Table 1

Explained variation, eigenvalues and factor loadings for six principal component axes (PC1-PC6)

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


Reifová et al. BMC Evolutionary Biology 2011 11:138   doi:10.1186/1471-2148-11-138

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