I got up this morning and went to feed/water and check on my chickens to find one of my hens dead! Last night (only about 12 hours earlier) when I went out to them everyone appeared to be doing well. I always spend a lot of time with them just looking and watching when I feed and gather eggs and I didn't observe anything out the ordinary last night. She was a 27 week old Delaware. No visible signs of a fight, no blood, no scratches, no missing feathers. Crop was not impacted. No poop on the feathers surrounding the vent area. Nothing, just dead. She was laying under the roosts and it almost looked like sometime during the night she simply dropped dead and fell down to the ground (only about 3 feet). I have never had anything like this happen before. In fact I have never lost a bird before, not even a chick! I am a little upset to say the least. I knew that my luck couldn't hold out for ever, but I would at least like to know what happened to her so I can make sure that it doesn't happen to any others. I know it's a long shot, but any ideas???