I have a RIR, about 19 mths old, who is having some issues. For a few months she has been laying thin shelled eggs. I added oyster shell, and it was a little better, but still thinner than her flock mates. Her last three eggs have been yolkless eggs. Shown with a normal for size comparison. Shown with a normal egg for size comparison. Her's are the top two in this bottom pic, and the middle one has swirly appearance in the shell. I have also noticed her having a milky color to her poos. I have read that high urates can cause this. She does not seem sick, is eating and drinking normally. Her weight is steady, she is overweight, but has always been. Her comb is nice and red, and she was dewormed about two months ago, precautionary, did not have obvious worms. I did notice some blood in her eggs before the yolkless eggs started. Is this just normal aging in a hen? She isn't that old, but this is her second laying season. I have read that yolkless eggs can be a sign of a hen reaching the end of her laying cycle. Any thoughts? The milky poo isn't solid milky, kind of a thin white color. I did check the poo chart, similar to the high nitrate poo seen in an older hen, but not that thick or white.