Blue Grosbeak (image) University of California - Davis Share Print E-Mail Caption Blue grosbeaks, such as this adult male, are neotropical migrants. They winter in Central America and return each spring to nest on the lower reaches of the creek. Credit Andrew Engilis, Jr./ UC Davis Museum of Wildlife and Fish Biology Usage Restrictions Provide credit Share Print E-Mail 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.