I've got 88 12 week old chicks, yes I said 88, and today when I went out to the coop/run I noticed that one of them wasn't moving around the way the others were. When I picked it up it appeared to me that she had probably been in that same spot for at least a day or more. Her crop was empty and she seems weak. She's capable of walking and does not appear to have any injuries impairing her from walking, however she will only walk a short distance before sitting down and again seems very weak. I've only had the opportunity to observe her droppings once and it was very wet with a light fairly bright green color. I was able to get some food in her by mixing some with water into a mash putting it in her mouth. I've isolated her from the others. Does anyone have any suggestions?