Its really hard to break a Muscovy duck from broody once she sets her mind to it believe I have tried. So I just let them go I do take all eggs away though because no need of nasty rotten eggs in the nest you could get fake ones for her to sit but you have to make sure she comes out every day and eats drinks baths and poops. Some do some won’t. Only other thing you could do is break up the nest and lock her out but then you risk her going someplace where you can’t find her and getting killed by a predator . My Muscovys have a big molt in late fall. That’s the only time I notice molting they lose their flight feathers. The mail man told me the other day they had boxes of chicks up in the office waiting for pick up it made me smile thinking others around here enjoyed poultry too.
Aw, maybe I’ll let her have a couple of fake eggs. It is her first time after all. At this point, she still gets off her nest and goes on adventures with her sisters, but she yells at me for a bit beforehand and calls me rude names. In the morning, I am able to tempt her off her nest with patience and a few mealworms and then she leaves her eggs for quite some time before returning. It’s a good thing that the eggs are infertile, as she still prioritizes going to the garden for earthworms over sitting.