Fig. S1 Modified boxplots depicting the simulated and observed difference in standardized variance in male reproductive (ΔIm) success across seasons. The filled circles depict the observed variance in male reproductive success. The box depicts the 25th and 75th quartiles, the solid line is the median and the whiskers are the 2.5% and 97.5% percentiles.

Table S1 Number of individuals captured in the periphery and their proximity to the main colony.

Table S2 Season-wise turnover in the colony.

Table S3 Summary statistics of the microsatellite markers used in this study.

Table S4 Mean estimate of relatedness (QuellerGt) among adults. Relatedness was estimated in Coancestry version 1.0 program (Wang 2010).

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