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Zosterops flavus 

Scope: Global
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Zosteropidae

Scientific Name: Zosterops flavus
Species Authority: (Horsfield, 1821)
Common Name(s):
English Javan White-eye

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): Symes, A. & Butchart, S.
Facilitator/Compiler(s): Benstead, P., Gilroy, J., Khwaja, N., Mahood, S.
Justification:
Although this species remains abundant in suitable habitat, it has a highly restricted and fragmented range, and is likely to be declining moderately rapidly as a result of habitat loss. It is currently considered Near Threatened, and should be carefully monitored.

Previously published Red List assessments:

Geographic Range [top]

Range Description:Zosterops flavus is restricted to Java and southern Kalimantan, Indonesia, with one record from Sarawak, Malaysia. The population on Java is restricted in range (but apparently very common where it does occur) while recent records from Kalimantan suggest the species might be locally common in mangrove on the south coast.

Countries occurrence:
Native:
Indonesia; Malaysia
Additional data:
Continuing decline in area of occupancy (AOO):Yes
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:17700
Continuing decline in extent of occurrence (EOO):YesExtreme fluctuations in extent of occurrence (EOO):No
Continuing decline in number of locations:Yes
Extreme fluctuations in the number of locations:No
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, but it is described as locally common.

Trend Justification:  Data on trends are lacking, but declines are suspected owing to rates of destruction and degradation of coastal and mangrove forests within the range.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:UnknownContinuing decline of mature individuals:Yes
Extreme fluctuations:NoPopulation severely fragmented:No
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:This species occurs in mangroves, coastal scrub, relict coastal forest and scattered trees.

Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):3.5
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): This species is likely to be threatened by the destruction and degradation of mangrove forests and other forest habitats, although further studies are needed in order to determine whether it persists in degraded habitats.

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway


Conservation Actions Proposed
Conduct ecological studies to determine the response of this species to habitat degradation and fragmentation. Monitor population and habitat trends throughout the range. Protect significant areas of suitable forest at sites where it is known to be common.


Citation: BirdLife International. 2012. Zosterops flavus. The IUCN Red List of Threatened Species 2012: e.T22714082A38231230. . Downloaded on 27 August 2016.
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