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I'm sorry that your question wasn't answered in a timely manner. We don't have many avian vets on this site. Which type of bird is he, please?
Thank you. May I have an update on your turkey, please? Turkey coryza (Bordetella avium) and avian mycoplasmosis (infectious sinusitis of turkeys) are the most common of the infections causing those symptoms. Terramycin is reasonable but no antibiotics alleviate symptoms and these birds become carriers of the infectious agent. If you haven't seen a good response to Terramycin, you can see how tylosin (Tylan-50 in your local feed store) affects him when dosed at 20-30 mg/lb daily for 5-7 days. It's injected into his breast muscle.
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