Two days ago my Ameraucana hen ("Missy") laid an egg without a shell, after sitting in the nesting box for a very long time. I don't know if the egg had a membrane around it when laid because when I saw it it was squashed around Missy's vent and in the nesting box. She seemed to behave normally for the rest of the day, but went to her roost early. Yesterday she didn't come down from her roost for several hours, sat on the ground in the run for a short time, then spent most of the rest of the day in a nesting box. I offered her water and some bread, but she wasn't interested. As far as I know, she stayed in the nesting box all night. This morning she came down into the run but looks droopy. She is standing, but puffed up somewhat with her tail feathers down, closing her eyes from time to time. She took a piece of bread from my hand but I don't think she ate it. I've seen her standing near the waterer but haven't seen her drink. The other two chickens seem unaffected. I've only had the chickens for about a month, and am at a loss about what to do. Does anyone have any suggestions? Thanks to the poster below for the suggestions. Missy has been laying for a little more than a year. On average, she produces an egg two days out of every three, and was laying normally prior to this problem. She free-ranges for most of the day, but also eats pellets. Part of the backyard where the hens free-range has very acidic soil, which might interfere with the availability of calcium in the greenery that Missy eats in that area, but her problem seems to be bigger than the one egg that she laid without a shell.