Justification of Red List Category
Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
A slow to moderate and on-going population decline is suspected, based on continuing habitat loss, although the species shows a degree of tolerance of degraded forest.
This species is endemic to Vanua Levu and Taveuni, Fiji. The species has not yet been surveyed. It may be restricted to western and central Vanua Levu and is apparently absent from the Natewa peninsula (J. S. Kretzschmar in litt. 2000).
The main threat to this species comes from continuing loss and deterioration of its mature forest habitat. Although industrial logging has ceased on Taveuni, forests on both islands are being slowly degraded by logging for domestic use and agricultural expansion, with only c.50% of Vanua Levu remaining forested (Watling 2000).
Conservation Actions Underway
The species is protected under Fijian law. It occurs in nearly all protected areas with good forest.Conservation Actions Proposed
•Develop a monitoring programme for the forest birds of the Fiji Islands as declines in population and the initiation of threatening processes could well be going unnoticed (SPREP 2000). •Develop in-country training in survey techniques (SPREP 2000). •Initiate management in gazetted nature reserves (D. Watling in litt. 2000). •Assess population densities in various forest-types. •Advocate the creation of community-based forest reserves. •Carry out surveys on Vanua Levu and Taveuni.
Text account compilers
O'Brien, A., Taylor, J. & Temple, H.
BirdLife International (2023) Species factsheet: Gymnomyza viridis. Downloaded from http://www.birdlife.org on 28/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/03/2023.