Table 2. Animal model variance component analysis of mate forehead patch size in collared flycatcher females.

Variance component	Variance	SE	Ratio to VP	SE	LRT χ2	p	Fixed effect	F	df	p	r	CIL	CIU
Additive genetic	9.490	5.243	0.042	0.023	2.14	0.144	Intercept	3132.88	1, 21.5	0.003
Permanent environment	0.000	-	0.000	-	-	-	Binary mate age	15.83	1, 1959.9	<0.001	0.090	0.046	0.133
Nestbox plot	3.756	2.782	0.016	0.012	11.46	<0.001	Binary experience	2.43	1, 1886.1	0.120	0.036	-0.008	0.080
Year	17.156	6.523	0.075	0.029	77.58	<0.001
Residual	197.978	7.957	0.867	0.035

Likelihood ratio tests (LRT) of random effects refer to removal from the full model. The significance of fixed effects was tested with conditional Wald F tests in ASReml. The permanent environment effect was bound to zero and its SE could not be estimated. r, effect size (Pearson r); CIL, lower 95% confidence interval; CIU, upper 95% confidence interval.