Fig. 2
From: Environmental drivers of autumn migration departure decisions in midcontinental mallards
Mean predicted selection index ± 1 standard error (shaded area) as a function of covariate values in the top model (winter conditions). All other covariates were held at mean values to calculate predictions. The selection index is proportional to an alternative’s selection probability given this set of covariate values. A air temperature; B depth of snow cover; C accumulated days of frost; D accumulated days of snow ≥ 2.54 cm deep; E presence of ice cover ≥ 1 cm thick. Note different y-axis ranges