The Evolution of Primate Behavior

adapted adult males aggressive Altmann animals apes arboreal baby banana birds brachiation branch bushbaby cage cebus child chimpanzees colobus communication complex Courtesy dominance ecology environment estrus evolved feeding females Figure Folia Primal forest fruit Galago Gardner gelada gestures gibbon gorilla grade grooming guenon habitat hamadryas baboons hand Hanuman langur harem Harlow hierarchy Hladik home range howler human individual infant innate Japanese macaques Jolly juvenile language Lawick-Goodall leaf-eaters leap learning mammals mangabey manipulation marmoset mating mother Napier nest Nilgiri langur normal objects observer Old World monkeys patas patas monkey pattern Piaget pigtailed play potto predators primate species primates problem prosimians rhesus macaques rhesus monkeys ringtailed lemur Rowell Savanna baboon season seems Senegal bushbaby sexual sifaka signal situation smile social behavior spotnose squirrel monkey stage sticks structure symbols talapoin tamarin territory tests threat titi trees troop vervet Washoe whereas wild young