Thursday morning went out to the coop and found one of my cornish girls dead. It was shocking since in the evening when we put everyone to bed no one appeared sick or injured. Then when I found her she was still pretty loose so I am thinking it happened in the early morning. She was perfect. Not a scratch, no unusual swelling and as I said every one was perfectly fine at bed time. I think maybe she injured herself, broke her neck if something spooked her during the night... does this happen? I found her under the roost. Can chickens break their necks fairly easily?