UH-Oh! I've heard of it but thought it was just a myth! EggBerta's maternal instints have kicked in and she is determined to sit on her (imaginary) eggs and hatch them into babies! I've tried explaining to her that we don't have a rooster so none of they eggs are fertilized...I've even removed the eggs from the nest but she still sits in her roosting box all by her loneseome ~ and she is ANGRY! We noticed that she was missing a lot one day (longer than it takes for her to lay an egg) and when we went to the box she squawked at us! She sounded like a dinosaur so we were calling her the Jurassic Park chicken. She's stopped laying altogether because in her mind she already has her "clutch" and she's even slowed the others production because they are afraid to go lay next to her! It's very tempting to buy her some fertilized eggs and let her carry out her motherly roll...stay tuned!