American Black Duck Anas rubripes


Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: # _the_WP15.xls#.
Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2021 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 7,030,000 medium
Extent of Occurrence non-breeding (km2) 5,480,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 700000 poor estimated 2018
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 6.01 - - -

Population justification: The global population is estimated to number 700,000 mature individuals (Partners in Flight 2020).

Trend justification: The species has been undergoing a moderate decline at an average rate of 1% per year between 1970 and 2017 (Partners in Flight 2020). Short-term trends are inconclusive however, as it appears that the trend is stabilising in recent years or even increasing (Meehan et al. 2018; Pardieck et al. 2018). Until detailed data becomes available, the species is here precautionarily assessed as being in slow decline.

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bahamas V Extant
Bermuda (to UK) N Extant Yes
Canada N Extant Yes Yes Yes
Denmark V Extant
Guadeloupe (to France) V Extant Yes
Ireland V Extant
Martinique (to France) V Extant
Mexico N Extant Yes
Morocco V Extant
Norway V Extant
Portugal V Extant
Puerto Rico (to USA) V Extant
Spain V Extant
St Pierre and Miquelon (to France) N Extant Yes
Sweden V Extant
Turks and Caicos Islands (to UK) V Extant
United Kingdom V Extant
USA N Extant Yes Yes Yes Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Canada Nelson River Estuary and Marsh Point
Canada Grand Manan Archipelago
Canada Tracadie Bay and Sandspit
Canada Miscou Island
Canada Quoddy Region
Canada Terra Nova National Park
Canada Quidi Vidi Lake
Canada Codroy Valley Estuary
Canada South Shore (Port Joli sector)
Canada Musquodoboit
Canada Northeast James Bay
Canada Boatswain Bay
Canada Long Point Peninsula and Marshes
Canada Aylmer Wildlife Management Area
Canada Pittock Reservoir
Canada Matchedash Bay
Canada Wolfe Island
Canada Wildwood Gull Roost
Canada Hannah Bay
Canada Netitishi Point
Canada Moose River Estuary
Canada Cap Tourmente
Canada Lagune du Havre aux Basques et plage de l'Ouest
Canada Île de l'Est
Canada Banc de Carleton
Canada Baie de Gaspé
Canada Îles Les Boules
Canada Marais de Pointe-au-Père
Canada Marais de la baie de L'Isle-Verte
Canada Marais de Gros-Cacouna
Canada Île aux Basques et Les Razades
Canada Île aux Pommes
Canada Îles Pèlerins
Canada Baie Comeau
Canada Baie des Escoumins et Grandes-Bergeronnes
Canada Tadoussac
Canada Marais de Saint-Fulgence
Canada Île Rouge
Canada Batture Batture aux Alouettes and mouth of Saguenay River
Canada Battures de Beauport and chenal de l'île d'Orléans
Canada Nicolet et Baie-du-Fèbvre
Canada Plaine inondable de Saint-Barthélemy
Canada Lac Boivin
Canada Île aux Hérons Migratory Bird Sanctuary
Canada Réserve faunique de Plaisance
Canada Northeast James Bay Coast
Canada Marais de Saint-Timothée
Canada Marais de Saint-Étienne
Canada Canal de Beauharnois
USA Montezuma Wetlands Complex
USA Lake Mattamuskeet - Swan Quarter
USA Delaware Bayshore Region
USA Southern Dorchester County

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable non-breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable non-breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Marine Neritic Estuaries suitable non-breeding
Marine Neritic Macroalgal/Kelp suitable non-breeding
Marine Neritic Seagrass (Submerged) suitable non-breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel suitable non-breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable non-breeding
Marine Neritic Subtidal Sandy suitable non-breeding
Marine Neritic Subtidal Sandy-Mud suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Lakes major breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools major breeding
Altitude   Occasional altitudinal limits  

Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Anas rubripes. Downloaded from on 30/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 30/06/2022.