Taxonomic source(s)
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) | 6,220,000 | medium |
Extent of Occurrence non-breeding (km2) | 2,000,000 | medium |
Number of locations | - | |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 7300-14000 | 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 | - | - | - | |
Percentage in largest subpopulation | - | - | - | |
Generation length (yrs) | 8 | - | - | - |
Population justification: The population is estimated to number 11,000-21,000 individuals, roughly equating to 7,300-14,000 mature individuals.
Trend justification: This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (data for Aechmophorus occidentalis and A. clarkii combined, from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Canada | N | Extant | Yes | |||
Mexico | N | Extant | ||||
USA | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Canada | Last Mountain Lake National Wildlife Area |
Canada | Valeport Marsh |
Mexico | Ciénega de Tláhuac |
Mexico | Cuitzeo |
USA | Bill Williams River National Wildlife Refuge |
Mexico | Complejo Lagunar Ojo de Liebre |
Mexico | Lago de Chapala |
Mexico | Subcuenca Tecocomulco |
Mexico | Complejo de Humedales del Noroeste de Chihuahua |
Mexico | Presa Laguna de Zumpango |
Mexico | Lago de Texcoco |
Mexico | Ciénegas del Lerma |
Mexico | Laguna de Bustillos |
Mexico | Santiaguillo |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | major | breeding |
Altitude | 750 - 2500 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2023) Species factsheet: Aechmophorus clarkii. Downloaded from
http://www.birdlife.org on 03/02/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 03/02/2023.