<em>Gastornis</em> (IMAGE) University of Colorado at Boulder Caption A new study involving CU-Boulder and the Chinese Academy of Sciences has confirmed that a flightless bird weighing several hundred pounds roamed Ellesmere Island in the high Arctic about 50 million years ago. Credit Illustration by Marlin Peterson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.