Table 9. Mean percentage (± SE) of co-occurrence between a behaviour and a production of sounds.

Behaviours	Nest (N = 7 females, n = 26)	Eggs (N = 4 females, n = 19)	Mann - Whitney
Frontal Display	30±5	80±6	***
Mouth Fighting	–	45±12	***
Lateral Display	17±7	22±16	ns
Nest Hover	8±4	18±5	***
Nest Digging	45±6	36±25	*
Nest Display	19±8	38±13	*
Chase	2±1	15±7	***

Mann-Whitney test: NS p>0.05,

^*p<0.05,

^***p<0.001.

Nest = territorial female; Eggs = Female incubating eggs.