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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: Behav Ecol Sociobiol. 2015 Feb;69(2):303–312. doi: 10.1007/s00265-014-1843-3

Fig. 2.

Fig. 2

Fecal glucocorticoid (fGC) levels of males who did or did not maintain friendships with lactating females during stable and unstable periods. Box plots show inter-quartile ranges and whiskers indicate 95% confidence intervals