Table 2.

Generalized mixed model selection. Response variable is the fate of the individual snake replica balanced by times that transect line was in field (catching effort)

Model	df	AIC	χ2	sig. χ2	Z	sig. Z
1 ∼A*B+A*ML+A*MI+A*H+A*C+1|Y+1|L	14	645.88
2∼MI+A*B+ A*ML+A*H+A*C+1|Y+1|L	13	643.95	0.078	0.78	−0.271	0.78
3∼MI+ML+A*B+A*H+A*C+1|Y+1|L	12	642.12	0.166	0.68	0.405	0.69
4∼MI+ML+C+A*B+A*H+1|Y+1|L	11	641.41	1.293	0.26	−1.118	0.26
5∼MI+ML+C+H+A*B+1|Y+1|L	10	641.33	1.925	0.17	1.398	0.16
6 ∼MI+ML+C+A*B+1|Y+1|L	9	639.34	0.003	0.96	0.057	0.95
7∼MI+C+A*B+1|Y+1|L	8	637.35	0.009	0.92	−0.151	0.88
8∼C+A*B+1|Y+1|L	7	636.95	1.606	0.21	−1.519	0.13
9∼A*B+1|Y+1|L	6	637.60	2.651	0.10	1.64	0.10

Abbreviations of the explanatory variables are: A, coloration of snake replica (aposematic or not); B, abundance of common buzzard; ML, abundance of red kite; MI, black kite; H, booted eagle; C, short-toed eagle; Y, year; L, location. Asterisk indicates interaction term of the variables and + indicates main effects. If interaction term is indicated also main effect is included. χ² value and significance level of χ² indicates change from higher model. Z value and its significance are for significance of the removed term in the higher model. Model selection was based on significance of the terms in the model.