Anyone have any ideas? I have a 13 week old pullet whom I purchased 2 weeks ago. Her two mates are still doing fine. She has very runny, watery poop with green chunks (they have been free ranging on grass), she's puffed up, lethargic and her comb and wattles are grayish. I've wormed her, put electrolytes in the water, provided her with a little yogurt and she has unlimited access to medicated chick feed. Any other suggestions? Thanks in advance! Ps...no mites or lice found although I could dust her. Also she is eating and drinking, a little.