A few days ago I rotated one of my hives so that it would be in a better position to receive the sun on the entrance. Since then there have been a lot of bees at the old entrance. I assumed they were just getting adjusted to having their hive rotated. I had placed a stick on the entrance to try to prompt them to re-orientate when I did the rotate. I noticed that the bees that were hanging out at that location (about 200 or so) were very agitated. Today I noticed a bit of fighting and some slightly different colored bees getting attacked. Overall the fighting was really minimal so there might have been a local hive trying to do some robbing but the bees seemed to be fending for themselves rather well. I reduced the entrance a little to give them a hand. By the end of the day today (the same day I reduced the entrance a smidge) I saw a few thousand bees flying around the hive and probably 5-600 or so on the side of the hive where the old entrance was. They weren't fighting so I don't think it was another hive robbing. They seemed to build up on the side of the hive and then a small mass of them would rush into the hive (again no fighting and the bees weren't the color as the earlier robbers so I think they were my bees). I don't think that I reduced it to the point to cause that much congestion, I was rather conservative with my entrance reduction and they still had more than enough space for their usual activity level. Others were simultaneously coming out the other side of the entrance. This was happening in waves where one group would be rushing in and another group would be coming out the other side. Would this many bees flying around the hive be a sign that they are preparing to swarm? Any suggestions on what I should do? Right now I did my best guess and I reduced the entrance down smaller (they only had about 30 minutes left of sun) and as soon as the sun was off the hive the bees went back to a normal level of activity for the hive before they close up for the night. Any suggestions on what I should do tomorrow? Should I be as panicked as I feel???