She is walking like a penguin, her butt is a bit red. Unfortunately I believe she will pass to chicken heaven soon. She has been slightly sick for several months (maybe 8-10 even) and is just getting worse now. She has had a soft and more pinkish than red comb. She has had liquid poo. Not eating as much, but still eating. My chickens are fed an organic diet. No others seem to be affected. No antibiotics though. Bought my chicks at local country feed store. They are 2 1/2 years old now. Does anything sound familiar to anyone? Thanks for listening.