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Université de Neuchâtel

Vocal, gestural and locomotor responses of wild chimpanzees to familiar and unfamiliar intruders : a playback study

Herbinger, Ilka ; Papworth, Sarah ; Boesch, Christophe ; Zuberbühler, Klaus

In: Animal behaviour, 2009, vol. 78, no. 6, p. 1389-1396

Wild chimpanzees can be dangerously violent against individuals that do not belong to their community, indicating a strong selection pressure on decision-making abilities in this context. The presence of a neighbouring male indicates a serious threat, although encountering an unfamiliar male is potentially even more dangerous because it indicates the arrival of a new group with whom the subjects...