Affiliation: | 1. Department of Behavioural Ecology, University of Göttingen, Göttingen, Niedersachsen, Germany;2. Endocrinology Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany;3. Department of Behavioural Ecology, University of Göttingen, Göttingen, Niedersachsen, Germany Primate Social Evolution Research Group, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Niedersachsen, Germany |