I have never had a bird survive an attack so I am not quite sure what to do. We have been fighting an opossum in the coop eating the eggs for the last number of days. Chickens have been stressed by the opossum in the nesting boxes. I came home tonight to feathers everywhere in the chicken pen, in large quantities. Huge chunks torn out together, plus a blanket of loose feathers. Can't imagine it was the opossum. I assumed that the hen had been taken, but she was in the coop with the others. They aren't very tame so I can't get near her at this point. She ate the fermented feed I brought out and I tried to get a look at her neck area. I couldn't get close enough to pry, but it felt like I was looking into a body cavity. I have a feeling that there are hunks of flesh gone down to the bone, with maybe part of her neck gone. She was walking around. This is way beyond some antibiotic ointment. Should I let the wound be, or should I pour Povidone-iodine solution in (it was frozen in the barn so not sure how potent it will be). Even without being able to see yet, I think that if I poured the iodine on, it would actually go into her body cavity as this isn't a surface wound. Or, I could let it be. My tendency is to leave her in with the other birds in order to not additionally stress her out, but should I remove her and maybe bring her into the warm house? Thanks.