Table 2.

Linear mixed effect models predicting relative individual niche index (RINI; square‐root transformed) and social group isotopic niche size (ell95c) in banded mongooses

	Response	Effect	Estimate	SE	χ2	P	Conditional r 2
Individual‐level	RINI (sqrt)	Intercept	0.94	0.10			0.33
		Age	0.017	0.014	1.59	0.22
		Sex (male)	0.042	0.046	0.89	0.35
		Group size	−0.010	0.003	9.51	0.002
		Proportion of group	−0.40	0.10	12.64	0.0004
	RINI (sqrt)	Intercept	0.82	0.08			0.31
		Age	0.015	0.014	1.13	0.29
		Sex (male)	0.058	0.046	1.71	0.19
		Group size (large)	−0.17	0.064	7.51	0.006
		Proportion of group	−0.37	0.11	10.80	0.001
Group‐level	Group ell95c	Intercept	2.78	2.64			0.11
		Group size	−0.011	0.046	0.059	0.82
		Sampling time	0.0046	0.0047	0.95	0.36
	Group ell95c	Intercept	3.12	2.97			0.11
		Group size (large)	−0.046	0.86	0.0029	0.96
		Sampling time	0.0038	0.0043	0.78	0.40

RINI was calculated as the proportion of the group's niche that the individual niche occupied (see Fig. 1). Social group niche size was calculated using small sample size corrected 95% prediction ellipses (ell95c; Fig. 2). The group size data were bimodal (Fig. 3b) and so models were fitted using a continuous and a categorical group size variable. Significant effects are shown in bold.