Interesting. Judging from the varroa drops it's the last hive I would have guessed wouldn't make it. When do you think your hive will start brood raising in earnest up there, particularly with the mild winter?I looked under the top box on Hive One and see there are no bees down there, so I'm judging by the small size of the cluster in the top box that this hive is dwindling. It may not make it through the winter.
I previously speculated that hive 3 would have problems, and it does seem to be having some. It's so hard to predict survival on an individual case for me. My hive that had DWV seems to be doing quite well and I was sure it would be dead by now. Maybe that OA vapor really does work.