Novice parents to a broody duck! We found her sitting on her clutch 11 days ago and candled 17 eggs after 7 days and think we have 8-10 fertilized. Today we checked the nest again and found 4 new eggs added. We have another female who had left eggs in another location but are now unsure if she added to the clutch or if the broody duck (Grayling) has laid additional eggs. Broody duck also leaves the eggs for extended periods of time. Is this normal behavior for her to sit only about half the day? They are Swedish Blues and the broody duck had ducklings last spring. We adopted these girls and would love to have some babies from our Pekin drake but not sure her heart is in it! Any and all advice much appreciated!