This started last week. We purged her crop, kept her isolated, gave her yogurt, cider vinegar and apple sauce. She was doing much better two day later, still no solid BM. I put her back because she was eating and scratching around. Today she has a full crop again, not eating, just laying in the shade. We tried to give purge her again no avail. Nothing comes out. Gave her olive oil and massaged her crop. It is fluid or soft to the touch. Feels like a water balloon...maybe a little harder. She is getting skinny, should I go to the feed store and get a generic antibiotic? Thank you in advance for your help. Our other chickens are doing well, I would think if there was an illness, they to would be sick. Thinking it might be a blockage past the crop??