I posted this in a different section of the forum and it was suggested that I try over here. My chicken is about 2 years old and for a while now, she always seems to be sitting down. She gets up to eat and still does have a little wander but she just sits down a lot. We have another chicken who seems absolutely fine. She is laying eggs, although they are very poor quality. We have been giving oyster shells. We've always given them this. She's still eating but she does have this red area near her back legs. Any idea what this could be? She also seems to be limping a bit. Could it all be related?