Data Zone
Taxonomic note
Common Teal Anas crecca (del Hoyo et al. 2014) has been split into Common Teal A. crecca and Green-winged Teal A. carolinensis (Handbook of the Birds of the World and BirdLife International 2020).
This change follows a revision to the scoring of the males' vertical white breast-side line, due to its role as a signal in display. As such the revised scoring is as follows: male A. carolinensis differs from A. crecca male in its vertical white breast-side line, replicated on rear flank (3), lack of white horizontal scapular stripe (2), and lack of narrow buff supercilium (above broad green “eyestripe”) (1); various other very minor differences cannot be scored (plumage characters capped at three), differences in measurements do not exist, behavioural differences are matters of frequency rather than type, and genetic evidence, while suggesting paraphyly involving A. flavirostris, indicates that hybridization is relatively widespread in Beringia (allow 1 for broad hybrid zone), indicating that carolinensis does warrant species status.
Aleutian race nimia remains treated as a synonym of a monotyic A. crecca.
Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2020. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 5. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2020 | Least Concern | |
| 2016 | Not Recognised | |
| 2012 | Not Recognised | |
| 2008 | Not Recognised | |
| 2005 | Not Recognised | |
| 2004 | Least Concern | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| 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) | 19,100,000 km2 | |
| Extent of Occurrence (non-breeding) | 18,800,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 3900000 mature individuals | poor | estimated | 2019 |
| Population trend | increasing | - | inferred | - |
| Generation length | 3.7 years | - | - | - |
Population justification: The global population is estimated at 3,900,000 mature individuals (Partners in Flight 2019).
Trend justification: The species is undergoing a large, significant increase (Pardieck et al. 2018, Partners in Flight 2019).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Anguilla (to UK) | extant | native | yes | |||
| Antigua and Barbuda | extant | native | yes | |||
| Barbados | extant | native | yes | |||
| Belize | extant | vagrant | yes | |||
| Canada | extant | native | yes | yes | ||
| Colombia | extant | vagrant | yes | |||
| Costa Rica | extant | vagrant | yes | |||
| Cuba | extant | native | yes | |||
| Dominica | extant | native | yes | |||
| Dominican Republic | extant | native | yes | |||
| El Salvador | extant | vagrant | yes | |||
| Greenland (to Denmark) | extant | vagrant | ||||
| Guadeloupe (to France) | extant | native | yes | |||
| Guatemala | extant | vagrant | yes | |||
| Haiti | extant | native | yes | |||
| Honduras | extant | vagrant | yes | |||
| Jamaica | extant | native | yes | |||
| Martinique (to France) | extant | native | yes | |||
| Mexico | extant | native | yes | |||
| Montserrat (to UK) | extant | native | yes | |||
| Puerto Rico (to USA) | extant | native | yes | |||
| Spain | extant | vagrant | yes | |||
| St Kitts and Nevis | extant | native | yes | |||
| St Lucia | extant | native | yes | |||
| St Pierre and Miquelon (to France) | extant | native | yes | |||
| St Vincent and the Grenadines | extant | native | yes | |||
| Trinidad and Tobago | extant | native | yes | |||
| USA | extant | native | yes | yes | yes | |
| Virgin Islands (to UK) | extant | native | yes | |||
| Virgin Islands (to USA) | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| USA | Bear River Bay UT02 |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Ponds (below 8ha) | suitable | breeding |
| Forest | Boreal | suitable | breeding |
| Marine Coastal/Supratidal | Coastal Freshwater Lakes | suitable | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | non-breeding |
| Shrubland | Boreal | suitable | breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | major | breeding |
| Wetlands (inland) | Permanent Inland Deltas | suitable | breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | breeding |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Lakes | suitable | non-breeding |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Marshes/Pools | suitable | non-breeding |
| Wetlands (inland) | Tundra Wetlands (incl. pools and temporary waters from snowmelt) | major | breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Green-winged Teal Anas carolinensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/green-winged-teal-anas-carolinensis on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 22/12/2024.