July 5, 2007
Weighing in at 150 pounds or more, the all-time biggest bird couldn't just hop into
the air and fly away, researchers say. A team led by Sankar Chatterjee of Texas Tech
University used computer programs originally designed for aircraft to analyze the
probable flight characteristics of Argentavis magnificens, a giant bird that lived
in South America 6 million years ago. Like today's condors and other large birds,
Argentavis would have had to rely on updrafts to remain in the air.