I have a Roo who is almost 4 months old, he won't put weight on one of his legs so We separated him so he wouldn't get picked on and could heal. Today I checked on him and his leg is greenish at the joint and his eyes are crusted shut. I've heard the skin turns green when they bruise but with his eyes I'm wondering if he has an infection. His head and eyes are not swollen but his joint is a little. Is there anything I can give him or any ideas what it might be? I'm afraid he could infect the flock.