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The site was identified as important in 2002 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Rufous-throated Partridge Arborophila rufogularis	LC	resident	2000	present	A3
Annamite Crested Argus Rheinardia ocellata	CR	resident	1999	frequent	A1, A2
Silver Pheasant Lophura nycthemera	LC	resident	2000	present	A3
Asian Emerald Cuckoo Chrysococcyx maculatus	LC	resident	2000	present	A3
Austen's Brown Hornbill Anorrhinus austeni	NT	resident	1998	present	A3
Necklaced Barbet Psilopogon auricularis	LC	resident	2000	present	A3
Bay Woodpecker Blythipicus pyrrhotis	LC	resident	2000	present	A3
Stripe-breasted Woodpecker Dendrocopos atratus	LC	resident	2000	present	A3
Rusty-naped Pitta Hydrornis oatesi	LC	resident	2000	present	A3
Blue-rumped Pitta Hydrornis soror	LC	resident	2000	present	A3
Maroon Oriole Oriolus traillii	LC	resident	2000	present	A3
Black-winged Cuckooshrike Lalage melaschistos	LC	resident	2000	present	A3
Urocissa whiteheadi	NR	resident	2000	present	A3
Indochinese Green Magpie Cissa hypoleuca	LC	resident	2000	present	A3
Yellow-cheeked Tit Machlolophus spilonotus	LC	resident	2000	present	A3
Mountain Bulbul Ixos mcclellandii	LC	resident	2000	present	A3
White-spectacled Warbler Phylloscopus intermedius	LC	resident	2000	present	A3
White-tailed Leaf-warbler Phylloscopus intensior	LC	resident	2000	present	A3
Aegithalos concinnus	NR	resident	2000	present	A3
Grey-headed Parrotbill Paradoxornis gularis	LC	resident	2000	present	A3
Black-chinned Yuhina Yuhina nigrimenta	LC	resident	2000	present	A3
Streaked Wren-babbler Gypsophila brevicaudata	LC	resident	2000	present	A3
Manipur Fulvetta Fulvetta manipurensis	LC	resident	2000	present	A3
Mountain Fulvetta Alcippe peracensis	LC	resident	2000	present	A3
Cutia nipalensis	NR	resident	2000	present	A3
Black-hooded Laughingthrush Garrulax milleti	LC	resident	1999	present	A2, A3
Red-tailed Laughingthrush Trochalopteron milnei	LC	resident	2000	present	A3
Golden-winged Laughingthrush Trochalopteron ngoclinhense	EN	resident	1996-1998	present	A1, A2
Heterophasia melanoleuca	NR	resident	2000	present	A3
Blue-winged Minla Siva cyanouroptera	LC	resident	2000	present	A3
Black-crowned Barwing Actinodura sodangorum	NT	resident	1996-1998	present	A1, A2
Yellow-billed Nuthatch Sitta solangiae	NT	resident	1999	present	A2, A3
Dark-sided Thrush Zoothera marginata	LC	resident	2000	present	A3
Green Cochoa Cochoa viridis	LC	resident	2000	present	A3
Small Niltava Niltava macgrigoriae	LC	resident	2000	present	A3
Fujian Niltava Niltava davidi	LC	resident	2000	present	A3
White-gorgeted Flycatcher Anthipes monileger	LC	resident	2000	present	A3
White-tailed Blue Robin Myiomela leucura	LC	resident	2000	present	A3
Slaty-backed Forktail Enicurus schistaceus	LC	resident	2000	present	A3
Greyish-crowned Leafbird Chloropsis lazulina	LC	resident	2000	present	A3
Streaked Spiderhunter Arachnothera magna	LC	resident	2000	present	A3
Black-throated Sunbird Aethopyga saturata	LC	resident	2000	present	A3
Aethopyga christinae	NR	resident	2000	present	A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2002. The most recent assessment (2008) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Shrubland	-	-	near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	moderate to rapid deterioration	low
Human intrusions and disturbance	happening now	small area/few individuals (<10%)	moderate to rapid deterioration	low
Energy production and mining	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Transportation and service corridors	likely in long term (beyond 4 years)	small area/few individuals (<10%)	slow but significant deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

Year	Protected Area	Designation	% overlap with IBA
2001	Song Thanh	Khu Bảo tồn thiên nhiên	56
2014	Ngoc Linh (Kon Tum)	Khu Bảo tồn thiên nhiên	44
2014	Ngoc Linh (Quang Nam)	Khu Bảo tồn thiên nhiên	12

Habitat1	Habitat detail	% of IBA
Forest	Hill evergreen forest (subtropical), Montane broadleaf evergreen forest (mont temp)	90
Shrubland	Secondary scrub	10

1. IUCN Habitat classification.

Land use	% of IBA
not utilised	62
nature conservation and research	38

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ngoc Linh (Vietnam). Downloaded from https://datazone.birdlife.org/site/factsheet/ngoc-linh-iba-vietnam on 22/11/2024.