Justification This species is restricted to forests within a region undergoing rapid and widespread deforestation. Although it remains widespread and common, it is likely to be declining moderately rapidly throughout its range, and is therefore considered Near Threatened.

Family/Sub-family Oriolidae

Species name author Horsfield, 1821

Taxonomic source(s) Sibley and Monroe (1990, 1993)

Population estimate

Population trend

Range estimate (breeding/resident)

Country endemic?

decreasing

-

No

Range & population Oriolus xanthonotus occurs in the Sundaic lowlands, from south Tenasserim, Myanmar, peninsular Thailand, Sabah, Sarawak and Peninsular Malaysia, Singapore (formerly), Kalimantan, Sumatra (including Mentawai and Bangka islands) and Java, Indonesia, Brunei and Calamian Islands and Palawan, south-west Philippines. It is fairly common and widespread in suitable forest habitats.

Ecology: This species is mainly found in primary lowland evergreen forest to 1,220 m. It also occurs in tall secondary forest and peatswamp-forest.

Threats Rates of forest loss in the Sundaic lowlands have been extremely rapid, owing partly to the escalation of illegal logging and land conversion, with deliberate targeting of all remaining stands of valuable timber including those inside protected areas. Forest fires have also had a damaging effect (particularly in 1997-1998). The magnitude of these threats may be allayed by this species's tolerance of secondary and sloping hill forest.

Conservation measures proposed Monitor populations throughout the range to identify population trends and rates of habitat loss. Conduct further ecological studies to determine whether populations can persist in secondary habitats in the absence of adjacent primary forest. Protect significant areas of suitable forest, in both strictly protected areas and community-led multiple use areas.

References BirdLife International (2001).

Further web sources of information

Fully detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001), together with new information collated since the publication of the Red Data Book

Text account compilers Phil Benstead (BirdLife International), James Gilroy (BirdLife International)

IUCN Red List evaluators Phil Benstead (BirdLife International), Stuart Butchart (BirdLife International), James Gilroy (BirdLife International), Alison Stattersfield (BirdLife International)

Recommended citation BirdLife International (2009) Species factsheet: Oriolus xanthonotus. Downloaded from http://www.birdlife.org on 10/2/2010

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.

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