Christin Palmstrom, Cambridge University (IMAGE) University of California - Santa Barbara Caption Christin Palmstrom measures a grackle's skull. Credit Courtesy of Sonia Fernandez 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.