Wild ducks may roam free all over the world, but their domesticated counterparts will never fly away from their caretakers for a key scientific reason.

Bigger than mallards and unusual in appearance, the Muscovy duck species is common in Florida and some cities in the U.S.

Domesticated ducks are heavier than wild ducks and thus have more difficulty flying. They can also be differentiated because they frequently have a larger proportion of white feathers than their wild ...