I had a nice ripe capped queen cell in a queenless nuc that was due to emerge yesterday. I went to look today to see if it had emerged, expecting to see an open and empty QC, and there was no QC there at all anymore, just a smooth dimple in the comb as though nothing had ever been there! I had marked the frame and the side, and there were no remnants on other frames either. I know where it was, and now it's GONE.
So my question is- do the bees sometimes break down and remove the empty QC the day after the virgin emerges, as part of their housekeeping maybe? Kind of weird!