Please help! I got home from work and found 1 of my 9 hens standing in the corner. She wouldn't move, even let me pet her which is very rare for this girl. Eventually she got annoyed with me and rather than going out with her sisters she very slowly went back into the coop and is currently standing in the corner. She's been there for 45 minutes, won't move. She's acting very sluggish and I've noticed her butt is very disturbed. Still has all her feathers but it's very much covered in what looks like diarrhea underneath. Any advice would be great! I don't want to lose her.