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Greater Rhea Rhea americana

IUCN Red List Criteria

Near Threatened (criteria nearly met) A2cd+3cd+4cd 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
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 continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 6,540,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals Unknown not applicable Not Applicable 0
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
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 Breeding Non-breeding Passage Resident
Argentina Native Extant       Yes
Bolivia Native Extant       Yes
Brazil Native Extant       Yes
Paraguay Native Extant       Yes
Uruguay Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

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

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 / Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species mortality

Utilisation

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

Recommended citation
BirdLife International (2014) Species factsheet: Rhea americana. Downloaded from http://www.birdlife.org on 23/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Near Threatened
Family Rheidae (Rheas)
Species name author (Linnaeus, 1758)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 6,540,000 km2
Country endemic? No
Links to further information
- Summary information on this species