fairy-wren chicks (IMAGE) Flinders University Caption Aggressive behaviour can help superb fairy-wrens protect their offspring from predation in the nest. Credit Andrew Katsis (Flinders University / University of Vienna) Usage Restrictions Please credit Andrew Katsis (Flinders University / University of Vienna) License Original 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.