I have a beautiful 1 1/2 year old Buff Orpington roo with serious issues which are now affecting his health. He is so mean to people and hens that he has to live in a 5x 12 ft bachelor pen. He crows when something upsets him ( like losing site of his girls, or somebody flushing the toilet- yes, he can hear it). He has developed stress diarrhea for the second time in a couple of months. Any suggestions for calming him down?