Table 1.

Correlation matrix (Pearson r values) for approach, male singing, and playback variables.

	Prop time <15m	Closest appr	Latency to first retreat	Matching rate	Overlap rate	Versatility	Pre-pbk song rate	Dur-pbk song rate	Male song length	Overlaps by playback	Matches by playback	Male age
Latency first appr	−0.210	0.149	−0.177	−0.260	0.062	0.064	0.248	0.197	−0.031	0.040	0.037	0.209
Prop time <15m		−0.418*	0.520*	0.323	−0.206	−0.011	−0.134	0.023	0.266	0.065	0.179	−0.240
Closest approach			−0.548**	−0.257	0.024	−0.134	0.355*	0.129	0.070	0.109	−0.195	0.266
Latency to retreat				0.395*	−0.338*	0.228	−0.232	−0.146	0.333	−0.221	0.291	−0.074
Matching rate					0.013	0.115	−0.075	−0.128	0.431*	0.031	0.177	0.072
Overlapping rate						0.096	0.061	0.177	−0.266	0.140	0.241	−0.279
Versatility							0.467*	−0.265	0.156	−0.360*	0.634**	−0.007
Pre-pbk song rate								0.164	0.239	−0.061	0.400*	0.270
Dur-pbk song rate									−0.181	0.791**	0.088	0.206
Male song length										−0.116	0.201	0.134
Overlaps by playback											−0.067	0.104
Matches by playback												0.051

^*P < 0.05,

^**P < 0.001.