Yes, and the offspring would be a a sterile F1 hybrid called a Mulard or Moulard.
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Yes, they do. Otherwise there would be no Mallard Ducks.
If the result you want is a mallard, yes. If mallards can just breed with other ducks, yes, a mallard duck can breed other breed ducks.
Mallard ducks are available from most hatcheries. They are inexpensive, easy to breed and quite popular pets. You will need a male an female duck to breed, ad each duck needs to be at least two years old.
No.
Mallard ducks are not capable of changing gender. There is no known species of duck that is capable of that.
Mallard ducks were never introduced. Mallards were the first duck ever on planet Earth.
Yes, in general, mallard ducks are monogamous (meaning, of course, they breed with only one female per mating season). Often, a male mallard will breed with second female even after he is already paired with one, but generally speaking they are monogamous.
from an egg
Yes.
yes they do
Foxes, and raccoons eat young mallard ducks. Snapping turtles will also eat them. Mallard duck eggs are eaten by snakes, and crows.
A box of quackers
Yes, South Carolina has mallard ducks. These ducks can be found in almost any area with mild temperatures across Asia, Europe, and America.