Alright so i have this Red Sex Link hen and i got her when she was 18 months old along with 23 others. After about four months i noticed her comb was not as deep of a red as her sisters. I had been getting 23/24 eggs a day for the most part. Over the last 8 months or so she has become very fat. She always use to have poop clogged up on her rear feathers and now theres no feathers there and just bare skin. She is the only chicken that wont go outside. When im cleaning the coop i will put her outside and when it gets dark she doesnt come in with the rest of the girl and i put her in by hand. At night she doesnt roost with the rest and just stays on the ground. Lately with the cold weather nobody is goig outside which i think is leading to boredem because she is starting to get her feathers picked out by the rest, any suggestions? I need help. I would prefer not to have to cage her seperatly