I have a hen that likes to fight with the rooster. She got hurt, she is pretty thin and her feathers are sparse. About a week or so ago, we put her in a run by herself while she heals. Yesterday, I noticed she has a swollen cheek. At first I thought she was eating because she looked like a chipmunk gathering nuts for the winter. I checked her again today and it is still swollen. I took some pix but don't see a place to upload. Any ideas?