Table 1. Numbers of animals of each sex and stimulus condition exhibiting no or very modest labeling in two cortical song control regions, LMAN and HVC.

		LMAN		HVC
	Score*	Rhythmic	Arrhythmic	Rhythmic	Arrhythmic
Male	0	7	7	6	7
	1	2	2	3	3
Total		9	9	9	8
Female	0	8	6	4	5
	1	1	2	2	1
Total		9	8	6	6

*0 = no detectable ZENK expression; 1 = very light or sparse labeling; 2 = dark or dense labeling (no individuals were assigned this score).