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However, mtDNA sequence analyses of the cytochrome b and NADH dehydrogenase subunit 2 genes indicate that Tachyeres rather belongs into a distinct clade of aberrant South American dabbling ducks, which also includes the Brazilian, the Crested, and the Bronze-winged Ducks.
Patagonian Crested Duck, also known as the Southern Crested Duck, or the Grey Duck in the Falkland Islands, the nominate of two subspecies of the Crested Duck