I think I got to the BOTTOM of the red butt/bleeding problem. One of my chickens ( whose butt is fine.....no surprise there) has been caught pecking chicken butts. She does not seem to do it from aggression but curious and just pokes at their butts.. I am re-thinking that perhaps she should be the one who gets caged so the others can heal. I have been separating the two that have been bleeding currently. Please help....I hate seeing my hens hurt like this.