a quacker
A box of quackers
ho, ho ,Quack
There are no such thing as a normal duck (please reword ur question and maybe I can help) :)
A good joke is "What do you get when you cross a cow with a duck? Milk and quackers."
Beavers are mammals and they can't cross-breed with avians like ducks, so technically crossing these two animals is impossible. However, the platypus is sometimes referred to as a cross between a duck and a beaver because of their appearance.
twinsfire quackers!
A miserable old quack.
A Gressingham Duck is a (now, I believe branded) cross of a mallard and peking duck. The purpose being to provide a large (peking), full flavoured (mallard) bird. This is now regarded as the 'generic duck' and although tasty, I would prefer to eat others!
A Campbell is a mallard derivative so yes it can cross with a muscovy. All wild mallards and domestic mallard derivatives can cross with any Muscovy Duck. However the offspring will be sterile (except extremely rare cases). Muscovy drake on mallard hen generates mullards which are fast-growing birds bred for meat. There are large industrial concerns that do this.
by incubator or with a broody hen, hatch them the same way you would hatch Any other duck egg
cracker
Graham - as in graham cracker.