Gary (IMAGE) Stanford University Caption In order to better understand the versatile gripping abilities of birds, researchers at Stanford taught parrotlets - like this bird, Gary -- to fly to perches made of different materials, including natural woods, foam and Teflon. Credit Kurt Hickman/Stanford News Service Usage Restrictions Image may only be used with appropriate caption or credit 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.