Migration Routes (image) University of Exeter Share Print E-Mail Caption This map shows three migration routes monitored during the research. Each one illustrates one of the three main migration strategies identified by the research. Credit Matthew Witt Usage Restrictions None Share Print E-Mail 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.