I went to check on the Nuc that I put together yesterday. I left them queenless for about 20 hours, then put the queen box on top of the frames around 10 AM yesterday. when I looked in today they had eaten through the candy. There was a small cluster of bees on the screen of the queen box and bees going in and out of the queen box. It was hard to tell through the bees which refused to be brushed off the cage, but I don't think the queen is in there anymore. The bees were otherwise fairly calm. Does this sound like they accepted the queen or balled her? It's that cluster of bees on the cage that had me worried. Also noticed some robbers nosing around, some going in to the hive apparently unchallenged. Almost no foraging bees, just a couple with pollen coming back in. Is it normal for a new nuc to not defend the hive? I reduced the entrance to 1/2" wide. If the robbing continues, I will put on one of Indee's robber screens.