I have 1 Peking 1 Kahki/Peking mix that lay eggs evreyday. I also have a Peking drake who makes sure they are fertilized. However, none of my ducks are broody, but my Golden Laced Wayandotte is. She has been sitting on the ducks eggs for about 10 days now. With the gestation period being 28 days, can she hatch them with a longer gestation period or will she desert them after 21 days?