Justification Although this species remains common in many parts of its large range, it is considered Near Threatened as it is highly sensitive to habitat loss and degradation, which are likely to have caused moderately rapid population declines throughout its range.

Family/Sub-family Eurylaimidae

Species name author Raffles, 1822

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

Population estimate

Population trend

Range estimate (breeding/resident)

Country endemic?

decreasing

2,910,000 km²

No

Range & population Calyptomena viridis occurs in the Sundaic lowlands, from south Tenasserim, Myanmar, peninsular and west Thailand, Sabah, Sarawak and Peninsular Malaysia, Singapore (formerly), Kalimantan (including the Natuna Islands) and Sumatra (including offshore islands), Indonesia and Brunei. It is locally common to fairly common in suitable habitat.

Ecology: This species occurs primarily in the understorey of primary evergreen and mixed dipterocarp forest in the lowlands, principally below 800 m, but occasionally to 1,700 m. It is also found in tall secondary forest and other secondary habitats if primary forest is adjacent. These habitats may only be used for foraging. Studies have revealed marked declines in density following logging activities¹.

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).

Conservation measures underway No targeted conservation actions are known for this species.

Conservation measures proposed Conduct repeated surveys across the range to determine the magnitude of declines and rates of range contraction. Conduct ecological studies to improve understanding of its precise habitat requirements, tolerance of secondary habitats and response to fragmentation. Campaign for the protection of remaining tracts of lowland forest throughout the range.

References BirdLife International (2001). 1. del Hoyo et al. (2003).

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: Calyptomena viridis. 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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