NT
Greater Rhea Rhea americana



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 Near Threatened A2cd+3cd+4cd
2012 Near Threatened A2cd+3cd+4cd
2008 Near Threatened A2c,d; A3c,d; A4c,d
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,420,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing poor 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) 20-29 - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 10.5 - - -

Population justification: The global population size has not been quantified, but this species is described as 'uncommon to fairly common' (Stotz et al. 1996).

Trend justification: A moderately rapid and on-going population decline is suspected, owing to hunting for the species's skin and meat as well as the destruction and fragmentation of its habitat.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Bolivia N Extant Yes
Brazil N Extant Yes
Paraguay N Extant Yes
Uruguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Area Natural Protegida El Mangrullo
Argentina Bahía de Samborombón y Punta Rasa
Argentina Bajos Submeridionales
Argentina Bañado de Añatuya
Argentina Bañado La Estrella Este
Argentina Bañado La Estrella Oeste
Argentina Bañados de Figueroa
Argentina Bañados del Quirquincho
Argentina Bañados del Río Atuel
Argentina Bañados del Río Saladillo
Argentina Bañados del Utis
Argentina Barra Concepción
Argentina Caldenal del Sudoeste de Buenos Aires
Argentina Campo San Juan
Argentina Ceibas
Argentina Chaco de Tartagal
Argentina Chaguaral
Argentina Chancaní y Sierras de Pocho
Argentina Concepción-Chavarría
Argentina Cuenca del río Aguapey
Argentina Cuenca del Río Salado
Argentina Cuña boscosa de Santa Fe
Argentina Dorso Occidental Subhúmedo de Santa Fe
Argentina El Cachapé
Argentina El Cantor
Argentina Espinal de Mercedes
Argentina Estancia Guaycolec
Argentina Estancia La Alegría
Argentina Estancia La Leonor
Argentina Estancia Medaland
Argentina Estancia Puerto Valle
Argentina Estancia San Ignacio
Argentina Estancia San Juan Poriahú
Argentina Estepas arbustivas del Sur de Buenos Aires
Argentina Estero Tapenagá
Argentina Extremo noreste de Corrientes
Argentina Felipe Yofre
Argentina Fortín Sargento Primero Leyes
Argentina Jaaukanigás
Argentina Jagüel del Monte
Argentina La Fidelidad
Argentina Lagunas de Guanacache
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires
Argentina Loma Alta
Argentina Lomas de Olmedo
Argentina Lotes 32 y 33, Maíz Gordo
Argentina Misión Taacaglé
Argentina Nacientes de los riachos Monte Lindo y Tatú Piré
Argentina Nandubaysal-El Potrero
Argentina Parque Costero del Sur
Argentina Parque Nacional Chaco
Argentina Parque Nacional Copo
Argentina Parque Nacional El Palmar
Argentina Parque Nacional El Rey
Argentina Parque Nacional Lihue Calel
Argentina Parque Nacional Mburucuyá
Argentina Parque Nacional Río Pilcomayo
Argentina Parque Nacional Talampaya
Argentina Parque Provincial Fuerte Esperanza
Argentina Parque Provincial Pampa del Indio
Argentina Pastizales de Ibicuy
Argentina Pastizales de La Travesía y Buena Esperanza
Argentina Perdices
Argentina Pilagás III
Argentina Región Estancia Oscuro
Argentina Reserva Campos del Tuyú, Estancia El Palenque y Los Ingleses
Argentina Reserva de Biosfera Albufera de Mar Chiquita
Argentina Reserva de Biosfera de Ñacuñan
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita
Argentina Reserva El Bagual
Argentina Reserva Natural Formosa
Argentina Reserva Natural Loro Hablador
Argentina Reserva Natural Rincón de Santa María
Argentina Reserva Provincial de Usos Múltiples Federico Wildermuth
Argentina Reserva Provincial Florística y Faunística Bosques Teltecas
Argentina Reserva Provincial Parque Luro
