Please help BYC. I think I have a sick chicken but don't know what's wrong. She's just sitting on the roost trying to suck into herself. She's fluffed up like crazy with her head all pulled in like I've not seen before. She wouldn't hop down for their most favorite "scratch snack", but did get down a few minutes ago for a small drink. She doesn't move when I touch her (very out of character). I am going to try and attach a photo. Any ideas please? I'm fairly new to the chicken business, coming up on two years.