Justification of Red List Category
This scarce montane species probably has a moderately small population which is likely to be declining owing to continuing habitat degradation. It therefore qualifies as Near Threatened.
The global population size has not been quantified, but the species is described as locally common, although generally scarce on Sumatra and very rare on Java (Gibbs et al. 2001).
There are no data on population trends, but this species is suspected to be declining at a moderate rate, owing to habitat degradation.
Treron oxyurus is restricted to Sumatra (350-1,800 m) and West Java (600-3,000 m), Indonesia; although formerly considered locally common, it is now apparently very hard to find on both islands (BirdLife International 2001). There are recent records from Halimun-Salak National Park on Java, and Gunung Kerinci and Gunung Sinabung on Sumatra (eBird 2017).
It occurs in primary and secondary hill and montane forest, to 1,900 m in Sumatra and to 3,000 m in Java, where it keeps high in the canopy (Gibbs et al. 2001, Eaton et al. 2016). Breeding has been recorded during January in Sumatra and during June in Java (Gibbs et al. 2001).
Destruction of its preferred habitat has been widespread in the lower parts of its elevation range, and it is now uncommon and patchily distributed throughout its range.
Conservation Actions Underway
None is known.
Text account compilers
Westrip, J., Mahood, S., Martin, R, Taylor, J., Benstead, P.
Eaton, J., Hutchinson, R.
BirdLife International (2022) Species factsheet: Treron oxyurus. Downloaded from http://www.birdlife.org on 23/05/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/05/2022.