Aside from a few stubborn beech leaves, the trees now stand bare and unadorned. Some plants and ferns with tougher leaves will manage to endure the winter under the snow. Frogs and salamanders dig into the ground to survive the cold. For the most part, mammals big and small are still active: at times their tracks can be seen in the snow. A few valiant birds, like the black-capped chickadee and the white-breasted nuthatch, also stay with us all winter long.