Blue-winged Teal Spatula discors


Taxonomic note
Spatula discors (del Hoyo and Collar 2014) was previously placed in the genus Anas.

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #

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) 16,800,000 medium
Extent of Occurrence non-breeding (km2) 24,700,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 7800000 medium inferred 2018
Population trend Increasing inferred -
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) 3.6 - - -

Population justification: The global population is inferred to number 7,800,000 mature individuals and is increasing (Zimpfer et al. 2011, Partners in Flight 2020, Wetlands International 2020).

Trend justification: The population is estimated to be increasing (Zimpfer et al. 2011, Partners in Flight 2020, Wetlands International 2020).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Algeria V Extant
Anguilla (to UK) N Extant Yes
Antigua and Barbuda N Extant Yes
Argentina V Extant
Aruba (to Netherlands) N Extant Yes
Austria V Extant
Bahamas N Extant Yes
Barbados N Extant Yes
Belgium V Extant
Belize N Extant Yes
Bermuda (to UK) N Extant Yes
Bolivia V Extant
Bonaire, Sint Eustatius and Saba (to Netherlands) N Extant Yes
Brazil N Extant Yes
Canada N Extant Yes
Cayman Islands (to UK) N Extant Yes
Chile V Extant
Colombia N Extant Yes
Costa Rica N Extant Yes
Cuba N Extant Yes
Curaçao (to Netherlands) N Extant Yes
Czechia V Extant
Denmark V Extant
Dominica N Extant Yes
Dominican Republic N Extant Yes
Ecuador N Extant Yes
Egypt V Extant
El Salvador N Extant Yes
Faroe Islands (to Denmark) V Extant
Finland V Extant
France V Extant
French Guiana N Extant Yes
Germany V Extant
Greece V Extant
Greenland (to Denmark) V Extant
Grenada N Extant Yes
Guadeloupe (to France) N Extant Yes
Guatemala N Extant Yes
Guyana N Extant Yes
Haiti N Extant Yes
Honduras N Extant Yes
Iceland V Extant
Ireland V Extant
Italy V Extant
Jamaica N Extant Yes
Martinique (to France) N Extant Yes
Mexico N Extant Yes Yes
Montserrat (to UK) N Extant Yes
Morocco V Extant
Netherlands V Extant
Nicaragua N Extant Yes
Norway V Extant
Panama N Extant Yes
Paraguay V Extant Yes
Peru N Extant Yes
Poland V Extant
Portugal V Extant
Puerto Rico (to USA) N Extant Yes
Senegal V Extant
Sint Maarten (to Netherlands) N Extant Yes
South Georgia & the South Sandwich Islands V Extant
Spain V Extant
St Barthelemy (to France) N Extant Yes
St Kitts and Nevis N Extant Yes
St Lucia N Extant Yes
St Martin (to France) N Extant Yes
St Pierre and Miquelon (to France) N Extant Yes
St Vincent and the Grenadines N Extant Yes
Suriname N Extant Yes
Sweden V Extant
Switzerland V Extant
Trinidad and Tobago N Extant Yes
Turks and Caicos Islands (to UK) N Extant Yes
United Kingdom V Extant
Uruguay V Extant
USA N Extant Yes Yes Yes
Venezuela N Extant Yes
Virgin Islands (to UK) N Extant Yes
Virgin Islands (to USA) N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Reserva Natural Laguna de Sonso
Jamaica Yallahs
Jamaica Black River Great Morass
Colombia Haciendas Ganaderas del Norte del Cauca
Venezuela Reserva de Fauna Silvestre Tucurere
Cuba Humedal Sur de Sancti Spiritus
Cuba Delta del Cauto
Bahamas Harrold and Wilson Ponds National Park
Bahamas Great Inagua
Bahamas Grog Pond
Bahamas Lucayan National Park
Canada Netley-Libau Marsh
Canada Oak Lake/Plum Lakes Area
Canada Whitewater Lake
Canada Proven Lake WMA
Canada Langruth - Rm of Lakeview
Canada North, West, and East Shoal Lakes
Canada Grant's Lake WMA
Canada Codroy Valley Estuary
Canada Dundas Valley and Dundas Marsh
Canada Île de l'Est
Canada Marais de Saint-Timothée
Canada Canal de Beauharnois
St Vincent and the Grenadines Ashton Wetland
St Vincent and the Grenadines Mustique Island
Bahamas San Andros Pond
Bahamas Booby Rocks and Pirates Bay
Bahamas Southern Great Lake
Bahamas South Beach Tidal Flats
Bahamas Stafford Creek to Andros Town
Dominican Republic Cabral Lagoon
Dominican Republic Limón Lagoon
Nicaragua Tisma Lagoon
Belize Belize Off-shore and Barrier Islands
Belize Rio Bravo CMA Gallon Jug Estate
Belize Northeastern Belize
Belize Crooked Tree and associated wetlands
Belize Belize Coastal and near shore islands
Aruba (to Netherlands) Tierra del Sol Salina
Aruba (to Netherlands) Bubali Wetlands
Antigua and Barbuda McKinnons Salt Pond
Antigua and Barbuda Valley Church Bay
Cuba Cayo Sabinal, Ballenatos y Manglares de la Bahía de Nuevitas
Cuba Humedal Sur de Pinar del Río
El Salvador Cerrón Grande
Barbados East Point Pond
St Lucia Point Sables
St Lucia Iyanola and Grande Anses, Esperance and Fond D'ors
Puerto Rico (to USA) Sierra Bermeja and Laguna Cartagena
Virgin Islands (to USA) Great Pond
Virgin Islands (to USA) Southgate and Green Cay
Puerto Rico (to USA) Guaniquilla and Boquerón
Cayman Islands (to UK) Central Mangrove Wetland
Cayman Islands (to UK) Crown Wetlands
Virgin Islands (to UK) Anegada: Western salt ponds and coastal areas
Venezuela Refugio de Fauna Silvestre Cuare
Bahamas Conception Island National Park
Cuba Delta del Mayarí
Mexico Pantanos de Centla
Colombia Ciénaga Grande, Isla de Salamanca and Sabana Grande RAMSAR biosphere reserve
St Kitts and Nevis Ponds of the Southeast Peninsula
Colombia Complejo de Humedales Costeros de la Guajira
Dominican Republic Jaragua National Park
Mexico Subcuenca Tecocomulco
Colombia El Encanto de Guanapalo
Mexico Islas de la Sonda de Campeche
Mexico Presa Temascal
Ecuador Ciénaga de La Segua
Colombia La Aurora
Colombia Laguna de la Cocha
Colombia Riberas de la Cuenca Baja del Río Inírida

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Grassland Temperate suitable breeding
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
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable 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
Sport hunting/specimen collecting - - Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Spatula discors. Downloaded from on 07/07/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 07/07/2022.