They sure are gorgeous. Muscovies are awesome, I've never been a fan of the very true asiatic looking ones, but was surprised a few years ago when I was given some babies for my daughter and later found out they were muscovies (as they got their red faces) - absolutely adored them. But my neighbor's dog wound up killing all my ducks that year - 1 male 3 females within a couple days before I could get them up shelter after the 1st one went missng. You want to talk about mad!
But yeah my muscovy hen now, was an adult when I got her, but considering how badly she'd been raised before hand (raised/kept in a dog kennel from 6 months - 10 months- when i got her) I was surprised how easy she is to get along with, she isn't the put your hands on anytime kinda duck, but she loves for you to talk to her, and she never has bitten or even hissed at me when I am trying to check out her eggs. I'm starting to suspect she's sitting on duds I'd thought they'd start hatching by now though I'm not sure precisely when she started sitting on them, but I'll give it another week then shoo her off the next sometime and candle the eggs to check things out. I think she's fried them still sitting on them all the time in that wood box in 90 degree weather.