Color plumage polymorphism and predator mimicry in brood parasites

Table 2 Predictors of great reed warbler responses to dummy presentations at their nests

Minimal adequate model	df	F	p	Estimate (S.E.)
Intercept				17.23 (0.88)
Dummy type (dove)^a	4,220.20	45.85	< 0.0001	gray cuckoo: 9.63 (1.21)
				kestrel: 5.50 (1.44)
				rufous cuckoo: 3.82 (1.26)
				sparrowhawk: −6.61 (1.45)
First attacking sex (male)^a	2,161.50	7.85	0.0006	female: −1.69 (0.97)
				both: 3.59 (1.04)
Experimental date – linear	1,73.06	10.71	0.002	−0.32 (0.10)
Host arrival direction (focal)^a	2,173.80	4.23	0.02	central: −2.72 (0.93)
				opposite: 1.33 (1.04)
Removed predictors
Final clutch size	1, 76.30	0.26	0.61	−0.70 (1.36)
Experimental date – quadratic	1, 54.42	2.10	0.15	0.01 (0.01)

Responses were measured as the number of contact attacks per first minute of the experiment (see Methods). Results of the general linear mixed models (GLMM).
^a Reference levels of categorical variables are given in brackets.

ISSN: 1742-9994