I had a hen get a horrible wound in february or march, hens picked her a hole below her vent the size of the palm of my hand, it was huge, and her insides were comming out, I just cleaned her in betadaine wash, put some salve on it and kept her under a heat light with food and water close by i kept thinking she will die for sure, there is no way, but you know she kept on living, she grew a hard scab thing over the wound, I did not let her back with the group. She became my sweetie! Henny Penny. She followed me, would look into my backdoor looking for me, just freindly as can be, and my children let her back with the hens............just a few weeks ago. I did not know they did, and she did not survive the brutal attack. The hens picked the scab, pulled out everything, and of course we found her dead. I was crushed! Chickens are really good healers, so hang in there. btw, I never gave any antibiotics, and my hen started laying about 1mos after injury, amazing.