This isn't an emegency, I don't think, but I've got a hen with some issues that I need suggestions about. She's a two year old silver-laced wyondotte. She seems perfectly happy and still eats, peck and runs around the yard like normal. However, she's been missing the feathers on her bottom around her vent for some time. At first it was a little alarming to see, but I made sure she wasn't injured or bleeding and decided to leave her alone. I've had other chickens do what I'd call spot molts. She hasn't shown any indication of growing her feathers back though and when I let them all out today I noticed she had the leathery shell of a soft egg hanging from her vent and she looked a tiny bit prolapsed. I caught her despite the protests of the rooster and gently pulled the shell out. I knew I had someone laying soft eggs but this was the first time I was ever able to figure out who. I give oyster shell and none of the others have problems so she either has an absorbtion problem or just won't eat the oyster shell. My question is whether I should be worried about her or not. I thought about bringing her in and washing her bottom so I could take a closer look, but she seemed fine and was struggling to get back to her share of the scratch grains. It doesn't look like the other hens pick at her naked bottom. Should I be worried about the lack of feathers, the soft eggs and/or the prolapse appearance? Thanks in advance for any suggestions.