Table 3.

Effects of alert behaviors (frequency of standing at the nest and leaving the nest), site and clutch initiation on 1) the total number of eggs hatched, and 2) total number of nestlings that survived until day 12

Response variable	Effect	Estimate (mean ± SE)/Variance (mean ± SD)	Z value	P value
Total number of eggs hatched	Fixed
	Intercept	2.782 ± 0.881	3.158	0.002
	Standing at nest	0.053 ± 0.054	0.977	0.329
	Clutch initiation	− 0.006 ± 0.006	− 1.022	0.307
	Random
	Site	2.45 × 10–10. ± 1.65 × 10–5
Total number of nestlings	Fixed
	Intercept	2.584 ± 0.938	2.755	0.006
	Standing at nest	0.079 ± 0.052	1.52	0.128
	Clutch initiation	− 0.006 ± 0.006	− 0.952	0.341
	Random
	Site	2.30 × 10–10. ± 1.52 × 10–5
Total number of eggs hatched	Fixed
	Intercept	2.758 ± 0.895	3.082	0.002
	Leaving nest	− 0.091 ± 0.043	− 2.12	0.034
	Clutch initiation	− 0.005 ± 0.006	− 0.791	0.429
	Random
	Site	1.05 × 10–10. ± 1.02 × 10–5
Total number of nestlings	Fixed
	Intercept	2.523 ± 0.966	2.612	0.009
	Leaving nest	− 0.067 ± 0.045	− 1.495	0.135
	Clutch initiation	− 0.004 ± 0.006	− 0.686	0.493
	Random
	Site	3.90 × 10–10. ± 1.97 × 10–5

Significant results are indicated in bold. N = 44