This is a post of questions.
Of course I know nothing regarding the difference in male and female duck development, but some things I’ve read (other than the obvious egg laying) are vocalization, tail placement, and plumage,
if that’s even what’s it’s called. Are there others?
I would think since male ducks have penises, it would be easy for the hatcheries to sex them, right?

What are the chances that I might have gotten an accidental male? Could Petey actually be a male? She is somewhat of a bully, and always gonna get what she wants - food, attention, you name it. In the tub, she sneaks up on all the others and bites them on their little funky looking tails and makes them jump and squeal. Or their feet - picture a shark swimming underwater and attacking an unsuspecting foot It is funny to watch in a way, but I’m sure the others don’t appreciate it.
I am also guessing the cute little ‘nibbling’ they do on my fingers, hands, neck, and wherever is not a good habit and I should discourage it, right?
Also, these appendages called wings!?! Heck, theirs aren’t big enough to keep a Robin in flight. I now know why these fat arses cannot fly. Do the wings begin growing exponentially at any point?
And y’all aren’t kidding about being SSSers (Sharp Sh*t Shooters). Point, Aim, Fire, Splat! Even though there is a copious amount, I do not find it repulsive at all. I am comparing it to a chicken’s cecal and broody - both are utterly disgusting. Duckie poop is just really wet. Does it ever BEGIN to stink or somewhat remain the same, just more of it?