I am a newbie chicken keeper. Mine are five months old. I have a buff orp rooster, who has seemed fine until this evening. When I went to visit them this afternoon, the back half of the rooster's comb was purple and limp. I found posts about purple comb, and the consensus seemed to be to try duramycin, so I went and got that, isolated the roo and started the treatment. It was only after all of that that I really took notice of the limpness and realized that no one had mentioned limpness in their posts. Is there anything else I should try? I would hate to lose him. I honestly didn't mean to fall in love with my chickens, but I couldn't help myself.