apes. University of California Press, Berkeley Pika S Gestures in subadult bonobos. In: Call J, Tomasello M The gestural communication of apes and monkeys. Lawrence Erlbaum Associates, London, pp 41 7 Pika S, Liebal K, Tomasello M Gestural communication in subadult bonobos: repertoire and use. Am J Primatol 5:39 1 Plooij FX The behavioral development of free-living chimpanzee babies and infants. Ablex, Norwood, NJ Pollick AS, Jeneson A, de Waal FBM Gestures and multimodal signalling in bonobos. In Furuichi T, Thompson J Bonobos: behavior, ecology and conservation. Springer, New York, pp 7594 Pollick AS, de Waal FBM Ape gestures and language evolution. Proc Natl Acad Sci USA 104:81848189 Pruetz JD Feeding ecology of savanna chimpanzees at Fongoli, Senegal. In: Hohmann G, Robbins MM, Boesch C Feeding ecology in