Black oystercatchers (IMAGE) University of California - San Diego Caption In their dominance of Hawadax Island, rats preyed upon shore birds such as these black oystercatchers. Credit Rory Stansbury Usage Restrictions Must be used in conjunction with research about Hawadax Island recovery. 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.