I have a hen who developed chronic canker after a bad bout of dry fowl pox. The canker has never progressed beyond the right side of her mouth, but it's quite large and I'm sure bothersome. She can eat and drink just fine, but can't close her mouth. She has just started on Flagyl. Is it necessary to try to remove the growth by hand or will the Flagyl reduce it? The thing seems quite hard and attached, extending slightly under her tongue. If it should be removed, what is the best way to go about it? I have seen all the threads here on BYC, with pictures, but wasn't sure if some softening agent was used first. There is a pigeon video where someone is prying it off with a wooden gum stick, but it sure if the procedure shown is quite the thing. Voices of experience welcome!