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The Mallard Is Thought to Be the Most Abundant and Wide- Legs and Webbed Feet Make Them Excellent Swimmers, and Ranging Duck on Earth

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The Mallard Is Thought to Be the Most Abundant and Wide- Legs and Webbed Feet Make Them Excellent Swimmers, and Ranging Duck on Earth Anas platyrhynchos Susan L. Shafer The by Eileen Stegemann and Bryan Swift Art by Jean Gawalt Visit any park with a pond and you’ll likely be greeted by The ubiquitous mallard owes much of its wide distri- a familiar sight—a group of mallards jockeying for position bution to its tremendous adaptability to various habitat as they beg for food. Some are so tame and bold that they types and nest sites. It can be found in almost any water will waddle right up to you demanding a handout. Others body, including wetlands, lakes, ponds, rivers, and even are content to hang back, hoping for a scrap. flooded fields. In addition, mallards occur in most urban Mallards are the first duck seen allardby many. They are a park ponds, as well as in brackish and saltwater. favorite of children, and are popular with bird watchers and Like all waterfowl, mallards are well adapted to their waterfowlM hunters alike. Mallards are found throughout lives on the water. Their broad, flattened bills allow them North America and all across Europe and Asia. In fact, to feed on aquatic plants and invertebrates. Their wide-set the mallard is thought to be the most abundant and wide- legs and webbed feet make them excellent swimmers, and ranging duck on Earth. In New York, it is an extremely their waterproof plumage and thick layers of down feathers common year-round resident, with the greatest number keep them warm in cold weather. occurring in the Coastal Lowland, St. Lawrence Valley and Ma le (dra ke) ma lla rds a re ea sily recognized—t heir tradema rk Great Lakes Plain. metallic green heads, white neck ring, chestnut-colored chest, New York State Conservationist, October 2008 15 Conservationist October 2008.indd 19 9/4/2008 4:18:25 PM Conservationist October 2008.indd 20 9/4/2008 4:18:33 PM Conservationist October 2008.indd 21 9/4/2008 4:18:41 PM The ubiquitous mallard owes its wide distribution, in part, to its tremendous adaptability to various habitat types and nest sites. Mallards breed throughout the Mallards are perhaps the most pro- United States and Canada, nesting lific breeder in the waterfowl world, in a wide variety of habitats. In New and are believed to be the ancestor of York, they nest in marshes, wetlands, nearly all domestic duck breeds, except fields, grasslands close to water, beaver the Muscovy. Mallards frequently inter- flows, remote bogs, tidal marshes, sub- breed with domestic stock, producing an urban gardens, and urban park ponds. amazing variety of patterns and colors. Nests are usually constructed in dense Many of the domestic breeds look like vegetation, and consist of a depression wild birds, but are usually larger. In the scraped in the ground (or built in a pro- wild, mallards often interbreed with its tected location, such as a tree cavity) close relative, the American black duck. and lined with down from the female's Unlike many hybrids, mallard and black breast, and vegetation. duck offspring are usually fertile. Susan L Shafer L Susan Although breeding occurs in the Adult mallards are highly gregarious spring, mallards begin courting in the outside of the breeding season, and may fall, and by midwinter pairs have formed. form large flocks on the water. However, After mating, hens lay between one and when flying, mallards usually remain in yellow bill tipped with black, and white 13 cream to greenish buff-colored eggs. small flocks. tail with two black, curled tail feathers The hens incubate the eggs for 23 to 30 make them hard to confuse with other days. Drakes stay with the hens until duck species. In contrast, females (hens) incubation is well underway, then they are mottled brown in color and have an Mallard Facts: leave to join a flock of other males. • A large dabbling duck orange bill, usually speckled with black Newly hatched chicks are covered • Size: 20 -26 inches spots. Both sexes have a distinct violet in down. They leave the nest 13 to 16 • Wingspan: 32 -37 inches metallic speculum (wing patch) bor- hours after hatching, and can swim and • Weight:3 2- pounds dered with white on each wing. During feed on insects immediately. Until they • Drakes make a low “kwek ” or their annual molt, when they shed their become independent at 52 to 70 days of “”yeeb sound; hens make the well known loud quack feathers in summer and early fall, drakes age, they will stay near the female for • Swims with tail held above the lack their bright breeding plumage protection. Mallards have a number of water enabling it to spring directly and resemble the more dull-colored natural enemies, including snapping out of the water and into the air females. However, drakes are still dis- turtles, raccoons, skunk, mink, foxes, • The most common wild duck in New tinguishable by their yellow bills and coyotes and raptors. York and the world reddish breasts. A type of puddle (or dabbling) duck, mallards generally feed on or just below the surface of the water by tipping-up or dabbling with their rumps in the air. They eat a variety of items, including aquatic invertebrates, aquatic vege- tation, insects and larvae. Unlike diving ducks which have their legs positioned far back on their bodies, making it dif- ficult to walk on land, puddle ducks like t he mallard have legs positioned near the middle of their bodies, allowing them to Shafer L Susan walk well on land. As a result, they can also be seen feeding on land, grazing on seeds, acorns, grains and plants. 18 New York State Conservationist, October 2008 Conservationist October 2008.indd 22 9/4/2008 4:18:46 PM.
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