No previous sign of sickness. I am taking her in for a necropsy, very curious why this happened. Now I am worried about my other 12 hens! Also, could the eggs be affected? I just gave some away yesterday and I am worried about that. No outward sign of illness. I looked in the coop and there she was, kinda like she fell off her roost, laying down and her neck feathers were fluffy. So sad, she was a beautifull, sweet silver lace wyandotte.