Figure 1
From: Male food defence as a by-product of intersexual cooperation in a non-human primate
Probability that male vervet monkeys approached simulated intruders during playback experiments.
Probability that males approached the speaker during playback experiments, depending on (a) their rank, (b) whether female group members did versus did not have access to provisioned resources (c) the number of females in their audience, and (d) whether or not a female group member led an approach first. Predicted values and predicted standard errors (error bars and dotted lines) were obtained by setting all additional factors in the GLMM model to their mean (or median for binary variables) value.
