I have one hen out of 28 that pecks eggs. She is an older chicken someone gave us, ours are young. She only pecks brown eggs, her own color (red sex link). I have heard that mustard inside a fake hollow egg works. Will try this. She is now fitted with peerless peepers. Has anyone stopped egg pecking with this? I know I should probably get rid of her, but it enjoy solving the problem and outsmarting the chicken. Its not as easy as it sounds! WOULD LOVE posts on other ideas to stop pecking, other than bill cutting, or the stew pot. And will Peerless peeper work here?