I have 3 hens, a buff orpington and a brama. They are 1 1/2 years old. I decided to get a rooster, a 4 month old silver laced wyandotte. My hens are pecking him, not to the point of bleeding. They just chase him around the pen. He isn't crowing or trying to establish dominance. This has went on for 5 days. Do I just need to seperate them? Any ideas would be greatly appreciated.