The Muscovy Duck (Cairina moschata) is a large, distinctive species of duck native to Central and South America, but with feral populations established in other parts of the world, including North America and Europe. Adult Muscovy Ducks typically measure between 25 and 34 inches in length and weigh between 5 and 15 pounds, making them one of the largest species of duck.

Distinguishing field marks of the Muscovy Duck include its large size, black plumage with iridescent green and purple highlights, and distinctive red facial skin around the bill and eyes. Another notable feature is the presence of fleshy caruncles on the face and at the base of the bill, more prominent in males than females. Muscovy Ducks also have long, broad wings and a slightly raised tail.

Muscovy Ducks are not migratory birds and are primarily sedentary, although they may undertake local movements in search of food or suitable breeding sites. They are highly adaptable and can be found in a variety of habitats, including freshwater lakes, rivers, ponds, marshes, and urban areas. Feral populations often thrive in parks, golf courses, and residential neighborhoods.

In addition to their natural range in Central and South America, Muscovy Ducks have been introduced to many other parts of the world as ornamental birds or for meat production. In some areas, they have become invasive and can outcompete native waterfowl for resources. However, they are also valued for their ability to control insect populations and algae in certain aquatic ecosystems.

Muscovy Ducks are omnivorous and feed on a wide variety of foods, including aquatic plants, insects, crustaceans, small fish, and even small mammals or reptiles. They are opportunistic feeders and will readily consume human-provided food scraps. Their adaptability to different diets and environments contributes to their success in both native and introduced habitats.

Despite their adaptability and widespread distribution, Muscovy Ducks face threats from habitat loss, pollution, and hunting pressure in some regions. Efforts to conserve wetland habitats and regulate populations in areas where they have become invasive are important for ensuring the continued well-being of this unique duck species.