Thursday night when we put the flock to bed, one 8 month old Golden Comet would not go to roost. She got into a nest box and just stood there. I knew she was not right, by morning she had died. No marks on her, no nasal discharge, nothing. Tonight, a three year old red sex link is doing the same thing. Her crop is empty, she will not eat or drink, I know she will be dead by morning. Again, no wounds, eyes are clear, no nasal discharge. She let me pick her up, and I've never been able to handler her like this before. What do I look for? We have 8 other hens ranging in age from 8 months to three years. All in the same barn, no change of food, no new hens have been added since the 8 month olds came this summer. I'm in Ohio, it's been cold here, but they have a heated water supply, and we have been keeping the wood stove going to take the chill off in the barn. Any suggestions will be greatly appreciated.