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. 2014 Nov 24;111(51):18189–18194. doi: 10.1073/pnas.1409507111

Table 1.

Estimated daily average party size and kin composition

Life period Offspring Party size Maternal kin Maternal nonkin
First 6 mo Sons 7.49 1.30 5.89
Daughters 5.34 0.91 4.19
Late infancy Sons 5.11 0.96 4.15
Daughters 4.21 0.70 3.51

Least square means were generated from a model that included maternal rank and year nested in season. All comparisons between mothers with sons and mothers with daughters were significant (P < 0.05).