When we wanted chickens, I had NO IDEA what coop to get. There were obviously so many choices, plans, prices, and sizes! How is a girl supposed to chose?! Also with baby chicks in the brooder that don't stop growing for coop prep. I will say from experience: DO NOT GET CHICKS BEFORE YOU HAVE...
oh my. I would think there are probably parasites in that moldy goo that covers the grass. I would separate the sick-looking hen and make sure no other chickens peck that grass until it is free from the stuff. I'm not sure if it's the grass making the hen lay funny, but just to make sure I would...