Table 4 in Sexual dimorphism and foraging niche partitioning in the Middle Spotted WoodpeckerDendrocopos medius

Table 4. Components extracted by PCA (varimax rotation, eigenvalue 1.O) from foraging variables of both periods combined. Percentages arcsine (√x)-transformed prior to analysis. Numbers in bold are loadings ≥ │0.45│ used for interpretation of the components; n = 42. ComponentVariables12345Gleaning (%)0.2200.326-0.2940.6650.375Probing (%)0.400-0.0840.597-0.542-0.048Sapsucking (%)0.014-0.308-0.416-0.264-0.705Searching (%)-0.9250.0450.0210.0880.151Lower crown (%)0.7590.047-0.093-0.4160.124Upper crown (%)-0.7150.281-0.5130.1490.042Living substrate (%)-0.3290.002-0.0220.8280.035Substrate diameter (cm)-0.0520.0350.8800.041-0.116Conifers (%)0.155-0.2250.053-0.7140.079Hornbeam (%)0.021-0.928-0.0560.0170.009Lime (%)0.0780.0470.3820.006-0.864Oak (%)-0.1140.715-0.2550.2440.471Living trees (%)-0.124-0.1970.1400.6310.230Mean tree dbh (cm)-0.0610.8580.0270.0370.023Eigenvalue4.4132.3041.7361.5561.095Explained variance (%)16.617.813.619.012.3