Fixed effects model output of the general linear model to explain the effect of supplementary feeding on April API of pink-footed geese <i>Anser brachyrhynchus</i>.

* Significant effects on α-level 0.05 Presented estimates are coefficients from a model with “Year” and “Bird ID” as random effects and “Day of month”, “Sex”, “Supplementary feeding”, “Sex * Supplementary feeding” and “Year * Supplementary feeding” as fixed effects. The supplementary feeding variable distinguishes between birds with API assessments inside and outside areas with supplementary feeding, and N indicates the number of geese included in the analysis. Day of month and Year was fitted as continuous variables (covariates).