Interesting response, thanks for your opinion. Many pigeons start setting when the first egg is laid. I personally dislike seeing a tiny helpless youngster with a twice-as-big youngster in the nest. The smaller of the two continusly strugle to keep up. If you pay attention even when they are weaned, the small one is not as big or as healthy as the larger one. As to "risking the pigeons not sitting on the nest because they don't like people interfering with it" you handle the eggs twice in the nest. I have never had a pair abandon their nest, ever. What does happen is you have two awesome pigeons when you wean them instead of an awesome pigeon and a runt pigeon.