LC
Cinereous Harrier Circus cinereus



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) 9,470,000 medium
Extent of Occurrence non-breeding (km2) 12,600,000 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 Decreasing 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) 7.8 - - -

Trend justification: The population is suspected to be declining locally owing to habitat destruction ,shooting, drainage of wetlands, and over-use of pesticides (Ferguson-Lees and Christie 2001).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant
Bolivia N Extant
Brazil N Extant
Chile N Extant
Colombia N Extant
Ecuador N Extant
Falkland Islands (Malvinas) N Extant
Paraguay N Extant
Peru N Extant
South Georgia & the South Sandwich Islands U Extant
Uruguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Reserva de Biosfera de Ñacuñan
Argentina Parque Nacional Lanín
Argentina Parque Nacional Laguna Blanca
Argentina Laguna de Varvarco Campos y Tapia
Argentina Reserva Provincial Lagunas de Epulaufquen
Argentina Reserva Provincial Tromen
Argentina Area Natural Protegida Auca Mahuida
Argentina Paso de los Indios
Argentina Area Natural Protegida El Mangrullo
Argentina Valle del Río Collón Curá
Argentina Parque Provincial Copahue-Caviahue
Argentina Aluminé-Moquehue
Argentina Desembocadura del Río Gallegos
Argentina Estuario del Río Coyle
Argentina La Angostura y Alto Río Chico
Argentina Monumento Natural Bosques Petrificados y Estancia El Cuadro
Argentina Parque Nacional Perito Moreno y Reserva Provincial San Lorenzo
Argentina Meseta Lago Buenos Aires
Argentina El Zurdo
Argentina Laguna Nimez y costa aledaña del Lago Argentino
Argentina Meseta del Asador (o Aguila)
Argentina Estancia El Cóndor
Argentina Península y Bahía de San Julián
Argentina Reserva Costa Atlántica de Tierra del Fuego y zonas adyacentes
Argentina Península Mitre
Argentina Parque Nacional Tierra del Fuego y Reserva Provincial Corazón de la Isla
Argentina Caldenal del Sudoeste de Buenos Aires
Argentina Estepas arbustivas del Sur de Buenos Aires

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable non-breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable breeding
Grassland Subtropical/Tropical High Altitude suitable non-breeding
Grassland Subtropical/Tropical High Altitude suitable breeding
Grassland Temperate major breeding
Grassland Temperate major non-breeding
Shrubland Subtropical/Tropical High Altitude suitable breeding
Shrubland Subtropical/Tropical High Altitude suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Altitude 0 - 4500 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Circus cinereus. Downloaded from http://www.birdlife.org on 03/07/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/07/2022.