Sad news today as we lost our hive. Im trying to figure out what happened, but all the bees were dead on the bottom board. They had plenty of stores throughout the hive, no brood what so ever in the hive.
There were a few small groups of bees on some of the frames in the upper boxes, heads in the cells. I did not find the queen, but guess if present she was in the mass of bees on the bottom board.
We had treated the hive for mites back in August with Apivar and thought we had gotten the mites under control. They were alive as recently as two weeks ago, we did have a cold snap between the time I last checked them.