For the past couple of days I have noticed that my 2 yr old Brahma hen has had a warm, swollen abdomen. At first I thought she was egg bound, but I believe she has been laying eggs since I still get the same amount I normally get in the same spread out places in the coop. I felt the belly of my other brahma today and it felt normal. None of my other 10 chickens have this problem. In addition to her abdomen problem , her feathers are patchy, maybe being picked at but I have not seen any of the others go at her. On her stomach there is also a lack of feathers. I have no clue what’s wrong with her, but she doesn’t seem to be getting better or worse.