my buff orpington hen has always liked to sit in her nesting box more than my other two hens. But in the last several days it has been hard to get her to come out at all. Yesterday my father lifted her out I didn't see if she ate or drank while she was out of the hen house, she quickly went back to her nesting box. This morning I went to check on her and when I lifted her from her box saw that all her feathers are missing on her brest and down to her legs, with a few still in but broken down to about a quarter inch. When I put her down she just sat as if on an egg and wouldn't move. I've had a recomendation to worm? Ring any bells? Help!