Table 2.

Estimated variance components (±s.e.m.) from linear mixed-model analysis of τ in the four broods of great tits (n = 21) that contained both extra-pair and within-pair young.

random term	variance component	proportion of total variance (%)
brood	0.01394 ± 0.0134	22.9
extra-pair paternity	0.03571 ± 0.0523	58.7
residual (individual)	0.01120 ± 0.0040	18.4
total phenotypic variance	0.06085	100