I'm posting here because over the last year or so I've had a number of Red Star chickens die in the night. There's no blood or feathers around so I'm sure a predator didn't kill them, and they seem healthy enough so I don't suspect an illness - though I can't be certain of that because I don't know anything about it. I feed them cracked corn, plenty of water, and they eat plenty of natural things like bugs and stuff around the yard and they seem to enjoy that quite a bit. I'm not really sure of the age of any of them as I've bought them from a lady in the area, though I don't believe they're too old. I close the small barn door up at night to keep common predators out (we do have a lot of coyotes in our area) - and this morning when I went to let them out one of them was dead on the floor. This is the 4th one I've lost this way over the course of a year. They're pets really, we usually only keep 3-4 at a time; now I'm down to 2. Are there any signs I should be looking for? Is there some illness or parasite I can look for? How long should a chicken like this live anyway? What other information should I provide here? And thanks for your help.