Figure 2.

Allocation of an individual's companion slots to her associates. The histogram shows the fraction of an individual's companion slots that she allocates to spend with her m-term associates, where m is shown on the x-axis (see Methods for details). Black bars represent the observed mean values, and error bars indicate ± 1 standard error (N = 51). Gray bars represent the distribution expected if individuals chose their companions randomly every season.

de Silva et al. BMC Ecology 2011 11:17   doi:10.1186/1472-6785-11-17
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