I just went out to check on the hens, and found one dead in the hen house. She is about 1 year old, regular Rhode Island Red. She was dead next to the feeder. Her legs and body were stiff, but her neck was still floppy. Should I have her checked somewhere for something? I have never had one die for no obvious reason. The rest of the flock looks healthy, as did she. There is a broody Muskovy Duck in there, sitting on her eggs, and a little Frizzle Banty with one chick, but they would be no match for the hen, so I'm sure they didn't do anything. Besides, she has no signs of any attack.