Table 3.
Results from varimax‐rotated principle component analysis of urban habitat
| PC1 | PC2 | PC3 | |
|---|---|---|---|
| Humidity | −0.560 | 0.118 | −0.163 |
| Ambient temp. | 0.616 | −0.008 | 0.010 |
| Perch height | −0.112 | −0.040 | −0.571 |
| Perch diameter | −0.188 | 0.477 | −0.048 |
| Nearest perch | 0.136 | 0.011 | −0.786 |
| Veg. canopy | −0.125 | −0.631 | 0.014 |
| Perch temp. | 0.473 | 0.108 | −0.136 |
| Perch roughness | −0.042 | −0.589 | −0.087 |
| Cumulative % variance | 26.87 | 52.05 | 65.28 |
| Significance: Species | p < .001*** | p = .001** | p = .107 |
| Significance: perch type | p < .001*** | p < .001** | p = .002** |
| Eigenvalue | 2.150 | 2.015 | 1.058 |
Significance for t tests comparing principal components between A. stratulus and A. cristatellus are given in the row labelled “Significance: Species,” and significance for t tests comparing principal components between natural and manmade perches are given in the row labelled “Significance: Perch Type”. Significant loadings are bolded and shaded. Significance levels for species and perch type ANOVAs are: ***p < .001, **p < .01.