In the Russian Far East, apparently the most important prey types were reported as Manchurian hares ("Lepus mandshuricus"), a close cousin and of the same size as the Japanese hare, and hazel grouse ("Tetrastes bonasia"), while most of the remainder of the diet consisted of a mixture of smallish mammals like (moles, hedgehogs and flying squirrels) and largish forest birds (woodpeckers, pheasants and owls).