The diet of weasel (Mustela nivalis) collected in agricultural
mosaic plain regions of Hugary was studied using the analysis of
stomach and rectum contents (n = 155). As a percentage relative
frequency of occurrence, diets consisted of 85% small rodents
(mainly Microtus spp.), 10% birds (mainly Passeriformes), and
lizard, wasp, blood and plant matter. Consumption of small
mammals increased from winter to summer and autumn. No predation
on lagomorphs was found. Standardized trophic niche breadth was
very narrow (mean, Bsta = 0.07). The food consisted of
characteristically small (15-50 g) and terrestrial prey