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Everett's Thrush Zoothera everetti

Justification
This species is listed as Near Threatened because there are some indications that it is thought to have a moderately small, fragmented population, and is undergoing a continuing decline owing to forest loss. However, little is currently known about the population size of and threats to this species. Further information may indicate it is more threatened.

Taxonomic source(s)
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

Distribution and population
Zoothera everetti is restricted to Borneo, where it is endemic to Sabah and Sarawak, Malaysia. It inhabits submontane forest on Mt Kinabalu, Mt Murud, Mt Mulu, Mt Dulit, Mt Trus Madi and the Kelabit uplands, where, despite its highly secretive nature, it may be genuinely rare and declining in some areas with loss of forest at lower altitudes.

Population justification
This species appears to be genuinely rare within a restricted range. Hence, its population is provisionally estiamted to number c.10,000-19,999 individuals, but density estimates are needed to inform a more accurate global population estimate. This estimate equates to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.

Trend justification
This species is thought to be declining owing to loss and degradation of forest habitats within its range, particularly at the lower limit of its altitudinal distribution. The rate of decline has not been estimated.

Ecology
This extremely secretive species inhabits undergrowth and lower levels of trees and vegetation in submontane deciduous forest at 1,200-2,300 m. It forages on invertebrates on the ground, particularly in moist patches and along the edges of streams. A nest has been found in May under dense undergrowth.

Threats
This species may be suffering from forest loss owing to agricultural encroachment, subsistence logging and forest fires at lower elevations within its restricted range.

Conservation Actions Underway
It is protected in Sabah under the Wildlife Conservation Enactment. Conservation Actions Proposed
Protect areas of lowland forest within the species's range. Enforce restrictions on hunting and logging within such protected areas. Determine its habitat association and generate density estimates to inform a revised population estimate for the species.

References
BirdLife International. 2001. Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

Clement, P.; Hathway, R. 2000. Thrushes. Christopher Helm, London.

Collar, N. J. 2005. Family Turdidae (Thrushes). In: del Hoyo, J., Elliott, A. and Christie, C. (eds), Handbook of birds of the world Vol. 10, pp. 514-807. Lynx Edicions, Barcelona, Spain.

Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Benstead, P., Bird, J., Khwaja, N.

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

Recommended citation
BirdLife International (2014) Species factsheet: Zoothera everetti. Downloaded from http://www.birdlife.org on 18/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/09/2014.

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 Turdidae (Thrushes)
Species name author (Sharpe, 1892)
Population size 6000-15000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 17,000 km2
Country endemic? Yes
Links to further information
- Additional Information on this species