Cold winter day and fast sudden spring coming?

At 9 AM I went for a (short) walk from the southwestern gate of the Woods. The Woods were quiet and I did not stay long. I saw 4-6 white-tail deer up walking or trotting north over the dune into the Woods and wondered, 'How do they do it?' I was outfitted with warm wool hat, thick wool gloves and warm scarf, my best winter down coat, thick socks and solid shoes and was conscious of my vulnerability to cold. How do they stay out here, sleep out here, find enough to eat, find places to escape the wind etc. ? The same for a flock of 70 starlings in the rough grass lawn outside the SW corner of the Woods. How do the birds survive days/ times like these?

I walked over the southern dune to the old beaver dam and observed that water was still flowing at a reasonable rate. Despite little precip in the past month (0.63 inches) the SW Woods remain flooded. The 3-5 inch deep pools and shallower channels mostly have a layer of weak ice with a little open water.
 Although it feels like the world has been locked down by bitter cold arctic air, it is not really that cold, 22F;  but a north wind makes this a wind chill of 7 F,  pretty cold for March here. Often first week of March there are daffodils in Norman. This year they have all emerged and have their green leaves fully extended, even have their flowers partly formed and ready; but still closed protected in the bud. This cold wave will last a few more days, then it should jump 30+ degrees to mid 50's and stay that way for a week or more. That should lead to a sudden burst of spring flowers.. starting later than usual and going faster than usual. Should be interesting to watch how the trees in the Woods respond.