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If you want to have live ducks and have your very own duck farm, tips can be found at this link (you'll probably have to copy & paste it if you really wanna look)
http://www.ayushveda.com/tipson/starting-a-duck-farm/
Of course, as with any business, the first step is a conscious decision to start the business. You don't have to actually have any ducks to be a duck farmer. It is kind of like being a used car salesman. You don't have to have any used cars. You can sell other people's used cars.
Go find a duck at the park. Pick it up .......... you have raised your first duck!
Quack, Quack!