Hawaiian Duck
NameHawaiian Duck
Common NameHawaiian Duck
Scientific NameAnas wyvilliana
FamilyAnatidae
Wingspan (cm)65
Length (cm)47.5
Weight (g)525
Plumage DetailsOverall mottled brown plumage, with males often slightly darker than females. The most striking feature is the iridescent blue speculum on the secondary flight feathers, bordered by black and white. The bill is olive-green to yellowish, and legs are orange.
Vocalization / CallFemales produce a loud, typical duck quack, similar to a Mallard. Males have a softer, lower-pitched call, often described as a 'rheb-rheb' sound.
Primary Dietomnivore
Primary Habitatswetland, coastal, urban
Conservation Statusendangered
Geographic RangeEndemic to the Hawaiian Islands, primarily found on Kauaʻi. Reintroduced populations exist on Oʻahu and Hawaiʻi Island, inhabiting freshwater wetlands, ponds, streams, and coastal marshes.
Identifying Featuresmottled brown plumage, iridescent blue speculum with black and white borders, olive-green to yellowish bill, orange legs and feet, endemic to Hawaiian Islands
Description
The Hawaiian Duck is a medium-sized dabbling duck endemic to the Hawaiian Islands. Both sexes exhibit mottled brown plumage, with a distinctive iridescent blue speculum on the wing. They are typically found foraging in shallow freshwater habitats.
