Thunderbird (Subscribe)
Links
Evidence of the Giant Birds popular
http://sped2work.tripod.com/evidence.html
Evidence that the Native Americans legend of the thunderbird is based on fact.
Cryptozoology.com - Thunderbird
http://www.cryptozoology.com/cryptids/thunderbird.php
An article by Craig Heinselman discussing the cryptid, sightings, and the elusive "Thunderbird Photograph".
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.