My one year old polish tophat has been laying soft shell eggs for about 2 weeks give or take. At first I thought she wasn't laying until I found the membrane as the other hens had picked at it. She was listless in june and not laying. Then she perked back up a few days after june and started laying. Now I have soft shell or is it shell-less eggs? from her and she became listless again. She is a hatchery bird if that matters? lays my largest eggs in the coop. I feed them 5 grain with layer feed and oyster shells. They are in an enclose run, no mites on them and have sprayed as a precaution the coop and all hens. Any ideas what else it could be? everyone else is fine. She eats and drinks.
