My three hives in NorCal made it thru the winter, though one barely so. The weak looked like it was a goner in Feb as it had no brood and only a couple frames of bees, so in mid February I added a frame of brood and bees from a stronger hive. I just checked it and it's doing OK but not great, with only a couple frames with brood (capped and uncapped) that covers maybe a third of the frame. My other two hives are booming.
I'm wondering if this queen is simply not making the grade - is it too early to make this conclusion? Last year she did fine.
I am splitting another hive and presume I'll have queen cells from that soon so I could squish her and put a cell into the hive.