This article by Judith Lewis gives author John Nielson's version of the California condor saga. Full story here."No creature that has ever evolved, not the passenger pigeon, the flightless dodo or even the turgid-blossom pearly mussel, has a history that demonstrates more vividly man’s impact on the Earth than the California condor, the massive, black-bodied, bald-headed bird that spent the Pleistocene Era feasting on dead mastodons and the last decades of the 20th century behind bars in California zoos."