Last week when I went to rob one of my hives, I found that the 2 honey supers were about half full of drone brood and had lots of drones. I assumed something had happened to the queen and I had laying workers. I took what honey I could and combined the supers into one. I could tell there weren't many bees below the excluder, but I didn't go into the deeps. Today was the first chance I had to get back to it. I found sealed drone brood above, but no larva. To my surprise, I found that below the excluder was a queen with eggs, larva and a little capped brood filling about half of two frames. There are probably 15,000 bees in the hive and about a fourth of them are drones. I know the hive swarmed in late April. It had come through winter very strong and I was too late with any swarm prevention.
What has been going on? Why would there be laying workers and a queen?