I started vaping 16 days ago and finished the third vape yesterday. After the first vape i asked this question as i saw drones and the possibility of a DLQ was alluded to then. However, yesterday i looked through the poly for ages and lit the hive from the bottom and couldnt see any drones. Seven seams of bees, packed, no deformed wing, all munching away on fondant. Was encouraged and went to replace the mouseguard. Two fat, bugged eyed drones came out onto the landing board. Another arrived just as i finished. So yes, they do keep drones. Its a first year queen, she laid well all summer and no issues going into winter so i can only imagine they're all good. I have a 14x12 and fed them well before closing up so maybe the abundance of stores and a here to mild winter has allowed them to keep some drones?