Wood Duck (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (February 2)

Wood Duck (Aix sponsa)

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Male Wood Duck (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (February 2)
Male Wood Duck (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (February 2)

Common Names: Wood Duck, Carolina Duck
Order/Family: Anseriformes (Waterfowl)/Anatidae (Ducks, Geese, Swans)

The adult male has stunning multicolored iridescent plumage and red eyes, with a distinctive white flare down the neck. The female, less colorful, has a white eye-ring and a whitish throat. Both adults have crested heads. The speculum is iridescent blue-green with a white border on the trailing edge. It is about three-quarters the length of an adult mallard. It shares its genus with the Asian mandarin duck (Aix galericulata).

Male and Female Wood Duck Perching (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (April 1)
Male and Female Wood Duck Perching (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (April 1)
Male Wood Duck Next to Mallard (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (February 7)
Male Wood Duck Next to Mallard (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (February 7)

The wood duck is a medium-sized perching duck. Unlike most other ducks, the wood duck has sharp claws for perching in trees.  This surprising behavior means you must check above the waterline in the bushes when looking for them. Wood ducks are year-round residents in southern Nevada at Floyd Lamb and Henderson Bird Viewing Preserve. They are shy though and you will not always see them. The northern populations migrate south to Mexico. 75% of the wood ducks in the Pacific Flyway are non-migratory.

Wood ducks feed by dabbling (feeding from the surface rather than diving underwater) or grazing on land. They mainly eat berries, acorns, and seeds, but also insects, making them omnivores. They are able to crush acorns after swallowing them within their gizzard.

Male Wood Duck in Eclipse Plumage (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (July 4)
Male Wood Duck in Eclipse Plumage (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (July 4)
Male Wood Duck in Eclipse Plumage (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (July 23)
Male Wood Duck in Eclipse Plumage (Aix sponsa). Henderson Bird Viewing Preserve, Las Vegas (July 23)

By late summer, a male Wood Duck’s need for fancy feathers to attract the females has passed. Wood ducks molt all their feathers at once including flight feathers, meaning they are flightless for a month or more. The resulting dull brown feathers are known as eclipse plumage, meaning the subdued brown colors eclipse the usual brightly colored feathers. You can tell this is a male, and not a juvenile or female which look alike, by seeing the colorful, well defined bill and red eye.

Female Wood Duck (Aix sponsa). Henderson Bird Viewing Preserve, Nevada (June 15)
Female Wood Duck (Aix sponsa). Henderson Bird Viewing Preserve, Nevada (June 15)
Wood Ducks (Aix sponsa) in March. Floyd Lamb Park, Centennial Hills, Las Vegas (March 13)
Wood Ducks (Aix sponsa) in March. Floyd Lamb Park, Centennial Hills, Las Vegas (March 13)