I just checked my hive yesterday, May 16, after installing on April 11 (5 weeks ago). Since I'm new at this, I'm not completely sure what I was looking at but it looked like swarm cells. I checked a book later and it appears that I was right. I put a second deep super on yesterday and I'm going back in today to take another look. Hopefully it's just swarm cells and no queen larvae. I hope adding the second super will convince the bees to stay put. It does look like an early swarming season here in Michigan, too. I did read in a book that if one should blow up a hive that is intent on swarming, then they probably won't swarm. John Moote [log in to unmask]