A while back I posted here about a sick hen. Everybody suggested mites. So I treated for that, and everything seemed to be going well. The hen looked better and started laying eggs again. This morning before I left for work I saw this hen (Austra-white) jump into the nest box. When I got home this afternoon she was out in the run hiding under a chair and looking very lethargic. She wouldn't move at all. She usually freaks out and runs like crazy when I try to pick her up, but she just stood there today. I picked her up and began to look her over. I inspected the vent first. It was fun, but on the feathers below the vent were clumps of very dark almost black droppings. As I titled her forward a little to get a better look, a clear slightly yellow liquid poured out of her mouth. I set her in a pen by herself with some water, food, and yogurt. She's had one drink of water, but is not interested in the food or yogurt. Any ideas what is going on here? Is it too late for my poor girl? She is now just sitting down next to the water. She isn't drinking much. But dark greenish brown liquid poop is oozing out of her vent. Please help. If there is nothing I can do I need to know so I can end her suffering.