A Monarch Butterly (1 of 2) (IMAGE) University of Guelph Caption A new study from the University of Guelph tracks monarch butterflies migration pattern, and follows them by generation. This study provides some clues as to why the butterflies population has been dropping recently. Credit University of Guelph - Jessica Linton 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.