Table 1. Results for Principal Component Analysis of behavioural responses of 76 little brown bats in a novel-environment test.

Variables	Components
	1	2	3
Locomotion	0.481	−0.324	0.042
Echolocation	0.422	0.087	−0.096
Flight	0.455	0.171	−0.040
Latency to Enter	−0.339	0.556	−0.159
Latency to Head Dipin Holes (edge)	−0.237	−0.714	−0.092
Latency to Head Dipin Holes (centre)	−0.382	−0.192	0.412
Grooming	−0.257	0.052	−0.886
Standard Deviation	1.47	1.03	0.97
% of total variance	31.4	15.4	13.6
Cumulative Variance (%)	31.4	46.7	60.4

Principal Components retained met the Kaiser-Guttman criterion (i.e., eigenvalues >1, [44]). Bolded eigenvectors represent factors with loadings >0.4, which were considered to have contributed significantly to a particular component [40].