New Warbler Hybrid (IMAGE) Cornell University Caption Graphic shows predicted family tree of warblers leading to the three-species hybrid. Blue-winged, Golden-winged, and Brewster's Warblers by Liz Clayton Fuller; Chestnut-sided Warbler from del Hoyo et al. (2018) Handbook of the Birds of the World Alive; new hybrid by Jillian Ditner. Credit Cornell Lab of Ornithology 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.