Merlin with Monarch (IMAGE) Texas A&M University Caption Texas A&M University biologist Christine Merlin studies Monarch butterflies to learn more about animal migration, the role of circadian clocks in regulating daily and seasonal animal physiology and behavior, and the evolution of the animal clockwork. Credit Texas A&M University 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.