I have a chicken that consisantly lays a soft egg on their shelf. Not sure which one.I think because of this they have become egg eaters. They have plenty of feed, oyster shell and grit. Also get a small amt. of treats. I may get one or two eggs a day and find yolks in the nest. These are going to be two years old. I wonder if we should cull? Definately caught the GLW in the act. Also tried the wooden eggs. They kick them out of the box. Any other suggestions?