While it's beautiful to look at, these cold winter days and nights are undoubtedly a tough time for all our wildlife, so don't forget to give your local creatures a helping hand/paw. A little appropriate food, natural foods, unprocessed, certainly no salt in it, can literally be a life saver. If in doubt google the appropriate food for the species visiting your garden/area. Don't forget some fresh (unfrozen) water.
Frosty fox (click on image for higher resolution view)