2 hives were nucs now after being moved to hives been 5 1/2 weeks all the brood hatched and queens both dead. Makes no sense I took 2 swarm cells from another hive installed them. They just hatched and they were killed to. Lots of nurse bees and plenty of drones. My ? is. Should I combine these to hives and add more brood and add a new queen on Wednesday when my queens I have ordered come in? Or should I try to add frame of eggs? These bees aren't acting aggressive or strange in anyway lots of pollin and honey is building.