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Rusty-bellied Shortwing Brachypteryx hyperythra

Justification
Recent surveys have found this species to be commoner and more widespread than was previously thought. Nevertheless, it is believed to have a moderately small population within its small range, and numbers are is suspected to be declining as a consequence of habitat loss. However, the range is not yet severely fragmented or restricted to few locations. For these reasons, the species is classified as Near 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.

Identification
13 cm. Small, chat-like bird with rufous-orange throat and underparts. Male dark blue above with thin white eyebrow. Female dark olive-brown above and duller below. Both sexes show whitish belly-centre. Similar spp. Female Lesser Shortwing B. leucophrys is paler above and lacks pale rufous-orange on underparts. Voice Song is high-speed, slurred warble which ends abruptly and is introduced by spaced tu-tiu or wi-tu.

Distribution and population
Brachypteryx hyperythra is endemic to the eastern Himalayas, where it is currently known from West Bengal, Sikkim, Assam and Arunachal Pradesh (and perhaps Nagaland), India, north Myanmar, and north-west Yunnan, China. Data suggest it is scarce and local, but this may in part be due to its remote, inaccessible range, which is also likely to include Bhutan, and possibly Nepal and south-east Tibet. There are a number of recent records from northern Myanmar which suggest that the species may be commoner and more widespread than previously thought (J. Eames in litt. 2006, T. Htin Hla in litt. 2006, S. Myers in litt. 2006).

Population justification
The population is estimated to number 10,000-19,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.

Trend justification
The species is suspected to be declining at a slow or moderate rate, owing to deforestation within its known and suspected range.

Ecology
In May and June (the presumed breeding season) it has been found in dense undergrowth and Arundinaria ("ringal") bamboo in broad-leaved evergreen forest from 1,800-3,000 m. During winter, it frequents dense reeds, thick secondary scrub, forest undergrowth and well-vegetated gulleys, from foothills at 450 m to at least 2,950 m. It has recently been recorded at much lower elevations down to c.150 m, inhabiting tall "elephant type" grass (T. Htin Hla in litt. 2006, S. Myers in litt. 2006). It is probably resident, making seasonal altitudinal movements, although it possibly migrates short distances.

Threats
Without a more complete knowledge of its habitat preferences and breeding and wintering ranges, it is difficult to identify particular threats. However, forest loss and degradation owing to logging, smaller-scale cutting for fuelwood, clearance for tea plantations, shifting agriculture and livestock-grazing of forest understorey are all problems within its known range, especially at lower altitudes.

Conservation Actions Underway
It occurs in Namdapha National Park and the Mehao, Dibang and Kamleng wildlife sanctuaries in north-east India, and in Hponkanrazi and Hukaung Valley wildlife sanctuaries in northern Myanmar. Conservation Actions Proposed
Study the ecology and threats that may face this species. Identify key areas and important populations, and recommend their integration into protected areas if necessary. Support initiatives seeking to reduce levels of forest destruction and degradation.

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

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

Text account compilers
Benstead, P., Bird, J., Davidson, P., Khwaja, N., Peet, N., Tobias, J.

Contributors
Eames, J.C., Htin Hla, T., Myers, S.

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

Recommended citation
BirdLife International (2014) Species factsheet: Brachypteryx hyperythra. 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.

Additional resources for this species

ARKive species - Rusty-bellied shortwing (Brachypteryx hyperythra) 0

Key facts
Current IUCN Red List category Near Threatened
Family Turdidae (Thrushes)
Species name author Jerdon & Blyth, 1861
Population size 6000-15000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 19,800 km2
Country endemic? No
Links to further information
- Additional Information on this species