Melatonin reduces migratory restlessness in Sylvia warblers during autumnal migration

Table 1 Parametric components (estimated parameters, standard errors, t -values and P -values) of the generalized additive model analysis on factors affecting Zugunruhe

	Estimate	Std. error	t value	P
(Intercept)	-1.456	0.312	-4.669	<0.001
Species	-0.519	0.281	-1.850	0.068
Melatonin treatment	-0.596	0.253	-2.355	0.021
Food treatment	-0.448	0.257	-1.746	0.085
Fat 1	0
Fat 2	1.279	0.370	3.459	<0.001
Fat 3	1.455	0.386	3.771	0.006
Fat 4	1.272	0.450	2.827	0.021

The model was fitted by using a quasi-Poisson distribution with log-link function and a Generalized Cross-Validation criterion (GCV) as model optimizer. In the model a fat score of 1 served as the baseline level to which the other fat score levels were compared to.
adjusted R² = 0.168 (expl. deviance = 22.5%), GCV score = 0.478, N = 88.

ISSN: 1742-9994