my almost seven month old banty cochin is going through molt now. today i saw her on the ground, in the leaves, as if she was on a nest. but she just sat there. later on, she looked as if she was suffering, in her run, not even bothering to peck at my 13 week old chick who was running around. I picked her up, and her crop was as hard as a rock!!! And I mean HARD! What could this be from? Something she ate? Will it go away?