My chicken about a week ago got sour crop and seemed to get better but turned for the worst. She has always been a bigger chicken but has lost severe weight and has lost her appetite. She has runny greenish yellow diarrhea and stands like a penguin. she is very weak and constantly closes her eyes. I checked to see if she was egg bound but that doesn't seem to be the case. she also shakes slightly. please help I'm out of options and after I lost my beloved pet duck to a dog my pet chicken Kentucky has became my friend and now i'm afraid to lose her too. she is also little over than four years old.