The Mallard (Anas platyrhynchos) is native to the temperate and subtropical regions of North America, Europe, and Asia. Its range includes Canada, the United States, Mexico, most European countries, and extends across parts of Asia, including Russia, China, and Japan. It is also found in North Africa and has been introduced to regions such as Australia and New Zealand.

Mallards are highly adaptable and can inhabit a wide range of environments. They prefer freshwater wetlands, such as ponds, lakes, rivers, and marshes, with abundant aquatic vegetation. They can also be found in brackish and coastal habitats, as well as urban and suburban areas where water sources are available.

Mallards are omnivorous and occupy a versatile ecological niche. Their diet includes aquatic vegetation, insects, crustaceans, and small fish. They are surface feeders and dabblers, foraging in shallow waters. Their adaptability to varied environments makes them among the most widespread and recognized duck species.