Table 1.

Clutch size and the number of hatchlings before manipulation and on day 11 post-hatching in control and enlarged broods (mean±s.d.).

	control broods	enlarged broods	t	d.f.	p
clutch size	11.77±1.38	11.73±1.12	0.12	42	0.905
hatching date	51.00±2.76	51.18±2.74	−0.22	42	0.827
number of hatchlings	10.91±1.54	11.22±1.15	−0.78	42	0.442
number of nestlings	10.59±1.74	13.55±1.87	−5.43	42	<0.0001