Table 1. Parameter values.

	Single-species functional response	Multi-species functional response
agrouse	0.00164 (0.000614–0.00243)	0.000673 (0.000484, 0.00119)
avole	-	3.78 (2.20, 5.45)
apipit	-	1.904 (0.941, 3.16)
tgrouse	0.325 (0.0275–0.919)	2.74 (2.04, 3.46)
tvole	-	2.32 (0.960, 3.40)
tpipit	-	1.676 (1.39, 2.09)
mgrouse	1.09 (1.00–1.31)	2.51 (2.33, 2.69)
mvole	-	1.14 (1.00, 1.44)
mpipit	-	1.18 (1.02, 1.41)

Mean parameter estimates for the single species functional response (middle column of table) and multi-species functional response (RHS column) fitted to the hen-harrier data set. The parameters are a, the encounter parameter which relates prey density to attack rate, t, the handling time (where 1/t gives the maximum consumption rate), and m, the shape parameter (values of m>>>1 indicate that switching occurs). 95% Bayesian credible intervals are shown in brackets. Subscripts indicate the prey species for which each parameter was estimated.