You should NEVER stitch up the wound on a chicken. It will likely become infected.
Once I had a hen tore up by a neighbor's dog. I refused to let an avian vet stitch her up based on what experienced poultry people had told me. Instead, I had liquid Baytril as an antibiotic that was mixed in the water (which is why I needed a vet). I cleaned the wound each day with hydrogen peroxide and put antibiotic ointment on it. It healed right up. She was laying again in a few days. The wound was horrible. Some of my Buckeyes have healed up on their own from terrible wounds that I would not see until finding the scar later. One particular hen had what used to be a baseball size scar under her wing. Apparently something had grabbed her and tore a hole in her. She had hid the wound so as not to attract attention.
Another time, I had an opossum grab a Buckeye hen on the roost by the head. Her head was so cut up and swollen I thought she had lost her eyes. That was four years ago and I still have the old hen. I only kept her isolated and cleaned her head off everyday. She ate and drank water when i showed her where it was in the small cage I put her in.
Once I had a hen tore up by a neighbor's dog. I refused to let an avian vet stitch her up based on what experienced poultry people had told me. Instead, I had liquid Baytril as an antibiotic that was mixed in the water (which is why I needed a vet). I cleaned the wound each day with hydrogen peroxide and put antibiotic ointment on it. It healed right up. She was laying again in a few days. The wound was horrible. Some of my Buckeyes have healed up on their own from terrible wounds that I would not see until finding the scar later. One particular hen had what used to be a baseball size scar under her wing. Apparently something had grabbed her and tore a hole in her. She had hid the wound so as not to attract attention.
Another time, I had an opossum grab a Buckeye hen on the roost by the head. Her head was so cut up and swollen I thought she had lost her eyes. That was four years ago and I still have the old hen. I only kept her isolated and cleaned her head off everyday. She ate and drank water when i showed her where it was in the small cage I put her in.