I went to check on my hive today (I have only one). Several bees were coming and going (it is 44 degrees and bright sun today), and I used a stethoscope to listen and can hear the roar of bees inside. All seems well. Except, there is honey on the bottom board (the white one below the screen) in the back left corner, about 3 inches in diameter. At least, I assume it is honey. It smells, looks, and feels like honey. I didn't taste it. I pulled the board out, and there was another circle about 2 inches diameter in the upper left corner (basically, all is on the left side of the board). It isn't a TON of honey, but looks like maybe 1/8th of a cup dumped out. I only noticed it because it was in the back corner and was noticeable to me as I was back there listening to the bees.
What could cause this? Is it honey? I have an entrance reducer, but I didn't put it on until November. My bees were fairly active up until then, as we have had a warm fall. There have been several times that we have had warm days since putting on the reducer and the bees have flown in an out. I am assuming that if there was a mouse in there and the bees are active (as they have been on the warm days), they would have broke cluster and they would have killed a mouse? Can a mouse be actively living there when the bees aren't clustered?
I am assuming that this means comb is damaged from something, correct? Could this be uncapped honey/nectar dripping because of the warm sun? Any advice? I really don't want to break apart the hive this time of year.
For what it's worth, I sniffed around and didn't notice any odd smells, and listened to the bottom box with my stethoscope and didn't hear any unusual sounds either.