Harteman Wildfowl | kvk 90846257 | ubn 6872294

Taxa of Threatened Waterfowl of the World

Identified by the Threatened Waterfowl Specialist Group

Update: January 4th 2022, following the TWSG website


The IUCN SSC Threatened Waterfowl Specialist Group (TWSG) identifies which Anseriformes taxa are globally threatened, monitors their status, produces international action plans and exchanges information on conservation projects on globally threatened Anseriformes and encourages contacts between everyone working with or enthusiastic about these ducks, geese, swans and screamers. To date (2020), the TWSG has helped bring about major advances in the conservation of many threatened waterfowl, such as the Hawaiian goose, red-breasted goose, white-headed duck, white-winged duck, Madagascar pochard and scaly-sided merganser.




TWSG is primarily interested in the species, subspecies and populations of Anseriformes listed below, but keeps watch over every family member:



Extinct species

The IUCN category Extinct includes species extinct since 1500.


New Zealand Swan Cygnus sumnerensis

Mauritian Shelduck Alopochen mauritiana

Réunion Shelduck Mascarenachen kervazoi

Chatham Island Duck Pachyanas chathamica

Finsch’s Duck Chenonetta finschi

Mauritian Duck Anas theodori

Amsterdam Island Duck Anas marecula

Labrador Duck Camptorhynchus labradorius

Auckland Islands Merganser Mergus australis


Critically Endangered

Crested Shelduck Tadorna cristata
Laysan Teal Anas laysanensis

Pink-headed Duck Rhodonessa caryophyllacea

Baer’s Pochard Aythya baeri
Madagascar Pochard Aythya innotata

Brazilian Merganser Mergus octosetaceus



Blue Duck Hymenolaimus malacorhynchos

White-winged Duck Cairina scutulata

Hawaiian Duck Anas wyvilliana

Meller’s Duck Anas melleri

Madagascar Teal Anas bernieri

Scaly-sided Merganser Mergus squamatus

White-headed Duck Oxyura leucocephala

Maccoa Duck Oxyura maccoa



Swan Goose Anser cygnoid

Lesser White-fronted Goose Anser erythropus

Red-breasted Goose Branta ruficollis

Blue-winged Goose Cyanochen cyanoptera

White-headed Steamer Duck Tachyeres leucocephalus

Eaton’s Pintail Anas eatoni
Philippine Duck Anas luzonica
Andaman Teal Anas albogularis

Campbell Islands Teal Anas nesiotis

Marbled Teal Marmaronetta angustirostris

Common Pochard Aythya ferina

Velvet Scoter Melanitta fusca

Steller’s Eider Polysticta stelleri

Long-tailed Duck Clangula hyemalis


Near Threatened

West Indian Whistling-duck Dendrocygna arborea

Hawaiian Goose Branta sandvicensis

Northern Screamer Chauna chavaria

Emperor Goose Anser canagicus

Orinoco Goose Oressochen (Neochen) jubata

Falcated Duck Mareca falcata

Sunda teal, Anas gibberifrons

Auckland Island Teal Anas aucklandica


Brown Teal Anas chlorotis

Spectacled Duck Speculanas specularis

Ferruginous Duck Aythya nyroca

Black Scoter Melanitta americana

Common Eider Somateria mollissima

Spectacled Eider Somateria fischeri

Blue-billed Duck Oxyura australis

Least concern

(only those species that were previously listed in a higher category are shown here)

Comb Duck Sarkidiornis sylvicola

Baikal Teal Sibrionetta formosa

Stejneger’s Scoter Melanitta stejnegeri  (as Asiatic White-winged Scoter Melanitta fusca deglandi)

Salvadori's teal, Salvadorina waigiuensis




Extinct since human contact, AD 1600

Coue's Gadwall Mareca strepera couesi

Mariana Mallard Anas platyrhynchos oustaleti

Rennell Island Grey Teal Anas gracilis remissa

Chatham Island Teal Anas chlorotis ssp. nov


Critically Endangered

Niceforo’s Pintail Anas georgica niceforoi

Borrero’s Cinnamon Teal Anas cyanoptera borreroi



Madagascar White-backed Duck Thalassornis leuconotus insularis

Tropical Cinnamon Teal Anas cyanoptera tropica

Galapagos Pintail Anas bahamensis galapagensis

Crozet Islands Pintail Anas eatoni drygalskii

Colombian Andean Duck Oxyura ferruginea andina



Recherche Cape Barren Goose Cereopsis novaehollandiae grisea

Middendorf's Bean Goose Anser fabalis middendorffi

Thick-billed Bean Goose Anser serrirostris serrirostris

Tule Greater White-fronted Goose Anser albifrons elgasi

Dusky Canada Goose Branta canadensis occidentalis

Peruvian Torrent Duck Merganetta armata leucogenis

Colombian Torrent Duck Merganetta armata colombiana

Australian Cotton Pygmy Goose Nettapus coromandelianus albipennis

Merida Teal Anas andium altipetens

Kerguelen Pintail Anas eatoni eatoni


Near Threatened

Florida Mottled Duck Anas fulvigula fulvigula

Australian Black Duck Anas superciliosa rogersi

Lesser Grey Duck Anas superciliosa pelewensis

Andean Teal Anas andium andium

South Georgia Pintail Anas georgica georgica
South American Pochard Netta erythropthalma erythropthalma

Pacific Eider Somateria mollissima v-nigrum


Least concern

(only those species that were previously listed in a higher category are shown here)

Stejneger’s Scoter Melanitta stejnegeri  (in last TWSG list as Asiatic White-winged Scoter Melanitta fusca deglandi)



Extinct since AD 1600

Not evaluated


Critically Endangered

Ruddy-headed Goose Chloephaga rubidiceps Mainland South America






Black-necked Swan Cygnus melanocorypha Falkland Islands

Comb Duck Sarkidiornis melanotus S/SE Asia
Chiloe Wigeon Anas sibilatrix Falkland Islands

Harlequin Duck Histrionicus histrionicus Atlantic Basin

Barrow’s Goldeneye Bucephala islandica Iceland (population in recent review is stable)


Near Threatened

Fulvous Whistling Duck Dendrocygna bicolor S Asia

Brent Goose Branta bernicla Parry Islands/Puget Sound

Yellow-billed Pintail Anas georgica Falkland Islands
Silver Teal Anas versicolor Falkland Islands

Harlequin Duck Histrionicus histrionicus Pacific


Data deficient

Barrow’s Goldeneye Bucephala islandica Greenland/Eastern North America

Powered by liveSite Get your free site!