I have a 8 month old Black Australorp hen who until a few days ago was the picture of health. I noticed two days ago she had a little bit of poop stuck to her butt, but she was eating and acting perfectly normal. Today, she is noticeably lethargic, her comb is pale and appears to have shrunk some. She was also opening her mouth to breath when I brought here in although that has since stopped. She is in a coop with her flock of 6 other hens and a roo. Everyone else appears fine. I have brought her inside and she is currently sleeping in a crate. I gave her about 1/4 cup of yogurt with some flax seed oil which she ate about half of. I have also given her a few dropperfuls of h20 with some vitamins and honey. Her poop is pretty runny, green, white and watery. I have done the whole egg check routine to rule that out and did not find any stuck eggs or swollen abdomen. Vent looks fine. I also gave her a warm bath to clean off her bottom and blew it dry. Her usual diet consists of organic layer feed, oats occasionally, yogurt 2x a week and she does free range although none of my flock has been wanting to go out given the chance lately due to the cold weather. We live in upstate NY. I have been researching on here and am at a loss to whats wrong with her. Any advice would be greatly appreciated
