Archived 2014 discussion: Javan Trogon (Apalharpactes reinwardtii): downlist to Vulnerable?

This discussion was first published as part of the 2013 Red List update, but remains open for comment to enable reassessment in 2014.

BirdLife species factsheet for Javan Trogan

Javan Trogon Apalharpactes reinwardtii is restricted to West Java, Indonesia. It is currently classified as Endangered under criterion C2a(i) because it was thought to have a very small population (<2,500 mature individuals), with all subpopulations numbering ≤250 mature individuals, which were likely to be in continuing decline owing to habitat loss and degradation. The Extent of Occurrence (EOO) of this species is estimated at c.1,100 km2.

This species is known from just six forested mountains in West Java: Gunung Halimun, Gunung Salak, Gunung Gede-Pangrango, Gunung Patuha-Tilu, Gunung Wayang and Gunung Papandayan. There are recent records from only three of these (Halimun, Salak and Gede-Pangrango), but it is still recorded regularly in these areas in suitable habitats (N. Brickle in litt. 2012). The global population was previously estimated as low as a few hundred pairs (Collar and van Balen 2002), but if this species is more abundant in these areas than previously thought, this estimate may require revision upwards. If further information suggests that the global population exceeds 2,500 mature individuals, and/or all subpopulations contain more than 250 mature individuals (but are ≤1,000), this species would warrant downlisting to Vulnerable under criterion C2a(i) of the IUCN Red List. If this species is still found at ≤10 locations, the EOO is <20,000 km2 and the area and quality of its habitat is continuing to decline, this species would also qualify as Vulnerable under criterion B1ab(ii,iii,v).

Information is required on this species’s distribution, population size and size of the largest subpopulation, and any further comments on the proposed downlisting are welcomed.

Reference:

Collar, N. J. and van Balen, S. (2002) The Blue-tailed Trogon Harpactes (Apalharpactes) reinwardtii: species limits and conservation status. Forktail 18: 121-125.

Related posts:

  1. Archived 2014 discussion: Kittlitz’s Murrelet (Brachyramphus brevirostris): is it eligible for downlisting?
  2. Archived 2011-2012 topics: Baird’s Trogon (Trogon bairdii): request for information
  3. Archived 2011-2012 topics: Taxonomic change in the genus Cissa: list Javan Green Magpie (C. thalassina) as Critically Endangered and Bornean Green Magpie (C. jefferyi) as Least Concern?
  4. Archived 2010-2011 topics: Newly-split Malayan Banded Pitta (Pitta irena), Bornean Banded Pitta (P. schwaneri) and Javan Banded Pitta (P. guajana): list all as Least Concern?
  5. Archived 2012-2013 topics: Pulitzer’s Longbill (Macrosphenus pulitzeri): downlist to Vulnerable or Near Threatened?
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7 Responses to Archived 2014 discussion: Javan Trogon (Apalharpactes reinwardtii): downlist to Vulnerable?

  1. Capture for trade seems to have been serious problem too in Java. Very recently, I once saw this bird sold in a local bird market near mount Gede-Pangrango, previously never. Around its potential habitats bird traders have increased in number lately, the trigger is actually their effort to catch Oriental White Eyes and at the same time and many rare, endemic species got trapped as well.

  2. Craig Robson says:

    Although it is regularly found at Gunung Gede and Halimun without too much trouble (considering the shy nature of the species), it is very hard to estimate numbers. I would certainly think that there are more than 250 mature individuals at each site. These are huge areas of forest, and birders only visit a tiny proportion of it. Vulnerable might be more appropriate.

  3. There is additional record from local birdwatcher (with a photo) from South Bandung, West Java. New locality from known areas before. It is restricted area (West Java only) should make it assesment careful.

  4. Bas van Balen says:

    The trogon is easily overlooked, especially when the calls are not known, and may be more common and widespread than recent observations suggest. There is still extensive forest east of Cibodas/Halimun that remains to be surveyed. (The birds are not targeted by bird trappers, as shown just by a single bird in a cage recently, and none or almost none previously. Vulnerable may be more appropriate.

  5. Andy Symes says:

    There is a photograph and video of the species labelled Ciwidey, West Java Province, taken in 2012 by Adi Sugiharto (this may well be the new locality in South Bandung referred to by Muhammad Iqbal). This is a significant distance from the currently-mapped range for the species.

    http://ibc.lynxeds.com/photo/javan-trogon-apalharpactes-reinwardtii/bird-branch

  6. Andy Symes says:

    Preliminary proposals

    Based on available information and comments posted above, our preliminary proposal for the 2014 Red List would be to treat Javan Trogon Apalharpactes reinwardtii as Vulnerable under criterion C2a(i).

    There is now a period for further comments until the final deadline of 31 March, after which recommended categorisations will be put forward to IUCN.

    The final Red List categories will be published on the BirdLife and IUCN websites in mid-2014, following further checking of information relevant to the assessments by both BirdLife and IUCN.

  7. Andy Symes says:

    Recommended categorisation to be put forward to IUCN

    Following further review, there has been no change to our preliminary proposal for the 2014 Red List status of this species.

    The final categorisation will be published later in 2014, following further checking of information relevant to the assessment by BirdLife and IUCN.

Comments are closed.