Table 2.

Sex differences in the number of aggressive interactions of different categories and role of the birds in these interactions (Mann-Whitney U tests)

Category of interaction (number/h)	Z	p	Females (n = 27)				Males (n = 32)
			Median	Q1	Q3	Range (min–max)	Median	Q1	Q3	Range (min–max)
Type of aggressive interactions:
All	−5.70	<0.001	0.38	0.2	0.78	0.00–1.75	1.90	2.81	1.31	0.17–4.45
Threatening (1st degree)	−4.56	<0.001	0.16	<0.001	0.26	0.00–1.33	0.72	0.97	0.43	0.00–1.65
Threatening with physical contact (2nd degree)	−4.58	<0.001	0.17	<0.001	0.30	0.00–1.50	0.83	1.38	0.47	0.00–2.78
Fight (3rd degree)	−5.67	<0.001	<0.001	<0.001	0.00	0.00–0.41	0.28	0.50	0.23	0.00–1.8
Role in aggressive interactions:
Receiver	−1.73	0.08	0.22	0.08	0.55	0.00–1.33	0.34	0.57	0.21	0.00–1.10
Initiator	−6.28	<0.001	0.00	<0.001	0.06	0.00–0.16	0.76	0.38	1.19	0.00–1.9