Table 1 Explained variation, eigenvalues and factor loadings for six principal component axes (PC1-PC6)
| Â | PC1 | PC2 | PC3 | PC4 | PC5 | PC6 |
|---|---|---|---|---|---|---|
Explained variation (%) | 34.8 | 19.6 | 16.6 | 12.6 | 10.9 | 05.5 |
Eigenvalues | 2.09 | 1.17 | 1.00 | 0.76 | 0.66 | 0.33 |
Bill length | 0.28 | 0.74 | 0.17 | 0.55 | -0.19 | 0.06 |
Bill width | 0.43 | -0.12 | 0.76 | -0.29 | -0.36 | 0.02 |
Bill depth | 0.67 | 0.07 | 0.32 | 0.02 | 0.67 | -0.04 |
Tarsus length | 0.33 | 0.66 | -0.32 | -0.59 | -0.02 | 0.07 |
Wing length | 0.77 | -0.38 | -0.29 | 0.12 | -0.09 | 0.40 |
Body mass | 0.82 | -0.16 | -0.32 | 0.08 | -0.20 | -0.40 |