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Mexican Duck (Anas diazi)    Ducks, Geese and Waterfowl (Anatidae)
Mexicoand ~ Pato Mexicano ~ Mexikansk And
Mexican Duck 248    (1 photos)
2008-10-17    Parque México (Aguascalientes), Mexico

Narrow white framing of speculum and general dark body color. Male because of the bill color.


Mexican Duck 249    (1 photos)
2008-10-17    Parque México (Aguascalientes), Mexico

From below it looks very much like the nominate race, but shows a darker belly.


Mexican Duck 247    (1 photos)
2008-12-30    Parque el Cedazo (Aguascalientes), Mexico

The male, behind, looks like a true diazi, while the female in front looks somewhat intermediate: The orange bill with dark spots is a character of the female of the nominate race, while the dark body is a character of the diazi race.


Mexican Duck 493    (1 photos)
2010-07-25    Presa La Colorada (agu), Mexico

Male. Yellowgreenish bill and dark markings on belly.


Mexican Duck 492    (1 photos)
2010-08-11    Presa La Colorada (agu), Mexico

Female. No dark markings on the bill.


Mexican Duck 2288    (2 photos)
2016-05-14    Presa la Vega (jal), Mexico

Female with orange bill. Most common duck this day, around 30.


Mexican Duck 2289    (1 photos)
2016-05-14    Presa la Vega (jal), Mexico

Males in front and at the back, greenish bills, female in the middle with paler chest and apparently shorter bill?


Mexican Duck 2290    (1 photos)
2016-05-14    Presa la Vega (jal), Mexico

15 birds. Study of flight silhouette. Notice that size depends on the distance and the angle to the camera.


Mexican Duck 3005    (6 photos)
2019-04-28    Laguna Zapotlán (jal), Mexico

Male with the greenish bill. With Blue-winged Teal and a Long-billed Dowitcher. Interesting optical effect that makes the Blue-winged Teal look like a dwarf compared to the Mexican Duck. Of course there are size differences between the two, but not as much as is indicated in the first picture. This effect often seems to happen when one bird is standing out of water with the legs and the other is deep in.


Mexican Duck 3258    (3 photos)
2019-11-24    Bosque de Chapultepec (cdmx), Mexico

Female with orange bill. The dark markings on the bill are variable. Even in the overexposed photo one can appreciate the strong contrast between the color of the body and the neck.

Mallard is rare this far south in Mexico, but an occasional park bird could be causing identification problems, but on the is bird the narrow white trailing edge to the speculum is a good indication of a pure Mexican Duck. And the amount of white above the speculum is a good guarantee that we are not talking about a vagrant Mottled Duck.



Mexican Duck 3259    (3 photos)
2019-11-24    Bosque de Chapultepec (cdmx), Mexico

Male with the yellow-green bill.


Mexican Duck 3260    (1 photos)
2019-11-24    Bosque de Chapultepec (cdmx), Mexico

Male showing all the good field marks: Bill color, body-neck contrast and right amount of white in front and behind speculum.


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