Migration distance affects how closely Eurasian wigeons follow spring phenology during migration

Table 2 Below we detail the estimates with 95% confidence intervals and model statistic for the fixed effects included in the model for wigeon arrival timing relative to the \(TGS_{\mathrm{onset}}\) using \(\Delta {\text{arrival}}_{\mathrm{d}}\)

	Estimate	95% CI	z-value
Intercept (Lithuania)	0.06	− 0.37 to 0.49	0.27
Intercept (Netherlands)	0.52	0.17 to 0.87	2.91
Deviation from \(TGS_{\mathrm{onset}}\)	− 0.30	− 0.35 to − 0.25	− 12.20
Maximum longitude	− 0.48	− 0.71 to − 0.24	− 3.96
Max. longitude: distance traveled (Lithuania)	− 0.17	− 0.33 to − 0.01	− 2.08
Max. longitude: distance traveled (Netherlands)	− 0.26	− 0.34 to − 0.19	− 6.76

The fixed effects contributed to a marginal \(R^2=0.42\). The response and independent model terms were scaled and centered, and the model was fitted using 208 arrival events for 28 wigeons and 3 years. More details on the conditional model, including the random effect terms and the correlation structure can be found in Additional file 1: Table S2

ISSN: 2051-3933