Fig 4. Effect of different changes in model parameters on the R_t ratio.

Effect of A) fraction of bites on competent birds (f); B) bird competence (p); C) bird susceptibility to infection (p_MB); and D) duration of infectious period in birds (ν_B) on R₀ in each sub-region and year of simulation (solid lines). Dotted lines represent the mean value of R₀. The grey boxplot provided for each panel visualises the posterior distribution of the parameter investigated. The posterior distribution of parameters is visualised using the same y axis to compare the shown distributions.