You're speaking with Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
I'm sorry that your question wasn't answered in a timely manner. We don't have many avian vets on this site. To answer you directly, we don't apply dressings because our patients too often ingest what we apply to their detriment. When addressing self-mutilation such as you've described, we use neck braces and Elizabethan collars while providing analgesia through the use of nonsteroidal antiinflammatory drugs (NSAIDS) and antibiotic coverage is provided because these chronically excoriated areas are often secondarily infected. Consultation with an avian vet (please see here: www.theparrotsocietyuk.org/veterinaryadvice/avian-vets) is strongly recommended to have restraint devices properly fit on Coco and to have those prescription only drugs prescribed.
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