My 7mo BA hen has had a very full crop for the last three days or so. She isn't acting terribly different, the crop just looks uncomfortable to me. She is eating and drinking as normal. I felt the crop and it's semi hard, but I can feel all the grit and oyster shell in there. I put out a bowl full of the grit/shell to free feed from and I think that's all she ate. Any suggestions? I don't want to express her crop if it's shells and grit -it might hurt. Thank you for your help!