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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://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
2024 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
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 3,770,000 km2 medium
Extent of Occurrence (non-breeding) 6,050,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 17300-67900 mature individuals poor estimated 2023
Population trend stable - suspected -
Generation length 8.79 years - - -

Population justification: The global population size is estimated at 25,900-101,800 individuals (Wetlands International 2023), which equates to 17,300-67,900 mature individuals. The overall population trend is considered to be stable over three generations (26.37 years) (Wetlands International 2023).

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Antarctica extant vagrant
Argentina extant native
Brazil extant native
Chile extant native
Falkland Islands (Malvinas) extant native
Uruguay extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Lagunas del suroeste y relictos del Caldenal
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires
Argentina Reserva Provincial Laguna Salada Grande
Chile Humedal El Yali
Chile Lago Lanalhue
Chile Puerto Natales
Chile Santuario de la Naturaleza Carlos Anwandter, Sector Guacamayo y otros Sectores Aledaños
Chile Santuario de las Aves Bahía de Caulín
Chile Sitio Prioritario Humedal de Tilicura
Uruguay Castillos Lagoon
Uruguay Rocha Lagoon

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable non-breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable 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 non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Altitude 0 - 1250 m Occasional altitudinal limits  

Utilisation
Purpose Scale
Food - human subsistence, national
Handicrafts, jewellery, etc. subsistence, national
Pets/display animals, horticulture international
Sport hunting/specimen collecting subsistence, national

Recommended citation
BirdLife International (2024) Species factsheet: Black-necked Swan Cygnus melancoryphus. Downloaded from https://datazone.birdlife.org/species/factsheet/black-necked-swan-cygnus-melancoryphus on 23/12/2024.
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 23/12/2024.