Rhea pennata

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES Struthioniformes Rheidae

Scientific Name: Rhea pennata
Species Authority: (d'Orbigny, 1834)
Common Name/s:
English Lesser Rhea, Darwin's Rhea
Spanish Avestruz De Magallanes, Ñandú Cordillerano, Ñandú Petizo
Synonym/s:
Pterocnemia pennata d'Orbigny, 1834
Taxonomic Notes: Pterocnemia pennata (Sibley and Monroe 1990, 1993) was provisionally split into P. pennata and P. tarapacensis by Stotz et al. (1996) but this treatment has not been adopted, following SACC (2005).

Assessment Information [top]

Red List Category & Criteria: Near Threatened     ver 3.1
Year Assessed: 2008
Assessor/s BirdLife International
Evaluator/s: Butchart, S. & Symes, A. (BirdLife International Red List Authority)
Justification:
This species qualifies as Near Threatened as declines in its population are suspected to approach the threshold for classification as Vulnerable.

History:
2004 Near Threatened
2000 Lower Risk/near threatened
1994 Lower Risk/near threatened
1988 Near Threatened

Geographic Range [top]

Range Description: Rhea pennata occurs in three subspecies: pennata in south Chile, west-central and south Argentina, with an introduced population in north Tierra del Fuego; tarapacensis in north Chile; and garleppi in south Peru, south-west Bolivia and north-west Argentina. The nominate subspecies inhabits shrub-steppe and grassland of floodplains, up to 1,500 m, generally breeding in upland areas with bunch-grass. The northern subspecies are found in desertic salt puna, pumice flats, upland bogs and tola (Lepidophyllum) heath in altiplano at 3,000-4,500 m, down to 1,500 m in the south. All populations have declined markedly and the northern subspecies are in serious danger of extinction2. The combined population of tarapacensis and garleppi is estimated at several hundred birds, with the healthiest populations in Argentina (densities at two sites of 2-5 birds/km2)1. In 1983, the Peruvian population was estimated at 18 individuals, with very low numbers in north Chile (principally in Lauca National Park3) and on the altiplano in Bolivia. There is still extensive persecution, particularly around Andean mining centres, and egg-collection by Aymará Indians1. In the northern part of its range, it is hunted for meat and feathers and, in some areas, immature individuals are domesticated and bred4,5,6. The principal threat to pennata is habitat conversion to farmland or pastures for cattle-grazing2. CITES Appendix I (except nominate race, which is on Appendix II).

Countries:
Native:
Argentina; Bolivia; Chile; Peru

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Systems: Terrestrial
Citation: BirdLife International 2008. Rhea pennata. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.3. <www.iucnredlist.org>. Downloaded on 09 September 2010.
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