I have been getting some soft shells from my girls so 2 days ago I added free choice Oyster shells, well today we got 1 brown egg, 1 Ducks egg. and 2 soft/no shell eggs! I am still expecting 1 more egg from Nugget, she usually lays around 10. Any ideas what else I could do? IS it just a new layer thing? only 2 out of 7 pullets are laying consistently.. I am going to try mixing the oyster shell in with the food, will that harm the rooster at all?