My female Rouen so wants babies, but every time she sets on a clutch from mating with our male mallard, no babies result. Is it possible that the eggs could ever be fertile? They mate, but he has a hatd time as she is so much bigger than him. It breaks my heart that she sets for 28 days and the eggs slowly rot. She is 18 days in and down to 8 eggs cause she kicks them out if they are bad. I soooo want her to have at least one baby cause she tries so hard to be a mom! Any knowledge I would appreciate! Thanks in advance!