Figure 5.

Experimental and theoretical dynamics of aggregation in groups of 20 flies in the presence of two refuges. (a) Experimental data. (b–e) Theoretical data (n = 200 simulations for each condition). (b) Influence of group size on the probabilities of leaving and of choosing a refuge. (c) Influence of group size on the probability of leaving a refuge, not on the probability of choosing a refuge. (d) Influence of group size on the probability of choosing a refuge not on the probability of leaving a refuge. (e) No influence of group size on the probabilities of leaving or choosing a refuge (mean ± 95% CI). (Online version in colour.)