Hawaiian Duck
Anas wyvilliana
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Acerca de
El pato hawaiano, conocido localmente como koloa maoli, es una especie en peligro de extinción endémica de las islas hawaianas. Estrechamente emparentado con el pato de collar, es de tamaño más pequeño y presenta plumaje marrón moteado en ambos sexos. La pérdida de hábitat y la hibridación con patos de collar introducidos representan graves amenazas para su supervivencia.
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| Envergadura | 44,0 cm | 17.3 in |
| Peso | 573,25 g | 20.22 oz |
Identificación
Plumaje
Mottled brown plumage; males may show slight green gloss on head but reduced compared to Mallard. Iridescent blue-purple speculum with white borders. Orange bill. Females similar to males; pale buff supercilium.
Habitat & Range
Freshwater marshes, rivers, reservoirs, and taro fields on Kauai and other Hawaiian islands. Nests in dense vegetation near water. Threatened by hybridization with domestic or feral Mallards.
Distribución geográfica
Ranges across sub-Saharan Africa in open grasslands and wetland edges. Locally nomadic following seasonal rainfall patterns.
Diet & Feeding
Fish-diving duck of South American rivers; uses serrated bill to catch fish and aquatic invertebrates; diet mainly fish year-round.
Estado de conservación
Comportamiento y reproducción
Nidificación
Nest type: HC.
Tamaño de la puesta
9-13
Sonido
Canto
Female produces a raspy, descending quacking series; male gives a soft, nasal sound. Calls similar to Mallard but higher-pitched; alarm is a rapid-fire quacking rattle.
Taxonomía
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| Orden | Anseriformes (Aves Acuáticas) |
| Familia | Anatidae (Patos, Gansos y Cisnes) |
| Genus | Anas |
| Especies | Anas wyvilliana |
Distribution
Hawaiian Duck has been recorded in 5 countries.
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External Databases
Preguntas frecuentes
What does the Hawaiian Duck eat?
Where does the Hawaiian Duck live?
Is the Hawaiian Duck endangered?
How does the Hawaiian Duck nest?
What does the Hawaiian Duck sound like?
How big is the Hawaiian Duck?
What order and family does the Hawaiian Duck belong to?
Similar Birds
Other species in the Anatidae family