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#.
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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 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 (km2) | 10,500,000 | medium |
| Extent of Occurrence non-breeding (km2) | 12,400,000 | medium |
| Number of locations | - | |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | estimated | 2009 | |
| Population trend | Decreasing | estimated | - | |
| 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 | - | - | - | |
| Largest subpopulations | - | - | - | |
| Generation length (yrs) | 8.2 | - | - | - |
Trend justification: This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Antigua and Barbuda | V | Extant | ||||
| Bahamas | V | Extant | ||||
| Bermuda (to UK) | N | Extant | ||||
| Canada | N | Extant | Yes | Yes | ||
| Cuba | N | Extant | ||||
| French Polynesia | V | Extant | ||||
| Guatemala | N | Extant | ||||
| Honduras | N | Extant | ||||
| Jamaica | V | Extant | ||||
| Japan | V | Extant | ||||
| Marshall Islands | V | Extant | ||||
| Mexico | N | Extant | ||||
| Puerto Rico (to USA) | N | Extant | ||||
| South Korea | V | Extant | ||||
| St Pierre and Miquelon (to France) | V | Extant | Yes | Yes | ||
| United Kingdom | V | Extant | ||||
| USA | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Canada | Beaver Lake |
| Canada | Cumberland Marshes |
| Canada | Long Point Peninsula and Marshes |
| Canada | Lower Detroit River |
| Canada | Niagara River Corridor |
| Canada | Old Wives-Frederick Lakes |
| Canada | Wolfe Island |
| USA | Active Delta (Mississippi River Birdsfoot Delta) |
| USA | Atchafalaya Delta |
| USA | Catahoula-Dewey Wills-Three Rivers |
| USA | Detroit River |
| USA | Eastern Neck National Wildlife Refuge |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | 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) | major | breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2020) Species factsheet: Aythya valisineria. Downloaded from
http://www.birdlife.org on 22/01/2020.
Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/01/2020.
