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Female Chimpanzees Use Copulation Calls Flexibly to Prevent Social Competition

Figure 3

Audience effects.

Mean number of individuals in the audience in the presence/absence of a copulation call. Female audience (Nfemales = 5, Ncopulations = 90): the number of adult females present. Male audience (Nfemales = 7, Ncopulations = 126): the number of adult males present. Error bars represent Mean+−1 SE.

Figure 3

doi: https://doi.org/10.1371/journal.pone.0002431.g003