Today, the park's rangers continue that tradition, keeping watch over the park from the back of a dog sled during snow-covered months. Visit the kennels or look for the sled dogs on the trail during your visit. Unobscured by city lights, the stars and aurora curtains brighten the dark winter night sky. Green is the most common color of Northern Lights. There is plenty of winter action, including twenty-six species of birds and many kinds of mammalian tracks in the snow.
Bears hibernate during the winter.
They have been spotted as late as November and as early as March. Moose try to stay out of deep snow to ward off predators. Be careful on hard packed trails-even though people make them, moose are possessive of these safe and easy passages. Caribou move to their wintering grounds, to the north and northwest of the park road, early in the winter and journey back to calving grounds, inside the park, in early spring. Packs of Wolves may be sighted as they search for prey weakened by the demands of the harsh winter.