We just noticed today that one of our 18-month old black barred rocks is very ill! She was acting weird today, seemed almost confused. Very thin all of the sudden, even her legs. And her legs seem red/blotchy. Proximal to her vent is very red with broken and missing feathers. Seems her belly is distended, too. We found her sleeping in her nesting box. I checked her for impacted egg and external mites..found nothing. She is so thin!! and very tired. Also saw watery diarrhea that looks like old paint that has separated...no blood, just whitish/yellowish and watery. We separated her from the rest of the girls and are hoping for the best. Today is Saturday, and we won't be able to get to a vet until Monday. Anybody know what might be wrong? We don't expect her to last much longer.