I had four hens around 8 months old. Last Wednesday night something go into the yard and attacked one, and left another plucked in several places. She is recovering fine, but I did notice what looked like fowl pox on her comb and wattle, and the red around her ears went whitish. I assumed it was injury..... Until today. Now there is a black spot on another healthy girl's comb. Could it be pox brought on after the attack when she was weakened, and is now spreading? What can I do if my unvaccinated girls do have it?