When the dinosaurs died off 65 million years ago, it was killer birds 
not mammals which dominated areas of South America. Killer Birds profiled include the flightless ratite Andalgaornis and the larger Titanis, and the huge extinct flying Argentavis. Bob Chandler (of Florida Museum of Natural History) discovers that the titanis wingbone was very dinosaurian, allowing it to grip prey. This Documentary series, produced for the Discovery Channel, using three-dimensional graphics, life-like robotics, skeletal reconstructions, and on-site visits to explore prehistoric animals.
