Green-billed Toucan (IMAGE) University of California - Santa Cruz Caption Toucans, such as this green-billed toucan, are major dispersers of seeds of some tropical forest trees, including palms. Credit John Thompson Usage Restrictions For use only with news coverage of this research. 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.