Icelandic Black-Tailed Godwit (image) University of East Anglia Caption Researchers at the University of East Anglia have found out why birds are migrating earlier and earlier each year. Experts have long suspected climate change is somehow driving this advancing migration pattern. But new research published today reveals that individual birds migrate like clockwork -- arriving at the same time each year. However, climate warming is resulting in earlier nesting and hatching earlier each year, and this appears to be linked to the advancing migration. Credit Tomas G Gunnarsson (University of Iceland) Usage Restrictions None 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.