I found one of my hens dead on the coop floor this morning. Beside her was a shelless egg. She was wormed with Valbazen on Sunday. She was fine last night. I did a necropsy and didnt find an egg or eggshell. She did have a small, what i assume, prolapse. No blood, but i did notice some yellowish/greenish discharge. I also checked intestines and didnt see any large blockage of dead worms. He beak was clean, no drainage. What could have happened to her? Any ideas?