Need some advice please. A week ago one of my hives swarmed and having landed in my neighbors yard it create an uncomfortable situation. Rescued it and relocated the swarm. Then a week later (yesterday) this same hive started to swarm again. It landed only 10 feet away in one of my trees, and before I could do anything about it, they all went back to the hive. However, it was apparent I still had a problem.
Went into the brood boxes this am and although not entirely full, the top brood box did have about 10 swarm cells and one or two supercedure cells. I removed most of the swarm cells, caught the queen (assumed to be virgin) and put here into a nuc box with five frames of brood, honey, nectar and open drawn out foundation. I have located the nuc in the shade with the top of the box cracked (but not wide enough for bees to enter/exit) and with a 2.5" screened ventilation hole.
My question is how long I need to keep these bees sequestered....or do I? Of course I am concerned that they have enough ventilation; but I'm confident they have enough to eat. If I open the lid enough for all but the queen to exit, will they just fly back to the mother hive located about 50' distance?
Is this just an unusual year this year (in Central coast of California?). I have never had such an issue with swarming. On the "up" side, I have not seen any evidence of varroa this year!
Thanks for your thoughts.