I made a post a while ago about a hen with a nearly purple comb and drooling. Over break, she seemed to be getting better, now she has a pure white comb that is dribbling blood, she cant stand, and she weighs almost nothing. She is refusing to eat or drink, but it isn't sour crop. Her whole face is pale, and her eyes are constantly fluttering shut. She is still drooling. She has a vet appointment today, but we might have to put her down. Any ideas on what this is?? This is my first experience with a sick chicken. Please reply ASAP, I'm quite worried.