Table 4.

Results of binomial GLMMs testing the effects of redness or darkness, age, and rank on the likelihood of a female being consorted by a top-ranked male, controlling for female ID and study week, with an offset for the number of observations per female per day. Analyses shown are across the whole dataset

	Estimate	Standard error	z-value	P
Consort by top-ranked male (redness; daily) n = 602 female days
Intercept	−28.067	6.870	−4.085	<0.001
Redness	116.735	43.369	2.692	0.007
Age	0.106	0.383	0.278	0.780
Rank	0.026	0.054	0.480	0.631
Consort by top-ranked male (darkness; daily) n = 602 female days
Intercept	−13.523	4.467	−3.027	0.002
Darkness	−7.912	9.095	−0.870	0.384
Age	0.130	0.342	0.379	0.705
Rank	0.012	0.046	0.268	0.789

Bold values indicate statistical significance (P < 0.05).