I heard they are good mothers. Is there a way to make sure they can't hatch eggs? I heard they are very big, with females topping out at 10 and males topping out at around 15. That seems a bit large. The males could really hurt my Mallard females with their size. Would it be better if I stuck them with my geese? They will be around the same weight as my Sebastopol. I also have some questions about a hatchery. What kind of Muscovy does McMurray sell eggs for? Lastly, I have one more question. Are Muscovies that good? Are they worth the $28 I would pay to get sexed ones on California Hatchery?