Great weather here today in the SF Bay area. I went out to the coast to check 3 hives that have overwintered successfully thus far. All Carniolans with 4-5 frames of solid brood (mediums) with a dappling of the first round of drone brood for the year. I thought, "Well, let's see what's in here." I gave a good shake to clear off the bees and then opened up a few cells. Mites. In every single drone cell I opened. The pupae were still white with no purple eyes, but I definitely saw multiple mites in every cell. I'm doing a bottom board survey over the next three days to analyze the mite drop to see where I am at. Along with using formic acid, I am implementing a drone brood removal system this year. I suppose that will be helpful in managing these little bastards?... As a beek, it's frustrating. I know I've got them, but I don't often see them. This was just a cold but important reminder that the hive isn't what it used to be. Get ready for battle people, spring is around the corner!