Our chickens are right around 4 1/2- 5 months old, and I'm pretty sure we have two roosters. However, my barred Plymouth Rock rooster has been pecking at hens' tails and hurting them. He's not mean towards me or my family. I have to spray the hens almost every day with a healing spray, but he still pecks at their tails and makes them bleed. I want my hens happy. Is there anything I can do to try to get him to break the habit?