The Feeding Habits of Galapagos Tortoises (IMAGE) Washington University in St. Louis Caption A male tortoise on the island of Santa Cruz in the Galapagos Islands during a 'feeding bout.' Field research in which scientists counted every bite and bout showed that, if anything, the giant tortoises prefer non-native plants. Credit Christian Zeigler 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.