I have four pekin 2 male 2 female. Everyone gets along just fine and were raised together. Yesterday one of my my drakes was chasing the other drake around almost constant. Grabbing the back of his neck etc. I figured he was showing dominance and he would stop and it seemed towards the end of the day he had stopped. Well this morning he’s at it again and he pinned my one to the ground and stayed on top of him so I grabbed the aggressive one and held him for a minute put him down and he went back to it. My other drake was standing there literally trembling. I have now separated the aggressive one by himself in a fenced area where he can still see everyone but he is just pacing trying to get out. I’m not quite sure what to do...will this stop?