LC
Black-necked Swan Cygnus melancoryphus



Taxonomy

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.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
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
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,770,000 medium
Extent of Occurrence non-breeding (km2) 6,050,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Stable suspected -
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) 12.6 - - -

Trend justification: The overall population trend is stable, although some populations have unknown trends (Wetlands International 2006).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Antarctica V Extant
Argentina N Extant
Brazil N Extant
Chile N Extant
Falkland Islands (Malvinas) N Extant
Uruguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Uruguay Castillos Lagoon
Uruguay Rocha Lagoon
Uruguay Eastern Wetlands
Argentina Reserva de Biosfera Albufera de Mar Chiquita
Argentina Reserva Provincial Laguna Salada Grande
Brazil Banhado do Taim
Chile Lago Lanalhue
Argentina Lagunas del suroeste y relictos del Caldenal
Chile Desembocadura del Río Cahuil
Chile Humedal El Yali
Chile Santuario de la Naturaleza Carlos Anwandter, Sector Guacamayo y otros Sectores Aledaños
Chile Lago Budi
Chile Puerto Natales
Chile Sistema de Bahías TenTen Castro
Chile Laguna Grande de San Pedro de la Paz y Humedal Los Batros
Chile Bahía Curaco de Vélez
Chile Quemchi Aucar
Chile Estero Compu
Chile Estero Huildad
Chile Bahía de Quellón
Chile Bahía de Yaldad
Chile Bahía de Chullec
Chile Reserva Nacional Laguna Torca
Chile Sitio Prioritario Humedal de Tilicura
Chile Santuario de las Aves Bahía de Caulín
Chile Desembocadura del Río Chamiza,Coihuin-Pelluco
Chile Bahía de Putemun
Chile Bahía Chilota, Porvenir
Chile Ciénagas del Name
Chile Lago Vichuquén
Chile Chacao
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes 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) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major non-breeding
Altitude 0 - 1200 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2021) Species factsheet: Cygnus melancoryphus. Downloaded from http://www.birdlife.org on 22/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/10/2021.