This male Bufflehead Duck was photographed at Lake Park on Lake Michigan in Milwaukee, Wisconsin.

This male Bufflehead Duck was photographed at Lake Park on Lake Michigan in Milwaukee, Wisconsin.

This female Bufflehead Duck was also photographed in Lake Park in Milwaukee, Wisconsin.

This female Bufflehead Duck was also photographed in Lake Park in Milwaukee, Wisconsin.

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The male Bufflehead Duck is a small duck with mostly white and a black back, and a puffy black head with a large bonnet-like white patch. It has a gray bill. The female Bufflehead Duck has a dark brown head with white cheek spot, and a dark brown back with white wing patch, and a small gray bill. The breast and lower body is light brown. It has a range of Alaska, Canada, Northwestern United States, and winters to Mexico and the Gulf Coast. They have a habitat in lakes, ponds, rivers, and salt bays, a usually are seen in a small group. It is less sociable than most ducks, almost never seen in large flocks, and takes wing easily from the water with rapid wingbeats. This makes more difficult to photograph. A diminutive diver and very energetic in its feeding. It feeds on plant material, aquatic insects, and crustaceans and mollusks.