Specific distributions features of distribution of 9 species of martens in the north of the Lower Volga region have been demostratet. Calcu lated width of the spatial niches for these predators and their degree of overlap. Widespread spacies of martens in this region are the weasel, stoat and badger. Black polecat, pine and stone martens occupy about half of the possible biotopes, but mink and steppe polecat are found only in a limited number of habitats.
