Hi...I'm new and I'm sorry to start out with drama, but I don't know what to do. I went out to collect eggs today and one of my hens was laying on the ground of the run dead! I have 16 BO that are a little over 2 years old. I am in their cage every day to clean and feed everyone. No one has been acting lethargic or strange in anyway. I haven't changed food or snacks in about a year and a half. They do get out once a day to free range, but they aren't out very long and I don't see anything that is poisonous in the yard. It is hot here in Florida...96...but they have had two summers here already, and they are almost completely in the shade. They haven't been panting or holding their wings up. Everyone is fat and happy, so I don't think they have worms. No parasites that I can see. Legs and feet are smooth, no scaling. I looked for evidence of a predator, but I don't see any signs of anything. The only feathers she was missing were the ones the rooster routinely rips out during mating. Everyone's poo looks fine, except I noticed one blob that had a little green in it. Is that abnormal?? I am going to bleach out all the waters and dump all the food, clean the feeders, and put new food in. Can you think of anything else I can do to prevent anymore deaths? Thank you for any suggestions ahead of time!