When I cleaned my coop Friday my RIR was isolated from the flock and it appeared as if she was molting. She wouldn't eat the meal worms I left for them either. Yesterday she seemed better and I thought nothing of her. This morning I went out and she was dead. Evidently she died sometime yesterday and when I closed the coop it was dark so I didn't see her curled up in a corner. Her feathers looked fluffier than usual Friday and yesterday. I have 5 other hens and get up to 9 eggs a day so I don't even know if she's been laying. Any thoughts?