Argentina Rincón del Socorro-Iberá
Argentina Río Bermejito
Argentina Salinas de Ambargasta
Argentina Salinas Grandes
Argentina Salta Forestal
Argentina San Antonio Oeste
Argentina San Javier
Argentina Selva de Montiel
Argentina Sierras Australes de Buenos Aires
Argentina Sierras del Norte Cordobés
Argentina Valle del río Paraguay-Paraná
Argentina Valle Fluvial del Río Paraguay
Argentina Victorica
Argentina Villa Iris, Chasicó, Napostá
Argentina Villa marítima El Cóndor
Bolivia Área Natural de Manejo Integrado San Matías
Bolivia Beni Biological Station Biosphere Reserve
Bolivia Este de Río Mamoré
Bolivia KAA-IYA del Gran Chaco
Bolivia Lagunas Rogaguado y Ginebra
Bolivia Loreto
Bolivia Noel Kempff Mercado
Bolivia Oeste de Río Mamoré
Bolivia Otuquis Integrated Management Natural Area
Bolivia Palmar de las Islas
Bolivia Reserva de Inmovilización Iténez
Brazil Alto Rio Juruena
Brazil Banhado dos Pachecos
Brazil Banhado São Donato
Brazil Barragem de Boa Esperança
Brazil Caceres
Brazil Campos da Região de Bagé
Brazil Campos do Encanto
Brazil Campos do Planalto das Araucárias
Brazil Cerrados ao Sul de Brasília
Brazil Cerrados do Nordeste de Tocantins
Brazil Curaçá
Brazil Estação Ecológica de Uruçuí-Una
Brazil Formoso do Araguaia
Brazil Interflúvio dos Rios das Mortes e Araguaia
Brazil Itirapina
Brazil Jaguariaíva
Brazil Jalapão
Brazil Lizarda
Brazil Maciço do Urucum e Adjacências
Brazil Matas Ciliares do Rio do Coco e Afluentes
Brazil Monumento Natural das Árvores Fossilizadas e Adjacências
Brazil Nhumirim
Brazil Pantanal de Nabileque
Brazil Parque Estadual do Morro do Chapéu
Brazil Parque Nacional da Chapada dos Guimarães e Adjacências
Brazil Parque Nacional da Chapada dos Veadeiros e Adjacências
Brazil Parque Nacional da Serra da Bodoquena e Entorno
Brazil Parque Nacional da Serra da Capivara
Brazil Parque Nacional das Emas
Brazil Parque Nacional de Brasília
Brazil Raso da Catarina
Brazil Reserva Particular do Patrimônio Natural SESC Pantanal e Entorno
Brazil Rios Negro e Aquidauana
Brazil Serra da Canastra
Brazil Serra do Gado Bravo e entorno
Brazil Terra Ronca
Brazil Tirecatinga / Utiariti
Brazil Várzea do Canal São Gonçalo
Paraguay Estancia Estrella
Paraguay Estancia Gran Siete
Paraguay Estancias Golondrina - El Trébol
Paraguay Fortín Toledo
Paraguay Laguna Ganzo
Paraguay Lagunas Saladas - Riacho Yacaré
Paraguay Morombi
Paraguay Parque Nacional Defensores del Chaco
Paraguay Parque Nacional Médanos del Chaco
Paraguay Parque Nacional Tinfunqué - Estero Patiño
Paraguay Paso Curuzú
Paraguay Pozo Hondo
Paraguay Ypané Medio
Uruguay Castillos Lagoon

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical Seasonally Wet/Flooded marginal resident
Grassland Temperate marginal resident
Savanna Dry major resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 1200 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines
Stresses
Species mortality

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Non-trivial Recent
Food (human) Whole Adults and juveniles Wild International Non-trivial Recent
Handicrafts, jewellery, decorations, curios Whole Adults and juveniles Wild Non-trivial Historical
Handicrafts, jewellery, decorations, curios Whole Adults and juveniles Wild International Non-trivial Historical
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Wearing apparel, accessories Whole Adults and juveniles Wild Non-trivial Historical
Wearing apparel, accessories Whole Adults and juveniles Wild International Non-trivial Historical

Recommended citation
BirdLife International (2019) Species factsheet: Rhea americana. Downloaded from http://www.birdlife.org on 23/08/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/08/2019.