Here is what's a mystery to me:
My bees are been pulling out drones from the hive and dropping them in front, which sometimes resulted in what looked like violent struggles on the ground. By now there is a pile of at least 150 bodies, which all look healthy to me. Some have managed to crawl away, so there are actually many more dead ones. This has been going on for at least two weeks! One week ago a swarm left the hive, and on the day after that I opened up to see what was going on. Plenty of capped brood on most of the frames, some of them drone cells, one full frame of honey and more honey on the brood frames. Things look o.k. to me. But there are some varroa, which I have seen on a wax paper left under the sbb. The bees have also pulled out two (that I saw) wax moth larvae.
This colony has stayed in one deep super all last year, even though they had an empty deep super on top.
Could somebody please tell me what is going with them getting rid of the drones? Is there a problem I am not aware of? I am quite worried. Thanks.