we had the same issue her in FL with the winter, coldest in 21 or so years. I knew of several feral hives going into winter that are now dead, pretty uncommon here. I was hoping to catch some swarms from those ferals to replace my winter losses which is right about 20%. On the up-side we have caught 5 swarms in the past few weeks so thats a start. Sorry to hear about the losses we are experiencing them ourselves.
A government large enough to provide everything you need is strong enough to take everything you have. T. Jefferson