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Grey-chested Jungle-flycatcher Rhinomyias umbratilis

Justification
This forest-associated species is listed as Near Threatened because it is assumed to have experienced moderately rapid declines owing to the extensive loss of lowland forests from large areas of South-East Asia. It is not considered more threatened because it can use secondary habitats and occurs in lower montane forests which have not yet been severely affected by clearance.

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
Rhinomyias umbratilis is restricted to the Sundaic lowlands, occurring in peninsular Thailand; Sabah, Sarawak and peninsular Malaysia; Kalimantan and Sumatra (including offshore islands), Indonesia, and Brunei. It is locally not uncommon and occurs within small forest fragments. Nevertheless, declines are inferred in the past owing to the extensive loss of forest cover in lowland South-East Asia.

Population justification
The population size is unknown, but the species is described as generally scarce to uncommon, although locally common (del Hoyo et al. 2006).

Trend justification
Rates of forest loss in the Sundaic lowlands have been extremely rapid (Kalimantan lost nearly 25% of its evergreen forest during 1985-1997, and Sumatra lost almost 30% of its 1985 cover), because of a variety of factors, including the escalation of logging and land conversion, with deliberate targeting of all remaining stands of valuable timber including those inside protected areas, plus forest fires (particularly in 1997-1998). Because it tolerates degraded, fragmented and secondary habitats the species is thought to have avoided rapid declines.

Ecology
It occurs in lowland primary and secondary broadleaved forests, coastal peatswamp forest, Melanorrhoea heath-forest and overgrown rubber plantations to 1,160 m. Breeding has been recorded between January and August, with one nest described as a cup-shaped structure concealed inside a large Macaranga leaf (Li and Chuah 2008).

Threats
Forest destruction in the Sundaic lowlands of Indonesia, and in Thailand and Malaysia has been extensive (Kalimantan lost nearly 25% of its evergreen forest during 1985-1997, and Sumatra lost almost 30% of its 1985 cover), but the species's use of submontane forests, second growth and plantations implies that it is not immediately threatened.

Conservation Actions Underway
No species-specific actions are known but a number of protected areas lie within its range. Conservation Actions Proposed
Protect areas of lowland forest within the species's range. Enforce restrictions on agricultural encroachment and logging within such protected areas. Generate density estimates to inform a revised population estimate for the species. Estimate population trends by calculating rates of forest loss within its range using satellite imagery and remote sensing techniques.

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

del Hoyo, J.; Elliott, A.; Christie, D. 2006. Handbook of the Birds of the World, vol. 11: Old World Flycatchers to Old World Warblers. Lynx Edicions, Barcelona, Spain.

Taylor, B. 2006. Family Muscicapidawe (Old World Flycatchers). In: del Hoyo, J.; Elliot, A.; Christie, D. A. (ed.), Handbook of the Birds of the World. Vol. 11. Old World Flycatchers to Old World Warblers, pp. 56-163. Lynx Edicions, Barcelona.

Yong Ding Li; Lim Kim Chuah. 2008. Some observations of nesting Rufous-chested Flycatcher Ficedula dumetoria and Grey-chested Jungle Flycatcher Rhinomyias umbratilis in Peninsular Malaysia. BirdingASIA 9: 82-85.

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

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Text account compilers
Bird, J., Butchart, S., Khwaja, N.

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

Recommended citation
BirdLife International (2014) Species factsheet: Rhinomyias umbratilis. Downloaded from http://www.birdlife.org on 27/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 27/12/2014.

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 - Grey-chested jungle-flycatcher (Rhinomyias umbratilis) 0

Key facts
Current IUCN Red List category Near Threatened
Family Muscicapidae (Chats and Old World flycatchers)
Species name author (Strickland, 1849)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,140,000 km2
Country endemic? No
Links to further information
- Additional Information on this species