Is it common for chickens to sometimes lay a soft shelled egg? I have 10 hens that are 10 months old and I've gotten 2 eggs now that are probably from on of my partridge rock hens that is soft shelled, as in, it indents from pressure on it but doesn't break. I feed laying mash that has oyster shell mixed in plus I have oyster shell in a free choice feeder and I occasionally throw out scrambled eggs with the egg shell mixed in. Will they occasionally lay an egg like this anyway? One of my PRs looks like she's near the bottom of the pecking order. Will stress do this? Any suggestions?