Ruddy Shelduck (Tadorna ferruginea) (IMAGE) University of Exeter Caption A Ruddy Shelduck Credit Khalid Sharif Usage Restrictions Editorial use to illustrate accompanying research credit Khalid Sharif 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.