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Calyptomena viridis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PASSERIFORMES EURYLAIMIDAE

Scientific Name: Calyptomena viridis
Species Authority: Raffles, 1822
Common Name(s):
English Asian Green Broadbill, Green Broadbill

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Benstead, P., Gilroy, J., Taylor, J.
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.

Geographic Range [top]

Range Description: 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 (BirdLife International 2001). It is locally common to fairly common in suitable habitat.

Countries:
Native:
Indonesia; Malaysia; Myanmar; Thailand
Regionally extinct:
Brunei Darussalam; Singapore
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population size of this species has not been quantified; it is considered fairly common to locally common.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and 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 activities (del Hoyo et al. 2003).

Systems: Terrestrial

Threats [top]

Major Threat(s): 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 Actions [top]

Conservation Actions: Conservation Actions Underway
No targeted conservation actions are known for this species, although it occurs in a number of protected areas.

Conservation Actions Proposed
Conduct repeated surveys across the species's 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 species's range.


Citation: BirdLife International 2012. Calyptomena viridis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 20 September 2014.
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