One of my ducks has made a little nest in our duck house and has 9 eggs in there. She has been sitting on them in the morning for the last few days, but then spends the afternoon doing her normal thing running around the garden. My understanding is that she needs to sit on the eggs all day to hatch them, and this half-assed broodiness won't work. Is that true? If she's not actually going to hatch any ducklings I'd rather take the eggs away from her and make an omelette, but if she's going to hatch ducklings I will leave her be.