I saw a worker pushing a drone up the hive front and around to side. She appeared to be nipping his tail; he finally buzzed off. I have been harassing them too and culling drone brood and looking for mites. So far not a one off about 1/4 of both sides of this drone frame. Have to do some further tests but it is looking like maybe not having to treat for varroa the end of summer. This is my 35$ super capping scratcher! The chickens got a feast.