Mareca strepera couesi (Streets, 1876:46)

Coues' gadwall, Washington Island gadwall



Taxonomy & Nomenclature

Synonym/s: Chaulelasmus couesi Streets, 1876:46 (original combination); Anas strepera couesi (Streets, 1876:46)


Regarded as "doubtfully distinct" by (Hume & Walters, 2012). Generic placement here follows that suggested by (Gonzalez et al., 2009).


Conservation Status


Last record: January 1874

IUCN RedList status: Extinct



Teraina, Kiribati (= Washington Island = New York Island)


Biology & Ecology




Only known from two immature specimens, 1 male and 1 female.






Original scientific description:

Streets, Thomas H. (1876). Description of a new duck from Washington Island. Bulletin of the Nuttall Ornithological Club 1(2): 46-47.


Other references:

BirdLife International. (2012). Anas strepera. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 28 January 2013.

Carboneras, C. (1992). Family Anatidae (Ducks, Geese and Swans). In Handbook of the Birds of the World Volume 1: Ostrich to Ducks (J. del Hoyo, A. Elliott and J. Sargatal eds). Lynx Edicions, Barcelona.

Day, David. (1981). The Doomsday Book of Animals: A Natural History of Vanished Species. New York, N.Y.: The Viking Press.

Gonzalez, J., Düttman, H., and Wink, M. (2009). Phylogenetic Relationships Based on Two Mitochondrial Genes and Hybridization Patterns in Anatidae, J. Zool. 279(3): 310-318.

Greenway, J. C. (1967). Extinct and Vanishing Birds of the World. Dover Publications, New York.

Hume, Julian Pender and Walters, Michael. (2012). Extinct birds. London: T & AD Poyser. 544 pp.

Matthews, Thomas J. et al. (2022). Threatened and extinct island endemic birds of the world: Distribution, threats and functional diversity. Journal of Biogeography.

Ripley, Sidney Dillon. (1943). Pacific Waterfowl. The Avicultural Magazine ser. 5. 8(3): 67-70.

Szabo, J.K., Khwaja, N., Garnett, S.T., Butchart, S.H.M. (2012). Global Patterns and Drivers of Avian Extinctions at the Species and Subspecies Level. PLoS ONE 7(10): e47080.

Thibault, Jean-Claude and Cibois, Alice. (2017). Birds of Eastern Polynesia. A Biogeographic Atlas. Lynx Edicions, Barcelona.

Wetmore, Alexander. (1925). The Coues Gadwall Extinct. Condor 27(1): 36.

Young, H. Glyn, Tonge, Simon J. and Hume, Julian Pender. (1996). Review of Holocene wildfowl extinctions. Wildfowl 47: 167-181.


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