We kept our chickens and guineas in the coop one day this week due to the thick fog. When I checked on them in the afternoon, one of the chickens was dead. Everyone else was fine. I didn't have any idea that she was ill. I don't know for sure if she was one of the older hens that I got from a friend in the Spring or if she was one of the peeps that we raised in the Spring......but she was rigored and without any apparent injury at all. Is this the way they die with old age? It looked like she just fell over and that was it.