Gus, when you say DMV are you talking about th virus that causes deformed wing? I'm not familiar with that acronym. My drones are thick outside the hive as yours are in your pictures. I have sent in a batch to be tested in Beltsville, so hopefully I'll hear something soon. Could be some kind of pest problem, in which case I'll hope that the hive can wait until July, when I can treat with formic or oxalic acid, in the lull between spring and fall flows.
I also wondered if it could be "cultural " and not pest-caused. The hive was so packed with honey when I checked today - they're filling and even capping comb as it's being built! There was a lot more drone laying this spring than I've seen before, so maybe they're kicking out the drones, or even hauling them out of the comb before the drones are ready to emerge, so that the cells can be used for nectar storage. That's pure speculation. Or it could be hygienic behavior. I just extracted and gave the hive a box and a half of empty comb to work with, so hopefully that will relieve the pressure somewhat.