How to Diagnose and Treat Canker Fast!

Описание: I got this bird a few weeks ago off of auction, he didn't seem to have any symptoms just looked a little rough. about 2 weeks ago I noticed he was winded from a flight around the loft and when I looked closer he had black stuff in his mouth so I isolated him, in the 3 days it took me to get his medicine it had already advanced to these big ol cheesy lumps you see here. Im using Ronidazole an antibiotic to treat it for a week.