Hi, I recently purchased a hen at a bird swap. She got very sick. The first thing I noticed was that she wouldn't open her eyes and she seemed very quiet and would lie down and not move. The seller told me she was about 4-5 months and she seems okay weight. She is always very sleepy and puts her head down and sleeps. I only got her yesterday, and today she got worse. She now has a large swollen lump on her butt. (I attached an image) Sometimes she'll stand up straight weirdly and it looks like she's trying to poop? I've only had her for two days so I don't know how long this has been happening. I have her isolated from my other chickens. She has been eating and drinking normally without any problem. Her poop has been mostly diarrhea but since the lump developed it has been mostly pee. I have so far given her medicated strong eye drops in her eyes and her nose. I had a chicken before who was very sick and it seemed to help her. I would only like to treat her myself. The bedding she is in now is a box with cedar chips in a small cage. I hope this is enough information to help. I hope she can make it through.