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Encyclopedia > Mexican Duck
Mexican Duck
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Genus: Anas
Species: diazi
Binomial name
Anas diazi
(Ridgway, 1886)

The Mexican Duck (Anas diazi) is a dabbling duck in the genus Anas which breeds in Mexico and the southern USA. Most of the population is resident, but some northern birds migrate south to Mexico in winter.


The Mexican Duck was formerly considered a good species, but hybridisation with the closely related Mallard, which has spread into its range, has introduced genes from that species into diazi, and the taxonomic status is consequently compromised.


It is a bird of most wetlands, including ponds and rivers, and usually feeds by dabbling for plant food or grazing. It nests usually on a river bank, but not always particularly near water.


Both sexes of this 51-56 cm length bird resemble a female Mallard, but with a slightly darker body. Mexican Duck is mainly brown, a blue speculum edged with white, obvious in flight or at rest. The male has a brighter yellow bill than the female.


The male has a nasal call, whereas the female has the very familiar "quack" always associated with ducks.


The binomial name commemorates the Mexican engineer and geographer Augustin Diaz.


Reference

Wildfowl by Madge and Burn, ISBN 0-7470-2201-1


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