Wood Warbler (IMAGE) University of East Anglia Caption Migratory birds that are 'set in their ways' could be more vulnerable to environmental impacts -- according to new research from the University of East Anglia. Many species of migratory birds are in decline as a result of human impacts such as climate change and habitat loss. New research published today reveals why some species are more vulnerable than others. Credit Aldina Franco, University of East Anglia 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.