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Decisions to help based on kinship. (a) % individuals that provided care when kin were present versus absent in their social group. (b) % individuals choosing to help at the nests of kin versus non-kin where the choice was available. Sample sizes are provided in the bars when specific to that bar, or between bars when specific to the comparison. Differences are shown as significant (*, p < 0.05) or non-significant (n.s., p > 0.05).
