Table 2.

PC analysis

	Female PC	PC 2	PC3	PC4	PC5	PC6
Directed singing
Frequency	-0.401	0.759	-0.331	-0.187	0.187	-0.038
Duration	-0.395	0.693	-0.412	-0.186	0.071	0.067
Beak wipe to female	-0.172	0.395	0.552	0.409	0.243	0.391
Beak wipe away from female	-0.140	0.309	0.724	0.160	-0.027	0.464
Beak wipe toward male	0.146	0.573	0.637	-0.225	0.020	-0.348
Beak wipe away from male	0.259	0.545	0.604	-0.269	0.119	-0.367
Male approaching female	-0.192	0.745	-0.386	-0.030	-0.170	0.142
Female approaching male	0.844	0.292	-0.119	-0.013	-0.043	0.017
Male in proximity of female
Frequency	0.067	0.427	-0.142	0.792	0.219	-0.159
Duration	-0.102	0.082	-0.155	0.830	0.200	-0.360
Female-initiated clumping
Frequency	0.866	0.052	-0.151	0.062	-0.069	0.183
Duration	0.560	-0.066	-0.105	0.238	-0.098	0.296
Female in proximity of male
Frequency	0.725	0.267	0.020	0.123	-0.375	-0.126
Duration	0.722	0.142	-0.068	0.053	-0.358	-0.124
Female preening male
Frequency	0.819	0.120	-0.034	-0.157	0.361	0.002
Duration	0.852	0.185	-0.119	-0.091	0.297	0.184
Attempted mount	-0.263	0.780	-0.242	-0.072	-0.277	0.128
Beak fencing	0.178	-0.075	-0.220	-0.252	0.790	0.040
Eigenvalues	4.828	3.525	2.247	1.881	1.435	1.009

Loadings over 0.5 are indicated with bold type.