Had a great 1 year old hive going, lots of brood, bees, pollen honey, rockin'. That was two weeks ago. Today, no brood, no larva, no eggs. everything else is there and the bees are a little more aggressive. I did notice several supercedure cells being built but they were empty. Re-Queen? divide up the empty foundation to some newer hives? or try to give them a comb of brood and let them figure it out?