My chicken has recently had a bottom that has been bleeding, and today she seems to have costipation. She is puffed up like a ball and not being very active at all, she just stands there moving every so often with no motivation. Normally when I go to the shed to get some corn and they are all trying to jump in the bucket, but today she didn't even look up, and didn't touch the food when I placed it in front of her. Me and my mum washed her bottom and removed lumps of dried poo from inside her vent, and that seemed to cheer her up abit because she is now eating. Overall though, she is still very subdued. What should I do?