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Lesser Rhea Rhea pennata

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) 1,100,000 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) 11 - - -
Population justification: The global population size has not been quantified, but this species is described as 'uncommon' (Stotz et al. 1996).
Trend justification: A moderately rapid and on-going population decline is suspected, owing to habitat loss, hunting and egg collecting.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Argentina Native Extant      
Bolivia Native Extant      
Chile Native Extant      
Peru Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Argentina Area Natural Protegida Auca Mahuida site factsheet
Argentina Area Natural Protegida El Mangrullo site factsheet
Argentina Cabo Vírgenes site factsheet
Argentina Complejo Punta Tombo - Punta Atlas site factsheet
Argentina El Zurdo site factsheet
Argentina Estancia El Cóndor site factsheet
Argentina Estuario del Río Coyle site factsheet
Argentina Estuario del Río Gallegos site factsheet
Argentina Extensión Límite Este y Sur del Parque Nacional Nahuel Huapi site factsheet
Argentina La Angostura y Alto Río Chico site factsheet
Argentina Laguna Nimez y costa aledaña del Lago Argentino site factsheet
Argentina Lagunillas site factsheet
Argentina Llanos de Jagüé site factsheet
Argentina Meseta de Somuncura Provincial Natural Protected Area site factsheet
Argentina Meseta del Asador (o Aguila) site factsheet
Argentina Meseta Lago Buenos Aires site factsheet
Argentina Meseta Lago Strobel site factsheet
Argentina Monumento Natural Bosques Petrificados y Estancia El Cuadro site factsheet
Argentina Monumento Natural Laguna de Los Pozuelos site factsheet
Argentina Nahuel Huapi National Park and Reserve site factsheet
Argentina Norte del Golfo San Jorge site factsheet
Argentina Parque Nacional El Leoncito site factsheet
Argentina Parque Nacional Laguna Blanca site factsheet
Argentina Parque Nacional Los Glaciares y adyacencias (Estancias El Sosiego, La Soledad y Anita) site factsheet
Argentina Parque Nacional Monte León site factsheet
Argentina Parque Nacional Perito Moreno y Reserva Provincial San Lorenzo site factsheet
Argentina Parque Nacional Talampaya site factsheet
Argentina Paso de los Indios site factsheet
Argentina Península y Bahía de San Julián site factsheet
Argentina Reserva de la Biosfera Parque Nacional San Guillermo site factsheet
Argentina Reserva Provincial El Payén site factsheet
Argentina Reserva Provincial Laguna Brava site factsheet
Argentina Reserva Provincial Laguna de Llancanelo site factsheet
Argentina Reserva Provincial Olaroz-Cauchari site factsheet
Argentina Reserva Provincial y de la Biosfera Laguna Blanca site factsheet
Argentina San Antonio Oeste site factsheet
Argentina Sistema de lagunas de Vilama-Pululos site factsheet
Argentina Sistema Península de Valdés site factsheet
Argentina Socompá-Llullaillaco site factsheet
Argentina Valle del Río Collón Curá site factsheet
Bolivia Lago Poopó y Río Laka Jahuira site factsheet
Bolivia Lago Titicaca (Sector Boliviano) site factsheet
Bolivia Lagunas de Agua Dulce del Sureste de Potosí site factsheet
Bolivia Lagunas Salinas del Suroeste de Potosí site factsheet
Bolivia Parque nacional Sajama site factsheet
Chile Chacabuco Valley and Baker River Entrance site factsheet
Chile Coyahique Alto-Coite site factsheet
Chile Marisma Buque Quemado site factsheet
Chile Monumento Natural Salar de Surire site factsheet
Chile Parque Nacional Lauca site factsheet
Chile Parque Nacional Salar de Huasco site factsheet
Chile Parque Nacional Torres del Paine site factsheet
Chile Parque Nacional Volcán Isluga site factsheet
Chile Pingüinera del Seno Otway site factsheet
Chile Salar de Tara site factsheet
Peru Covire site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical High Altitude suitable resident
Grassland Temperate suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Wetlands (inland) Alpine Wetlands (includes temporary waters from snowmelt) suitable resident
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands marginal resident
Wetlands (inland) Permanent Saline, Brackish or Alkaline Lakes marginal resident
Altitude 0 - 4500 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:
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:
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
Pets Whole Adults and juveniles Wild International 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

Recommended citation
BirdLife International (2014) Species factsheet: Rhea pennata. Downloaded from http://www.birdlife.org on 24/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2014.

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 d'Orbigny, 1834
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,100,000 km2
Country endemic? No
Links to further information
- Summary information on this species