For the other poster to say that "most of America [is] covered by hunters, fishermen, hikers, climbers, trail bikes, ATVs..." and thus someone should have found bones of a Bigfoot by now is wrong. Most folks do not venture off the beaten path, whether it is a trail or dirt road and most animals go to die in heavy brush or are carried there to be eaten by predators. How may bird bones does one find in his own backyard? With all the birds flying about, there should be thousands of bird skeletons all over the place.
Thanks!