My friend has organic chickens and has been getting a decreasing amount of eggs for the last month.We have looked for parasites externally she wormed them with garlic and nothing changed. She offsets some of the organic cost by selling eggs and is frustrated. She found some shell in one of the nesting boxes so she thought maybe an egg eater. We tested to see if we could figure out who by laying an egg in the run and like 8or 9 of her hens went after it. Are they all egg eaters? She was getting 5 eggs a day. Today she went out every hour and retrieved eggs and got 11. How do you break egg eaters? She is frantic and would hate to cull 3/4 of her flock. Please any advice. Thanks