on 18-12-2008 by Ant4AU]