Table 1 Loadings and proportion of total variation explained by the first two principal components of a PCA on plumage
| Â | All characteristics | No rump | ||
|---|---|---|---|---|
| Â | PC1 | PC2 | PC1 | PC2 |
Head | −0.41467 | −0.18248 | −0.45881 | 0.251218 |
Cheek patch | −0.35569 | 0.932504 | −0.3821 | −0.92093 |
Chest | −0.41984 | −0.12315 | −0.46311 | 0.137698 |
Upper abdomen | −0.42407 | −0.12605 | −0.46715 | 0.178929 |
Lower abdomen | −0.41959 | −0.17329 | −0.45912 | 0.194434 |
Rump | −0.41155 | −0.18987 | NA | NA |
% Total variation | 90.29% | 6.03% | 89.14% | 8.23% |