I have been treating my little Cochin hen for a crop problem first her crop was a little smaller than a ping ball it was soft not hard and she had no smell coming for her beak. I started out using the cream Clotrimazone syringe 3X a day [Instructions from {Two Crows} finally her crop emptied but I am now treating her with acidified Copper. Since we were thinking it was yeast and the Copper would finish it off. Now her crop is empty for 2 days but she is barely eating. She is inside since it is very cold out and I brought her sister in yesterday to keep her company, this is when I realized how light she is compared to her sister. It is probably because she hasn't been eating much I have been syringing baby bird food today just to put something in her but she eats mealworms. Two Crows thinks there may be something else going on with her since she just isn't bouching back . I have antibiotics if this is my next course of action.