Hi All. I'm sure this has been discussed many times. I'm just very concerned for my other girls and want to do what I can to keep them safe. I have 3 Black Sexlinks about 10 months old. They have been giving me about 16 to 18 eggs a week since they were 6 months. The last three days Elizabeth has been spending time in the nest box. I thought she might be broody. Ask some chicken friends who agreed that might be it. She was always out the door in the AM to eat and I saw nothing wrong with her movements or posture. 9PM last night I found her under the coop all fluffed up. When I picked her up she acted as usual, flapping and trying to get loose until I got a proper hold of her. She went right into the coop. This morning I found her dead. I haven't seen any diarrhea or bloody poop. Could this be Coccidiosis? What do I do to keep the other two safe? I also have 37 wk chicks that I was planning to start transitioning to the outside coop. Please help if you can.