Table 1.

Treatment and sex × treatment effects of OTA for non-pairing behaviours in subjects with i.c.v. cannula placements (all p > 0.05).

behaviour	control female (mean ± s.e.m.)	control male (mean ± s.e.m.)	OTA female (mean ± s.e.m.)	OTA male (mean ± s.e.m.)	treatment		sex × treatment
					F1,1,26	p-value	F1,1,26	p-value
total same-sex aggression	0.54 ± 0.22	1.73 ± 0.76	0.202 ± 0.10	1.31 ± 0.48	0.623	0.437	0.006	0.938
total aggression	0.91 ± 0.24	2.37 ± 0.91	0.421 ± 0.21	1.95 ± 0.60	0.611	0.442	0.003	0.960
directed song (males only)	—	0.34 ± 0.09	—	0.80 ± 0.12	2.132	0.156	—	—
undirected song (males only)	—	0.01 ± 0.01	—	0.08 ± 0.04	1.691	0.205	—	—
greet	0.03 ± 0.03	0.02 ± 0.01	0.004 ± 0.004	0.02 ± 0.01	0.956	0.337	0.857	0.363
beak wipe	0.21 ± 0.09	0.30 ± 0.10	0.10 ± 0.05	0.23 ± 0.04	1.411	0.246	0.073	0.790
feeding movements	2.22 ± 0.51	1.16 ± 0.48	1.50 ± 0.37	1.19 ± 0.25	0.693	0.413	0.844	0.367
drinks	0.06 ± 0.02	0.07 ± 0.04	0.07 ± 0.03	0.05 ± 0.01	0.036	0.851	0.501	0.485
preen	0.09 ± 0.02	0.03 ± 0.01	0.10 ± 0.02	0.03 ± 0.01	0.090	0.766	0.031	0.861
time in nest (s)	808.9 ± 200.6	354.6 ± 136.2	469.5 ± 190.2	911.4 ± 278.1	0.233	0.634	3.952	0.058