My Neighbors best hive swarmed this morning unexpectedly. They werent that crowded, had about 6 frames mostly built out in the second brood box. I wouldnt think that overcrowding was the problem. Im guessing supersedure. Maybe the original queen wasnt performing and they ran her off? With a bunch of bees. If thats the case, a virgin queen will take how long to get things straight, assuming she makes it back from her mating flight? Any thoughts?