For about a week one of our hens has grown steadily weaker. She's a 2-1/2 year old RIR-Columbian cross. Here's a list of symptoms: - weak. won't walk. just sits. - lack of appetite, thirst. We're getting her water with a dropper, and (gently) forcing pellets. - comb getting darker - labored breathing (I think) - poop appears to be undigested pellets -- like you'd soaked laying pellets in water - smells terrible No mucous or goo around beak/eyes. Any ideas? Thanks!