Crowley (IMAGE) University of Cincinnati Caption UC professor Brooke Crowley is using chemical analysis of feathers to track the origins of wide-ranging birds of prey. Credit Joseph Fuqua II/UC Creative Usage Restrictions None License Original 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.