can someone please help me diagnose my roo's problem. Some of them have small brownish blisters on their combs and wattles, which turn into scabs after a few days. Only seems to be males affected at this stage. They are about 6 mths, old and various breeds. One of the worst affected is my Mille Fleur bantam. One has already died. I need to find out what it is so I can try to fix it. HELP PLEASE!!!!!!! Michelle.