A beekeeping colleague showed me a drawn super frame last week that was completely capped. The only thing was that the frame was completely empty. All the other frames in the super were exactly the same. He had put the wet super back on top of the crown board after extraction. The bees had cleaned every last drop of honey out of the frames and then proceeded to cap all of the frames. I know that bees are unpredictable and don’t read the books, but has anyone experienced this before?