Table 2.

Estimated coefficients from the best-performing GLMs explaining variation in Red-backed shrike response probability during the breeding and migration periods. Significant predictors include playback species and clutch initiation date

Period	Parameters	Estimate	SE	t-test	p
Breeding period	Intercept	0.576	0.186	3.09	< 0.01
	Laying date	−0.019	0.006	−3.36	< 0.01
	Accipiter nisus	0.480	0.143	3.36	< 0.01
	Cuculus canorus	0.683	0.141	4.86	< 0.001
Migration	Intercept	−2.197	0.577	−3.81	< 0.001
	Accipiter nisus	2.110	0.597	3.54	< 0.001
	Cuculus canorus	0.832	0.646	1.29	0.197