Bird Migration Transects Graphic (IMAGE) Cornell University Caption Radar technology is helping to put a more precise number on the birds migrating through the United States each fall and spring. Credit Jillian Ditner, Cornell Lab Science Illustrator 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.