Today is day 4 of one of my chicks acting off, though the first day I didn't notice it. She has been lethargic, standing as much as possible, hunched over and puffed up, eating and drinking a little, not into normal chick activities, watery poops. Today I started Cocci treatment. I just did a hands on check of her and noticed her crop feels really puffy and full, but I don't feel the marble like feel...it feels like it is full of air or something. The other chicks have a marble or two in a more empty feeling than not crop...but the sick one feels like a pillow or airbag is in her crop. Is this a sign of Cocci...or is there some other reason for this puffy crop? She does seem a little better after drinking the treated water, started around 1pm today, but the crop is concerning me. Thanks.