Black-necked swan (Cygnus melancoryphus)

Classification: Genus Swans (Cygnus); Tribe Swans (Cygnini); Subfamily Anserinae; Family Waterfowl (Anatidae)
General: The black-necked swan (Cygnus melancoryphus) is a species of waterfowl in the tribe Cygnini of the subfamily Anserinae.^[5][6] It is found in Argentina, Brazil, Chile, Uruguay, and the Falkland Islands.^[7] [more]

First documented observation : 2019-02-12 in Patagonia.