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The best treatment for an area like that would be to use some Triple Antibiotic ointment. The Brand is Neosporin, but you want the type without pain killer. This would be non toxic and also afford a good way for the area to heal and protect the area from bacteria. The tresadem has an antifungal and steroid in it, so I would be very hesitant to use it on a bird, especially if the area can be reached with the break and tongue and ingest it. Joan