Bees in winter

So the bees are still alive! I checked them today, and they're still buzzing. It's still real cold for them, so I didn't open them all the way up, just enough to determine that some are still alive. They've still got a good two months to go, I think, before things will start to bloom, so they're not out of the woods yet. I thought about trying to feed them sugar water, but the hive seemed still heavy with honey, and I don't really know what I'm doing with feeding them. So I decided to leave well enough alone. They have mites, bad. I need to do something about that once it warms up.

You can see above my attempts to keep them warm this winter. An old down comforter, some eggcrate foam, and lots of hay. It looks silly, but so far so good!