I had to thin my flock because I had a couple aggressive egg eaters. Now I think I still have one more so I tried something I read online. I blew out an egg and filled it with mustard and put it back in a nesting box. They said that the flavor of the mustard would make the birds associate a bad taste with eggs. (I even used horseradish mustard to ensure it would be unappealing.) This morning I went out and other than a faint odor from the mustard, there is no sign of the egg. I am wondering what in the world these chickens won't eat if they devoured every speck of that egg... Does anyone else have an eater that they have successfully broken of the habit? Thanks!