1. Department of Animal Ecology, Netherlands Institute of Ecology (NIOO-KNAW), The Netherlands
2. Netherlands Institute for Neuroscience (NIN-KNAW), The Netherlands
3. Department of Biosciences, University of Helsinki, Finland
4. Department of Biological Sciences, Simon Fraser University, Canada
5. Departement d'Ecologie Evolutive, Centre d'Ecologie Fonctionnelle & Evolutive, France
6. Department of Behavioural Neuroendocrinology, University of Edinburgh, Scotland