Are diurnal time-budgets and activity patterns density-dependent in the Shelduck (Tadorna tadorna) wintering in Algeria? An analysis across multiple temporal scales

Table 3 Summaries of generalized linear models (GLM) testing the effects of Shelduck’s population size on weekly variations of diurnal activities of the Shelduck wintering in Sabkha Djendli, northeastern Algeria

Diurnal activity	Variable	Value	Std. error	t-value	p-value	Sig.
Feeding	Intercept	58.417	2.053	28.46	< 0.001	***
Feeding	Density	0.001	0.001	0.86	0.405	^ns
Sleeping	Intercept	12.662	1.504	8.42	< 0.001	***
Sleeping	Density	0.000	0.001	− 0.51	0.620	^ns
Preening	Intercept	7.244	1.430	5.06	< 0.001	***
Preening	Density	0.002	0.001	2.25	0.040	*
Swimming	Intercept	9.265	1.163	7.97	< 0.001	***
Swimming	Density	− 0.002	0.001	− 2.20	0.044	*
Loafing	Intercept	6.017	0.692	8.70	< 0.001	***
Loafing	Density	0.000	0.000	− 0.26	0.797	^ns
Courtship	Intercept	1.255	0.507	2.48	0.026	*
Courtship	Density	0.000	0.000	− 0.09	0.933	^ns
Antagonism	Intercept	1.587	0.245	6.48	< 0.001	***
Antagonism	Density	0.000	0.000	− 1.01	0.327	^ns
Flying	Intercept	3.101	0.493	6.29	< 0.001	***
Flying	Density	0.001	0.000	1.36	0.193	^ns

ISSN: 2053-7166