A few weeks ago I lost my four month old female.Alsterlier hen. She was fine one day, lethargic the next and dead by that night. The rooster that came with her is still healthy as a horse, and none of my other chickens have gotten sick since. They are protected from rain and are on medicated food until they start laying, and I have a whole separate pen for my laying hens. I decided to get two more females from the same man, who indignantly seems to think that I'm the reason she died, since he says he's never lost a hen. He agreed to sell me two more but he wasn't happy about it. Has anyone else experienced a chicken suddenly dying? This is the first time I've ever had this happen.