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The Thunderbird Petroglyphs of the Upper Midwest - http://www.geocities.com/Athens/Oracle/2596/thunderbird.html
Pictures and article by Kevin L. Callahan discussing thunderbird petroglyphs. |
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Evidence of the Giant Birds - http://sped2work.tripod.com/evidence.html
Evidence that the Native Americans legend of the thunderbird is based on fact. |
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Cryptozoology.com - Thunderbird - http://www.cryptozoology.com/cryptids/thunderbird.php
An article by Craig Heinselman discussing the cryptid, sightings, and the elusive "Thunderbird Photograph". |
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Thunderbird - http://www.geocities.com/capedrevenger/thunderbird.html
A discussion of the cryptid and what it might be. |
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A Comparison of Certain North American Birds to the Thunderbird - http://cryptosquared.tripod.com/insights/tbirdcomp.html
An article by Willie Shughart that compares "five of the largest birds to occur in the contiguous United States and southern Canada" to the thunderbird. |