How squirrels winter

“For the winter, the squirrel makes small stocks of acorns, nuts, cones, dragging them into hollows or burying them among the roots, and also dries mushrooms by hanging them on branches. In winter, the animal occupies empty bird dwellings. The number of such nests in one squirrel can reach 15, its own she can change her place of residence every two or three days. Thus, on cold evenings, from 3 to 6 squirrels can winter in one nest. This is safer and warmer. " - / entry of a naturalist photographer from Siberia - Vlad /