I have one hen who really wants to lay on eggs. Every day I find her on the eggs, I remove them, and she gets up leaves the nest and acts just like the rest of them. But she has started kicking the eggs of 1 hen out of the nest. The same hen- she will only kick hers out. She lays on everyone else's eggs. Sometimes I find them right outside the nest box, and sometimes down on the ground in the mud. Is this normal? Wondering why she is doing that!