Table 3.

Model-averaged coefficients (±s.e) for the hazard function for age at recruitment (h(a), Cox proportional hazard model) and relative number of chicks fledged (F_r, ordinary least-squares regression) for sets of best models (ΔAIC < 2). Levels of statistical significance as in table 1. Relative performances of the models for h(a) and F_r are presented in tables 2 and 4, respectively. T_N denotes experimental treatment during the chick stage; G_m, daily growth rate (g d⁻¹) during the chick stage; α, age at recruitment; T_B, experimental treatment at recruitment; P_m, peak mass (g) during the chick stage.

explanatory variable	h(a)	Fr
intercept		−1.85 (0.90)*
sex (M)	0.31 (0.25)	−0.153 (0.18)^
TN (unfed)		1.11 (0.63)*
rank B	0.34 (0.21)
rank S	−0.13 (0.29)
TB (unfed)	−0.59 (0.19)**	0.34 (0.21)
Gm	−0.03 (0.05)	0.06 (0.03)^
α		0.21 (0.07)**
TN (unfed) : α		−0.16 (0.09)^
TN (unfed) : TB (unfed)		−0.67 (0.29)*
Pm		−0.15 (0.18)*