Wilson's Warbler (IMAGE) California Polytechnic State University Caption The Wilson's warbler was one of the birds whose songs were recorded for the phantom chorus that improved hikers' sense of well-being. Credit Dave Keeling Usage Restrictions Image may only be used with appropriate caption and credit. 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.