Please bear with me if you can. Explaining all of this may take a few minutes. Today my husband and I went out to remove some frames of honey from one of our hives and afterward something happened that makes me believe I am seeing the hive getting ready to swarm. When we went out this morning there were quite a few bees already at the lower and upper entrances, but no more than what I might see when the hive is bearding. Yesterday it rained and the humidity levels were a little elevated and another hive of similar population was doing about the same. This hive consisted of in order from bottom to top: two deep brood boxes, a queen excluder, an upper entrance, a deep honey super and a screened ventilated inner cover with roof on top. The upper super was completely filled and capped with honey with the exception of one frame that was still partially uncapped. That frame was left in place and the rest of the frames were pulled. In their place we added back drawn comb from which we had extracted honey about a week ago. In addition, we pulled a few capped frames of honey from the middle (brood) box and replaced them with older drawn comb. Upon opening this hive and removing the capped frames my husband noticed that they had built comb between the bottom of the frames past the space where the upper entrance was and through the excluder, attaching it to what was below. He had noticed this to be a problem on the last hive we pulled honey from and concluded that the upper entrance was in the wrong spot, allowing too much space. Knowing this, he moved the entrance up to the top and it now sits under the screened inner cover. The problem I am seeing is that it appears that a huge majority of the bees are now outside of the hive and there is a large ball of bees clinging to the upper entrance. The whole front of the bottom brood box and part of the side of the hive is covered in bees. The mass at the top looks like a swarm woould, and the bees are clustered on top of one another in a large ball. When I went back a few minutes ago and looked under the roof, the whole bottom side of the screened inner cover was a solid layer of bees which could not be seen through. I assume the super is now filled itself with bees. Could it just be that they are finding all the empty drawn out comb and cleaning it up? My fear is that the hive is wanting to swarm. Having so many bees on the exterior concerns me since I know there is plenty of room now on the inside. There was capped brood in the middle box where the queen has been laying. Is it possible the queen somehow got dropped from a frame and has crawled back up to the upper entrance and gone inside. What would be your advice on handling the hive. Right now I don't think I can do much with the upper super so full. Should a let it sort things out on its own, or do I stand a chance of losing half the hive in a swarm?