Affiliation: | aCentER, Tilburg University, The Netherlands;bCERCOPAN (Centre for Education, Research and Conservation of Primates and Nature), Nigeria;cLaboratoire de Biométrie et Biologie Evolutive, UMR 5558, CNRS, Université Lyon1, France;dEthologie Evolutive, DEPE, IPHR, UMR 7178, CNRS-UdS, France |