Ok 2 weeks ago a cockeral just died. He was fine and then he was very lethargic/limping hiding from the rest of the flock then he just died. I thought maybe injuries from fighting, but I didn't give it too much thougt. Now I have a 18 month old hen that is acting lethargic and nervous, hiding from me. When she went to roost tonight her face was gray, her eyes and comb were droopy, and she had watery diarhea. The poo was clear with white specks. They are in a coop/ pen. My flock is around 30 birds, plus a coupple dozen babies. I have been giving them layer pellets, with a snack of chick starter, and household scraps. I do not see any signs of the others being ill, no discharge from the eyes or nose, no sign of injury. What could this be?