Help! This is the first year I have seen bluebirds in my backyard. Of course, I immediately bought mealworms. The pair come regularly to eat. They built a nest in one of my boxes and it has been complete for about 2 weeks. No eggs! Should I just keep watching and waiting or should I clean the box? My experience with other birds is that they soon lay eggs after the nest is complete. The pair spend hours in my backyard watching the nest and coming for their treats.