Table 3. Mean (± SE) female and male aggressions/h towards a potential competitor (unpaired bird) that was either more or less attractive than themselves.

	Competitors
	More attractive	Less attractive
Female aggressions	57.43±27.5 (7)	151.28±73.2 (7)
Male aggressions	100.80±51.1 (5)	69.86±40.8 (9)

The number of tested pairs is given in brackets.