Table 2 |
||
|
Principal components analysis of morphological data. |
||
|
Variables |
Factor loadings |
|
|
PC1 |
PC2 |
|
|
|
||
|
Wing length |
.71 |
.48 |
|
Tail length |
.67 |
.55 |
|
Tarsus length |
.83 |
.23 |
|
Bill length |
-.37 |
.69 |
|
Bill depth |
-.57 |
.63 |
|
Bill width |
-.74 |
.40 |
|
Variance explained |
44% |
28% |
|
|
||
|
Coefficients of correlation between morphological variables and the derived principal components extracted by principal components analysis. |
||
|
Milá et al. BMC Evolutionary Biology 2010 10:158 doi:10.1186/1471-2148-10-158 |
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