NT
Red-and-black Thrush Geokichla mendeni



Justification

Justification of Red List Category
This species is listed as Near Threatened because there are some indications that it has a moderately small, fragmented population within its small range, and it is undergoing a continuing decline owing to trapping. However, little is currently known about the population size and structure or threats to this species. Further information may indicate that it is more highly threatened.

Population justification
There are no population size data for this species, but the size of the Extent of Occurrence, and data on the population densities of similar species, suggest that the population may number approximately 20,000-49,999 individuals.

Trend justification
Although data are very poor, the species is suspected to be declining owing to bird trade and, possibly, habitat degradation.

Distribution and population

This species is known from Peleng, in the Banggai Islands, and Taliabu, in the Sula Islands, Indonesia (Collar 2004). It has been described as extremely scarce on Taliabu (Clement and Hathway 2000).

Ecology

It is known from lowland forest on Taliabu at 50-300 m altitude, including selectively logged and degraded forests with bamboo stands (Clement and Hathway 2000). It is usually recorded alone or in pairs, foraging on arthropods or molluscs on the ground (Clement and Hathway 2000). There is no information on breeding ecology.

Threats

Habitat destruction is a potential threat, but the species appears able to tolerate at least a degree of habitat degradation. Zoothera species are heavily traded elsewhere in Indonesia because of their abilities as songsters, so it is likely that this threat is also impacting this species (Collar 2004, N. Brickle in litt. 2005).

Conservation actions

Conservation Actions Underway
No conservation measures are currently known.

Conservation Actions Proposed
Conduct further surveys to assess the specific habitat requirements and overall population size of this species. Verify the appearance and taxonomic status of the taxon on Taliabu. Estimate the likely impact of forest loss on Taliabu using satellite imagery and remote sensing. Assess the extent to which bird trade is a threat. Protect significant areas of forest on Peleng and Taliabu, in both strictly protected areas and community-led multiple use areas.

Identification

19-21 cm. A medium-sized thrush. Russet crown to back, unmarked black wings and underparts, white patch behind eye. Plumage may differ slightly on Taliabu. Similar spp. None in range. Voice A thin, high-pitched, upslurred call note. Song reported to be a typically thrush-like liquid series of notes.

Acknowledgements

Text account compilers
Bird, J., Mahood, S., Pilgrim, J.

Contributors
Brickle, N.


Recommended citation
BirdLife International (2019) Species factsheet: Geokichla mendeni. Downloaded from http://www.birdlife.org on 26/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 26/06/2019.