Hi, My hen is a 6 year old BR. She is very thin and was having trouble eating and swallowing food. That is when I looked in her mouth and checked her crop, (which was empty. For the last 2 weeks I have been trying to treat this growth on the bottom of her mouth, under tongue. For the last 5 days, I have treated her with 1 pill a day (250mg) of Metronidazole. And before that 3 days of Penn G injections. I thought it might be canker so that is why I put her on metronidazole because the Penn seemed to have no effect and I had looked at pictures on here of canker and they looked similar to what is in her mouth. Just yesterday, this growth was almost gone, but today it seems to have grown overnite. It is on the right bottom side of her mouth, under and along side of the tongue. I have been tube feeding her Kaytee the last 3 days which is going well. Her crop is working. Her vent looks good but I have a hard time finding her droppings. I have one other hen but her mouth is normal and she is perky. TwoCrows will be posting pics for me of this growth. One pic from the 20th and 2 from today. Has anyone seen this before, what is it and how do I treat it?