Whatever it is, worming her with a broad spectrum wormer, like fenbendazole (Safeguard), won't hurt her. Now might be a good time to get a baseline weight so you can see if she's getting worse or better as time goes on. When mine aren't feeling well, one of the first things I do is weigh them on a digital kitchen scale.Susan's crop seems fine, and her rear end is white and brown and sometimes so wet it is drippy. I am thinking more and more that this is worms. What sort of started ringing an alarm in my head was the fact that she would be found relaxing on the roost in the coop while the others were out free ranging.