Supersedure Queen Cells. Notice how they are larger that the rest of the cells in the comb.
Here is a picture of some Swarm Queen cells on the bottom of a frame in spring.
This is a sign that the bees are going to swarm if I don't get them split or more room made in their current hive.
Another picture of a package of spring bees. The Queen is in her cage in the center of that cluster.
Can you find the Queen?
Hint - She is in the center of the picture and is darker and longer than the others.