Kangaroos (IMAGE) Springer Caption Kangaroos feed in fission-fusion groups but mothers who isolate themselves with their young improve offspring survival. Credit Wendy J. King, Biology Department of the University de Sherbrooke, Quebec, Canada 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.