Alexander Gerson with Swainson' Thrush (IMAGE) University of Massachusetts Amherst Caption Eco-physiologist Alex Gerson will use two ultra-specialized tools, a field-portable quantitative magnetic resonance imaging machine and a wind tunnel designed to study long-duration flight, to study the metabolism and physiology of birds like this Swainson's thrush in migration. Credit UMass Amherst 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.