Table 1 (a) Model selection of the effects of treatments (Ad libitum-Control, Ad libitum-Imidacloprid, Restricted-Control, Restricted-Imidacloprid), Sex, Brood size, Pair order) on scaled body condition residuals (SMI \(_{residuals}\)) from day 8 to day 30. (b) Parameter estimates (slopes [\(\beta\)] with standard error [SE], degrees of freedom [df], t-value and P-value) for top ranked model. Factor level references: Treatment = Ad libitum-Control, Period = First half-period. (N observations = 2937; from 129 individuals of 35 pairs used as random factors).

a) Model		\(N _{p}\)	\(\bigtriangleup _{AIC _{c}}\)	\(\omega _{i}\)
SMI \(_{residuals}\)
	1. TreatmentPeriod + TreatmentDay + Brood size	16	0.00	0.43
	2. TreatmentPeriod + TreatmentDay + Brood size + Pair order	17	0.40	0.35
	3. TreatmentPeriod + TreatmentDay + Brood size + Pair order + Sex	18	1.30	0.22
	4. Null	5	91.36	0.00

b) SMI \(_{residuals}\)	\(\beta\)	\(SE\)	df	t-value	P-value
(Intercept)	0.43	0.29	42.14	1.50	n.s.
Ad libitum-Imidacloprid	0.41	0.28	26.61	1.47	n.s.
Restricted-Control	−0.98	0.26	26.46	−3.81	< 0.001***
Restricted-Imidacloprid	0.88	0.30	25.05	2.91	< 0.01**
Period	0.69	0.27	18.25	2.54	< 0.05*
Day	0.00	0.00	2809	0.42	n.s.
Brood size	−0.15	0.04	38.49	−3.35	< 0.01**
Ad libitum-Imidacloprid:Period	−0.87	0.37	19.95	−2.34	< 0.05*
Restricted-Control:Period	−0.49	0.37	18.21	−1.30	n.s.
Restricted-Imidacloprid:Period	−1.36	0.39	19.32	−3.52	< 0.01**
Ad libitum-Imidacloprid:Day	0.01	0.00	2809	2.09	< 0.05*
Restricted-Control:Day	0.04	0.00	2809	7.73	< 0.001***
Restricted-Imidacloprid:Day	0.00	0.00	2809	−0.18	n.s.
Random effects
Individual standard deviation	0.54
Pair standard deviation	0.22
Residual standard deviation	0.65

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