Diurnal migration patterns in willow warblers differ between the western and eastern flyways

Table 1 Results of logistic regression models. The longitude at which barrier crossing took place in each season has been abbreviated as “long”

Models and variables	β	Std. Error	Z	Pr(> Chi)
Autumn FDF ~ long AIC: 78.33
Intercept	0.12	0.32	0.38
Long	− 0.11	0.03	− 3.70	0.00002
Spring FDF ~ long AIC: 74.96
Intercept	1.34	0.43	3.12
Long	− 0.06	0.02	-3.43	0.0002
Autumn FDF ~ long + I(long^2) AIC: 80.21
Intercept	0.17	0.34	0.49
Long	− 0.09	0.05	− 1.78	0.00002
I(long^2)	− 0.001	0.003	− 0.35	0.72
Spring FDF ~ long + I(long^2) AIC: 76.78
Intercept	1.45	0.50	2.84
Long	− 0.08	0.06	− 1.28	0.0002
I(long^2)	0.0005	0.001	0.42	0.67
Autumn FDF ~ breeding site departure AIC: 96.71
Intercept	3.92	8.720	0.45
Breeding site departure	− 0.02	0.04	− 0.52	0.60
Spring FDF ~ winter site departure AIC: 88.91
Intercept	0.22	1.40	0.15
Winter site departure	0.0006	0.02	0.03	0.98

ISSN: 2051-3933