Table 4. Principal component analysis (PCA) loadings of plumage characters of Pelecanoides georgicus samples.
| Variable | PC1 | PC2 |
|---|---|---|
| Contrasting ear covert extent | 0.250 | -0.451 |
| Collar extent | 0.454 | 0.026 |
| Contrasting scapular extent | -0.334 | -0.370 |
| Contrasting secondary marking extent | -0.384 | -0.131 |
| Contrasting secondary marking shape | -0.355 | 0.256 |
| Contrasting ear covert colour | 0.365 | -0.071 |
| Collar colour | 0.392 | -0.319 |
| Flank colour | 0.246 | 0.685 |
| Variance explained | 42.17% | 14.04% |
| F (ANOVA) | 132.840 | 15.095 |
| df (ANOVA) | 165 | 165 |
| p (ANOVA) | < 0.001 | < 0.001 |