Behavioral Biology

Wild chimpanzees eat tortoises after cracking them open against tree trunks more

Mothers’ presence influences the reproductive success of their adult sons more

In the black coucal sex-roles are reversed: females aggressively defend their territories and males rear the young. Despite the large effort for parental care, males still find opportunities to sire young in nests of other males, although only succeed half as often as males who are “free” and do not have to tend a brood. more

Researchers record the behaviour of these threatened hunters with underwater cameras and motion sensors more

Male chimpanzees reduce aggression when social relationships in their group are unstable more