New to chicken raising, and a little confused about what is happening with one of our hens. We have 5 Buff Orpington hens that are about 6 months old. We noticed that one of our girls started what looks like brooding about 2 weeks ago. She wouldn't come out of the nesting box in the morning and had to be moved out of the box to come eat. She was moving around fine until about 3 days ago. Now she won't even hardly stand up. Her neck feathers stay ruffled all the time and her right foot toes stay really close together. We have tried moving her to different locations around the run to see if she would move. She got down off a bale of straw we had her on and she will shuffle herself around, but will not stand or walk for anything. I read about the vitamin B deficiency and we have had her on that for the last couple of days. We have now removed her from the rest of the girls in case she has something contagious. Are we too worried about this? Is this what a really broody Buff acts like? Thanks for any help!!