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Mareca
	Eurasian wigeon, Mareca penelope
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Anseriformes
Family:	Anatidae
Tribe:	Anatini
Genus:	Mareca; Stephens, 1824
Type species
	Anas penelope; Linnaeus, 1758
Synonyms
	Anas;

Mareca is a genus or subgenus of ducks in the family Anatidae that includes the wigeons.

The species now placed in this genus were formerly placed in the genus Anas. A molecular phylogentic study comparing mitochondrial DNA sequences published in 2009 found that the genus Anas, as then defined, was not monophyletic.^[1] Based on the published phylogeny, the genus Anas was split into four monophyletic genera with five extant species moved into the resurrected genus Mareca.^[2]

The genus Mareca was introduced by English naturalist James Francis Stephens in 1824. The type species is the Eurasian wigeon.^[3]^[4] The name of the genus is from the Portuguese word Marreco for a small duck.^[5]

Extant species

The genus Mareca contains these species:^[2]

Genus **Mareca** – Stephens, 1824 – two species
Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Gadwall Male Female	Mareca strepera (Linnaeus, 1758) two subspecies M. s. strepera (Linnaeus, 1758) †M. s. couesi (Streets, 1876)	Europe, Asia and central North America	Size: Habitat: Diet:	LC
Falcated duck Male Female	Mareca falcata (Georgi, 1775)	Eastern Asia	Size: Habitat: Diet:	NT
Eurasian wigeon Male Female	Mareca penelope (Linnaeus, 1758)	Europe and Asia	Size: Habitat: Diet:	LC
Chiloé wigeon Male Female	Mareca sibilatrix (Poeppig, 1829)	Southern South America	Size: Habitat: Diet:	LC
American wigeon Male Female	Mareca americana (Gmelin, JF, 1789)	North of Canada and Alaska and also in the Interior West through Idaho, Colorado, the Dakotas, and Minnesota, as well as eastern Washington and Oregon	Size: Habitat: Diet:	LC

Fossils

Image	Scientific name	Common name	Distribution
	Mareca marecula†	Amsterdam wigeon	Extinct, formerly found on Île Amsterdam in the French Southern and Antarctic Lands

Phylogeny

Cladogram based on the analysis of Gonzalez and colleagues published in 2009.^[1]

Mareca

	American wigeon

	Chiloé wigeon

Eurasian wigeon

	Falcated teal

	Gadwall

References

^ ^a ^b Gonzalez, J.; Düttmann, H.; Wink, M. (2009). "Phylogenetic relationships based on two mitochondrial genes and hybridization patterns in Anatidae". Journal of Zoology. 279 (3): 310–318. doi:10.1111/j.1469-7998.2009.00622.x.
^ ^a ^b Gill, Frank; Donsker, David, eds. (2017). "Screamers, ducks, geese & swans". World Bird List Version 7.3. International Ornithologists' Union. Retrieved 23 July 2017.
^ Stephens, James Francis (1824). General zoology, or Systematic natural history, by the late George Shaw. Vol. 12 Part 2. London: Printed for G. Kearsley. p. 130.
^ Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-list of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 460.
^ Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 241. ISBN 978-1-4081-2501-4.