VU
Javan Trogon Apalharpactes reinwardtii



Justification

Justification of Red List Category
This species has been downlisted to Vulnerable on the basis that its population is estimated to be larger than previously thought; however, its population remains small and inferred to be in on-going decline as a result of habitat loss and some trapping pressure.

Population justification
The population size has been estimated to be as low as a few hundred pairs (Collar and van Balen 2002); however, it is easily overlooked, and there is still extensive forest east of Cibodas/Halimun that remains to be surveyed, thus it may be more common and widespread than recent observations suggest (B. van Balen in litt. 2013). It seems likely that considerably more than 250 mature individuals occupy each of the large areas of forest at Gunung Gede and Halimun (C. Robson in litt. 2013). The species's population is therefore placed in the band for 2,500-9,999 mature individuals.

Trend justification
Although much of the population may now be restricted to protected areas on Java, it is suspected to be continuing to decline at a moderate rate, owing to the on-going encroachment of forests by agriculture and urban development, as well as limited trapping pressure (A. A. Supriatna in litt. 2012, B. van Balen in litt. 2013).

Distribution and population

Apalharpactes reinwardtii is known from seven forested mountains in West Java, Indonesia: Gunung Halimun, Gunung Salak, Gunung Gede-Pangrango, Gunung Patuha-Tilu, Gunung Wayang, Gunung Papandayan and Ciwidey. There are only recent records from four of these (Halimun, Salak, Gede-Pangrango and Ciwidey), but it has also been recently reported from Mt. Slamet and Mt. Merapi (B. van Balen in litt. 2016), which would represent a considerable range extension. Although it has been stated to occur at 800-2,600 m, little forest remains below 1,000 m away from Halimun, and the species appears to be rarer at higher elevations. The only site where the species appears to be common is Gunung Halimun, although the species is frequently encountered on the main track at Gunung Gede-Pangrango. The population size of this species may be as low as a few hundred pairs (Collar and van Balen 2002), however the unusual vocalisation is easy to overlook and the species can be cryptic (C. Robson in litt. 2016).

Ecology

It appears to favour mid-montane forest, where it feeds on a variety of invertebrates taken by aerial sallying or by perch-gleaning. It also feeds on fruit and will occasionally join mixed-species flocks (del Hoyo et al. 2001).

Threats

Forest loss, degradation and fragmentation, through widespread agricultural encroachment and localised development (e.g. holiday resorts and geothermal projects), are on-going threats in the species's altitudinal range. It also appears to suffer limited trapping pressure (A. A. Supriatna in litt. 2012, B. van Balen in litt. 2013).

Conservation actions

Conservation Actions Underway
The species has been recorded in Gunung Halimun and Gunung Gede-Pangrango National Parks.

Conservation Actions Proposed
Conduct further surveys for the species at all mountains potentially within its range to clarify its current distribution and population status. Propose key sites for designation as protected areas, or as extensions to existing reserves. Work with local authorities and relevant companies to minimise the impact of tourism and development projects on forested mountains within its range.

Identification

34 cm. A striking green and yellow trogon. Upperparts green, except for a blue tail. Underparts largely yellow with a green breast band. The bill is red and the naked skin around the eye is blue. Voice A dry, high rattling sterrrr.

Acknowledgements

Text account compilers
Allinson, T, Benstead, P., Bird, J., Symes, A., Taylor, J., Martin, R

Contributors
Iqbal, M., Robson, C., van Balen, B., Supriatna, A., Brickle, N.


Recommended citation
BirdLife International (2019) Species factsheet: Apalharpactes reinwardtii. Downloaded from http://www.birdlife.org on 16/01/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/01/2019.