Arkansas is home to the largest population of wintering mallard ducks in North America. What region do they primarily gather in?

The primary gathering region for the largest population of wintering mallard ducks in North America is the Mississippi Alluvial Plain, commonly referred to as the Delta. This area is characterized by rich wetlands and abundant water sources, which provide an ideal habitat for mallards during their wintering period. The combination of agricultural fields and natural wetlands in the Delta supports a diverse range of food sources, making it a critical stopover for migrating waterfowl, particularly mallards.

The other regions mentioned, such as the Ozark Plateau, the Arkansas River Valley, and the Ouachita Mountains, do not offer the same extensive wetland habitats or food availability that the Delta provides. While these areas may have some waterfowl, they are not as significant for the large populations of wintering mallards compared to the Delta region, where conditions are optimal for their survival during the colder months.