I called the chickens to give them treats and noticed my 1.5 yr old Buttercup "running" over to get food on slow motion and looking like she was drunk. She acts "normal", only everything is in slow motion. You know how their heads bob when they walk? hers is a slow motion bob. She forages with the others just fine, but her wings are droopy, her bottom is clean (no diarrhea that I can tell), the comb does look pale and a bit limp. She eats and drinks just fine, and ran away when I went to pick her up, but she was so slow that I caught her. Her crop was full, but not not hard. Forgot to check this morning to see if it emptied. When I picked her up I was surprised to see that she is skin, bones and feathers! But none of my chickens are fat. They all seem skinny to me compared to the stuff you get at the grocery store, but the buttercup was beyond skinny. They eat layer crumbles. I have no idea if she has been laying or not. I felt her tummy, and it's all bones, nothing feels swollen, though she did feel squishy and like she has sand inside her. I don't think there's an egg in there either. I thought maybe mites had been sucking her dry, so I put Iprenex on her, but I didn't see mites or lice on her or the other chickens. She does not make any noise, no clucks, nothing, except when I picked her up, but it was so quiet, I could barely hear her. Then I noticed my mottled houdan is silent too, but she's "weaning" her baby chicks and seems to not make noise when they're around, so I thought maybe it was to not encourage them, because she acts just fine when apart from her babies. None of the other chickens have any similar symptoms. What could it be and what can I do? I bought some electrolytes and will put her in a cage by herself tonight when I get home. Thanks.