Ok, so definitely muscovy, and maybe female from the size. I could be wrong
As for the khaki, it really looks like a drake!! But if it quacks.....then it must be a girl.... Do you know the different sounds they make?
I was wondering the same thing. I have two Khakis. They both are the same dark brown, except this one has a white mark on the neck. Can' t tell if they are drakes or not and why do the wings splay out like that? Do they still need time to fill out?