In the last month we have had 2 of our girls die, I don't know what is causing it. They have been just fine, then we are finding them laying down dead. I don't know what is going on. They don't get out to free range every day since we have a bad coyote problem. They always have plenty of water and high quality layer feed. I'm at a loss as to what it could be. They are only a year old.