I have 4 buff orpingtions and one black sex link (hens) Seems like the the BO decided to pick on baby girl and now she has a huge bare patch on her back. It happened just a few hours before they went in to settle down for the night. We are in the midst of Iowa and 0 weather with snow but they insist on going out and all still lay daily. There isnt any dirt at the moment to really speak of but they do have roomto roam. Help?!?!