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Wedge-tailed Hillstar Oreotrochilus adela

Justification
This species has a moderately small global population which is suspected to be declining moderately rapidly owing to habitat loss and within which all subpopulations are small. It is consequently classified as Near Threatened.

Taxonomic source(s)
SACC. 2006. A classification of the bird species of South America. Available at: http://www.museum.lsu.edu/~Remsen/SACCBaseline.html.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

Distribution and population
Oreotrochilus adela has a restricted range in the high Andes of La Paz, Cochabamba, Potosí and Chuquisaca, south-west Bolivia (Armonía 1995). There are also reports of breeding birds from Argentina.

Population justification
The population is preliminarily estimated to number at least 10,000 individuals, roughly equating to 6,700 mature individuals. This requires confirmation.

Trend justification
The population is suspected to be in decline owing to habitat degradation and destruction.

Ecology
It inhabits arid montane scrub, Polylepis forest and disturbed habitats at 2,550-4,000 m (Fjeldså and Krabbe 1990, Armonía 1995, Parker et al. 1996).

Threats
The main threats are heavy grazing by livestock and the uncontrolled use of fire, which combine to prevent Polylepis regeneration, especially where cutting for timber, firewood and charcoal occurs (Fjeldså and Kessler 1996). The change from camelid to sheep and cattle farming, erosion and soil degradation caused by agricultural intensification and afforestation, especially where exotic tree species (e.g. Eucalyptus) are planted (Fjeldså and Kessler 1996), are contributory factors.

Conservation Actions Underway
CITES Appendix II. Conservation Actions Proposed
Establish adequate protected areas to protect the species's core range. Monitor population at strongholds and search for the species in potentially suitable habitat at new sites. Study its ecology and its ability to persist in degraded and fragmented habitats. Attempt to obtain an accurate estimate of its population size and trends. Quantify extent of habitat losses.

References
Armonía. 1995. Lista de las aves de Bolivia. Armonía, Santa Cruz de la Sierra.

Fjeldså, J.; Kessler, M. 1996. Conserving the biological diversity of Polylepis woodlands of the highland of Peru and Bolivia. NORDECO, Copenhagen.

Fjeldså, J.; Krabbe, N. 1990. Birds of the high Andes. Apollo Books, Copenhagen.

Parker, T. A.; Stotz, D. F.; Fitzpatrick, J. W. 1996. Ecological and distributional databases. In: Stotz, D.F.; Fitzpatrick, J.W.; Parker, T.A.; Moskovits, D.K. (ed.), Neotropical bird ecology and conservation, pp. 113-436. University of Chicago Press, Chicago.

Text account compilers
Benstead, P., Capper, D., Sharpe, C J, Symes, A.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Oreotrochilus adela. Downloaded from http://www.birdlife.org on 21/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/04/2014.

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 Trochilidae (Hummingbirds)
Species name author (d'Orbigny & Lafresnaye, 1838)
Population size 6700 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 50,600 km2
Country endemic? No
Links to further information
- Additional Information on this species