The impacts of Paridae pox on reproductive performance of great tits.

<p>Results of model selection for the effects of parental disease status (PDS), lay date (LD), year, and local breeding density (Density) on measures of reproductive performance in great tits: (a) clutch size (CS), (b) the number of young alive at day 15 (NYoung), (c) the number of young fledged (NFledged), (d) whether any young fledged (FledgedY/N), (e) the number of independent young produced (NIndYoung) and (f) whether parents produced any independent young (IndYoungY/N). Estimates of coefficients of the linear predictors (on the link scale, with standard errors, SE) are shown along with the relevant test statistics (z/t) and their significance (P). Statistics for significant terms (P<0.05, shown in bold) are from the minimal model, other values are at the point at which that factor left the model.