Received wisdom (always a worrying phrase) suggests that cast swarms are headed by a virgin. So far this year i have picked up 6, either in bait hives or as a result of a call-out. all now have laying Qs My most recent was on Saturday evening. It was very small, about the size of an orange, and only really covered one frame, and thinly at that. Anyhow, popped them into a poly nuc, with a couple of pints of syrup to give them a chance. Just checked on them and eggs present! It surely couldn't have been a virgin queen, could it?