I bought 5 frame nucs that were made up the 13th of April. I direct released queens on the 16th when weather allowed. On the twentieth when I went looking for queens in these seven nucs, I only found eggs in three of them! I found capped queen cells in the one I am now talking about. Today the 1st of May I found eggs in that nuc. Laid in a good pattern, not a lot but eggs. Is this matematically possible? Now the other 'missing' queens finally started laying. I can't imagine a queen hanging fire that long before finally starting to lay. I know I have several days before I see if I have a fertile female laying. These are not laying worker eggs and don't appear to be a drone layer either. Any ideas? I wonder if I had a swarm cell on one of the nuc frames and the queen cell I saw was all but emerged when I saw her. Interesting to see if it works out.