Table 4.

Overall additive variance–covariance matrix (G) for untransformed beak traits. Genetic covariances are below the diagonal, genetic variances on the diagonal and genetic correlations are above the diagonal. g_i are eigenvectors associated with λ_i eigenvalues.

	beak length	beak depth	beak width	g1	g2	g3
beak length	0.022	0.654	1.01a	0.18	0.69	−0.71
beak depth	0.059	0.366	0.834	0.95	−0.32	−0.07
beak width	0.045	0.098	0.038	0.27	0.65	0.71
λ				0.39	0.04	0.02
% var				85.2	8.7	6.1

Bold genetic variances are significantly different from zero. Bold eigenvalues values explain significant amount of variation (see text for details).

^aNot significantly different from unity.