Hello. I have an old hen who is laying funky eggs. I'm not sure of her age, but i rescued her at an adult age and she's been through 2 molts since then. Her eggs have gone from almost every day (at rescue time) with thin shells, to no eggs at all, to laying broken eggs, to laying almost every day again, but with thin shells. This has happened over the last 2 years. My other birds have very hard shells, so i am blaming the shells on age only. Her new daily eggs have meat spots, which i recognize as "normal." i feed those to my dog. Lately though, they've had grains present. This worries me. Can her feed enter her reproductive tract somehow? Is there possibly something that can cause her feed to end up inside her eggs?