I'm new to beekeeping this year, and I have a hive that I just can't figure out. I installed a package of bees on April 27th. They completely drew out one medium super but would not move up to the second box and then swarmed on June 11th. After that, I moved some drawn frames with nectar/pollen up to second box and that seemed to draw them up. They had two mediums almost completely drawn out so I added a third. That was about a month ago and they just weren't doing anything in it, but I figured it was due to the dearth and they just didn't have much to bring in. Now, on September 22nd they swarmed again! The last time I went completely through this hive was a couple weeks ago and I didn't see any queen cells, so they must have started building them right after I went through the last time. So answer me this:
1) Why is this particular hive to darn stubborn to move up into an empty medium so they don't get too crowded???
2) Why would they swarm this late in the year when winter is right around the corner???
3) What could I have done to prevent this?
These bees are crazy. Twice they swarmed because they apparently didn't know which way was up... Now I'm afraid they have grown too small to over winter...only about 15 medium frames worth of bees...should I combine them with another hive?