One of my hives swarmed in later April. After about five weeks, I still saw no brood. I added a frame with eggs from another hive. After a week, they still had not started making a new queen. I did not see any evidence of a laying worker. I put in another frame of eggs and checked in four days, but no queen cell. I inspected the hive carefully and found the new swarm queen who was not laying. It had been almost seven weeks after they swarmed, so I assumed she had ovary problems and was not going to lay. I killed her and left he body in the hive and added another frame of eggs. After four days, I checked and found they started to make a new queen cell from the eggs. I checked again one week later assuming the queen cell would be capped, but the queen cell was gone. I added another frame of eggs yesterday, so I do know yet if they are going to make a new queen or not yet from that frame. I did not find another queen in the hive nor any evidence of a laying worker this time either. Has anyone ever had them start a queen cell and then tear it down? If they do not make a new queen from this frame of eggs, does that tell me there is a another non-laying queen running around in there or what?