Data Zone
Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: http://www.aerc.eu/DOCS/Bird_taxa_of_the_WP15.xls.
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| 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 |
| 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) | 17,800,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 15,000,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 1200000 mature individuals | medium | inferred | 2018 |
| Population trend | increasing | - | inferred | - |
| Generation length | 6.1 years | - | - | - |
Population justification: The global population is inferred to number 1,200,000 mature individuals and is increasing (Meehan et al. 2018, Pardieck et al. 2018, Partners in Flight 2020).
Trend justification: The population is increasing (Meehan et al. 2018, Pardieck et al. 2018, Partners in Flight 2020).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Bahamas | extant | native | yes | |||
| Barbados | extant | vagrant | ||||
| Belize | extant | vagrant | ||||
| Bermuda (to UK) | extant | vagrant | ||||
| Canada | extant | native | yes | yes | yes | |
| Cayman Islands (to UK) | extant | vagrant | ||||
| Costa Rica | extant | vagrant | ||||
| Cuba | extant | native | yes | |||
| El Salvador | extant | vagrant | ||||
| Greenland (to Denmark) | extant | vagrant | ||||
| Guam (to USA) | extant | vagrant | ||||
| Guatemala | extant | native | yes | |||
| Haiti | extant | vagrant | ||||
| Honduras | extant | vagrant | ||||
| Jamaica | extant | vagrant | ||||
| Japan | extant | vagrant | ||||
| Mexico | extant | native | yes | yes | ||
| Nicaragua | extant | vagrant | ||||
| St Pierre and Miquelon (to France) | extant | vagrant | ||||
| Turks and Caicos Islands (to UK) | extant | native | yes | |||
| United Kingdom | extant | vagrant | ||||
| USA | extant | native | yes | yes | yes | yes |
| Country/Territory | IBA Name |
|---|---|
| Canada | Cumberland Marshes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Intertidal | Salt Marshes (Emergent Grasses) | major | non-breeding |
| Marine Neritic | Estuaries | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | major | breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Altitude | Occasional altitudinal limits |
| Purpose | Scale |
|---|---|
| Pets/display animals, horticulture | international |
| Sport hunting/specimen collecting | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Redhead Aythya americana. Downloaded from
https://datazone.birdlife.org/species/factsheet/redhead-aythya-americana 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.