Hi, I have a Wyandotte rooster, a Wyandotte pullet, and 3 Australorp pullets. None of the pullets are laying yet. I noticed last week the Wyandotte had been pecked on the top of the head and there was blood on her and the rooster. I assumed the rooster was just getting into his sexual maturity and pecked her while trying to do his thing. This morning I noticed the rooster had the same issue of being pecked on the head. The Australorps have not had any injuries. Any ideas on why? They only go into the coop at night and they are free range during the day. The coop is a decent size for the number of chickens with plenty of roost space and boxes.