Seasonal change in sexual differences in nestling size and survival: a framework to evaluate sex-dependent environmental sensitivity in the wild

Table 2 Parameter estimates and p values of the best models of GLMMs

Parameter	Estimate	SE	df	χ²	p
Nestling body weight	n = 1555
Intercept	11.775	0.869	1	17.01	< 0.001
Hatching date	0.909	0.181	1	24.07	< 0.001
Hatching date^2	− 3.088	0.598	1	25.40	< 0.001
Sex	0.550	0.052	1	108.90	< 0.001
Hatching date^2 * sex	1.871	0.458	1	16.59	< 0.001
Female body weight	0.194	0.059	1	10.83	< 0.001
Nestling tarsus length	n = 1555
Intercept	11.497	1.032	1	24.83	< 0.001
Hatching date^2	− 1.222	0.293	1	17.09	< 0.001
Sex	0.441	0.039	1	125.54	< 0.001
Hatching date^2 * sex	1.009	0.339	1	8.85	0.003
Age	0.204	0.040	1	25.60	< 0.001
Female tarsus length	0.311	0.045	1	43.02	< 0.001
Nestling wing length	n = 1545
Intercept	0.167	3.676	1	< 0.01	0.947
Hatching date^2	− 3.074	2.051	1	2.31	0.129
Sex	0.393	0.195	1	4.07	0.044
Hatching date^2 * sex	5.715	1.732	1	10.85	< 0.001
Age	2.994	0.271	1	91.97	< 0.001
Brood size	0.288	0.102	1	7.93	0.005
Fledgling sex ratio (1 = male, 0 = female)	n = 1491
Intercept	− 0.124	0.082	1	2.32	0.128
Hatching date^2	1.901	0.775	1	6.08	0.014
Hatching date	− 0.337	0.224	1	2.28	0.132

ISSN: 2053-7166