Not sure about your rooster, we always had a rake by the run door, but if he doesn't calm down within a week after the new hens coming in I would get rid of him, its not worth having an aggressive rooster, you only need one at the end of the day.
As for the suspects, I think they are hens, possibly just a bit older than the others
As for the suspects, I think they are hens, possibly just a bit older than the others