In their native South American habitats, wild Muscovies nest in tree cavities. The larger, domestic varieties have lost this natural trait and normally dig shallow nest depressions in landscaped shrub and flower areas. Large numbers of domestic ducks can be found in Florida. Figure 1 . Figure 2 .
Many people consider unconfined domestic ducks a nuisance.
Some breeds can be aggressive toward pets and children, deposit droppings where they are not desired, and cause damage to lawns and gardens by their feeding and nesting activities. Further, ducks lay many eggs, and uncontrolled duck populations can increase dramatically in a short time. In small, urban ponds, high bird densities contribute to reduced water quality that lessens the aesthetic value and presents a potential public health hazard. Domestic ducks also can transmit diseases to wild waterfowl. All confirmed outbreaks of duck plague in wild ducks have been linked to domestic ducks.