Tree Swallow (IMAGE) Cornell University Caption Tree Swallow feeding insects to chick. Credit Brian E. Kushner, courtesy Cornell Lab of Ornithology. Usage Restrictions Only for use with articles about this research. 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.