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The falcated duck has a large range, with an estimated global extent of occurrence of 1,000,000–10,000,000 km 2 (390,000–3,860,000 sq mi). [8] The breeding range of the falcated duck is from eastern Siberia and Mongolia to northeastern China and northern Japan with wintering grounds in the northern part of southeast Asia to northeastern ...
The gadwall was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. [3] DNA studies have shown that it is a sister species with the falcated duck; the two are closely related to the three species of wigeons, and all of them have been assigned to the genus Mareca.
The wigeons' closest relatives, forming with them the genus Mareca, are the gadwall and the falcated duck. [1] [2] All three wigeons are similarly shaped, with a steep forehead and bulbous rear to the head. All three wigeon species hybridise in captivity [3] while American and Eurasian wigeons hybridise in the wild. [4]
This is a list of the breeds of domestic duck which have official recognition at national or international level. [1]Most breeds of duck derive from the wild mallard, Anas platyrhynchos, while a small minority are descendants of the Muscovy duck, Cairina moschata.
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]
Aug. 18—MEMPHIS, Tenn. — Continental breeding duck populations are down 7% from 2022, Ducks Unlimited said Friday, Aug. 18, in reporting results from the annual spring North American waterfowl ...
Diagram depicting male and female plumage. The crested shelduck was initially collected in April 1877 near Vladivostok, Russia. [5] However, it was not described until 1890 when the English zoologist Philip Lutley Sclater decided that the specimen was a possible hybrid between the ruddy shelduck (Tadorna ferruginea) and falcated duck (Mareca falcata).
For species found in the 50 states, Puerto Rico, and the U.S. Virgin Islands, the taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the list are those of the AOS, the recognized scientific authority on the taxonomy and nomenclature of North and Middle American birds.