I got into one of my strong hives and noticed that they had swarmed immediately. On further inspection, I saw queen cells. I said a few choice words and noted that I did not need any more supers. I took a couple of frames out with queen cells on them to make nucs. Two days later I went to put new frames in. When I opened the hive it was FULL of bees. Also, where I took the frames out, the bees had already filled the spot with drawn comb. So, my question is - is it possible that a swarm joined the remaining bees that were in the hive? I just can't figure this out.