TABLE 1.

Model estimates of the linear mixed effect model investigating factors affecting age at departure.

Variable	Estimate	SE	95% CrI
Intercept	79.47	1.83	75.74–83.30
Feeding treatment [fed]	−3.52	1.76	−6.85–−0.28
Hatching date	−2.14	0.97	−4.00–−0.18
Hatching rank [2nd–4th hatched]	1.49	1.70	−1.80–5.03
Hatching rank [singleton]	0.24	1.96	−3.68–4.25
Elevation	0.39	1.00	−1.52–2.56
Sex [Male]	3.26	1.47	0.50–6.17
Distance to roosting site	−2.90	1.11	−5.14–−0.78
Year [2017]	4.57	1.87	0.90–8.27
Territory density	−4.99	1.75	−8.57–−1.55
Year [2017] * Territory density	4.44	1.79	0.94–8.03
Sex [Male] * Territory density	3.38	1.48	0.48–6.34

Note: Brood ID was included as random effect (n = 158 individuals from 105 broods).

Significant effects are highlighted in bold.

Random effect variance [95% credible interval]: Brood 3.20 [2.68, 3.76], LRT 0.13, p = .23.