A new study led by the Konrad Lorenz Research Center for Behavior and Cognition at the University of Vienna sheds light on a long-standing mystery in animal behavior: Why do certain individuals gain more influence than others within a group? The research shows that bold geese—but not aggressive ones—are more likely to be accepted as leaders, while exploratory individuals tend to follow them—revealing a nuanced interplay of personality and social roles in collective movement decisions. The results of the study have just been published in the journal iScience.