One of my ISA Browns was bitten by my dog and has a golf ball flap of skin torn on her back. I rinsed it good with warm water, used hydrogen peroxide and then gooped Neosporin and folded the flap over. I have her separated in a 3' x 3' tote. All looks good but the wound has a green puss around it. Is this a infection or just a part of the healing process. Also I tried to let her play with the rest of the flock and two started pecking at her head and chasing her. I've been reading on how to introduce a new hen but didn't think that a hen returning after only 4 days would be treated like this. Also all of my girls are missing a few feathers from their back. Ive caught a few of them pecking at each other, is this normal? Are they bored? I have 6 hens, A leghorn, A silver and golden Wyandotte, 2 ISA Browns and a Americana. My run is 6' x 12' and the coop is 6' x 4'. I have perches, hay bails, and treats. These Girls are spoiled. Always clucking, just not sure what to do. Any help would be appreciated.