A couple of days ago I started to notice our one hen was not acting right. First sign I noticed was her droppings and they would run down/get stuck on her feathers behind her butt. Then yesterday some of my chickens started to gang up on her and started pecking at her. She just stood there and didn't move, so I did take out the hen and separated her to monitor if she was actually sick. Today I noticed her becoming a little more lethargic, she still is a little alert but her feathers are all puffed and her comb is pale and shriveled. She is eating treats, I've been giving her some mealworms, watermelon and blackberries. I noticed she's not drinking as much water and she hasn't laid since the fall (which is pretty normal for her to go winter without laying). These are what her droppings have been looking like, more of the liquid side. I'm not sure what to do! We do still have her separated from the flock.