My chickens throat was throbbing and she was puffy. Oh and she had foam in her mouth. We gave her tylenol and her puffiness went away but her throat still throbbed. After a day i checked her mouth again. It had no foam but it had weird yellow stuff in it. Is it canker? Heres a few pics: Ignore the dirty tank lol If it is canker what is the best recommended medicine for her and where can i get it?