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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
Green-legged Partridge Tropicoperdix chloropus	LC	resident	2002	frequent	A2, A3
Annamite Crested Argus Rheinardia ocellata	CR	resident	2002	5-12 males	A1, A2, A3
Grey Peacock-Pheasant Polyplectron bicalcaratum	LC	resident	2000	present	A3
Siamese Fireback Lophura diardi	LC	resident	1999	present	A1, A3
Vietnam Pheasant Lophura edwardsi	CR	resident	1998-1999	1 individuals	A2, A3
Lesser Fish-eagle Icthyophaga humilis	NT	non-breeding	2002	1 individuals	A1
Anorrhinus tickelli	NR	resident	2002	11 individuals	A1
Red-vented Barbet Psilopogon lagrandieri	LC	resident	2000	present	A3
Green-eared Barbet Psilopogon faiostrictus	LC	resident	2000	present	A3
Red-collared Woodpecker Picus rabieri	NT	resident	2002	present	A1, A3
Bar-bellied Pitta Hydrornis elliotii	LC	resident	2000	present	A3
Crow-billed Drongo Dicrurus annectens	LC	resident	2000	present	A3
Sultan Tit Melanochlora sultanea	LC	resident	2000	present	A3
Grey-eyed Bulbul Iole propinqua	LC	resident	2000	present	A3
Indochinese Wren-babbler Napothera danjoui	NT	resident	2002	present	A1, A2
Lesser Necklaced Laughingthrush Garrulax monileger	LC	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 (2007) is shown below.

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

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

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
2012	Bac Huong Hoa	Khu bảo tồn thiên nhiên	16

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Site Support Groups of Cop village; Huong Lap commune, Bac Huong HoaNature Reserve	2004
Site Support Groups of Cuoi village; Huong Lap commune, Bac Huong Hoa Nature Reserve	2004

For more information on BirdLife's work with Local Conservation Groups, please click here.

Habitat1	Habitat detail	% of IBA
Artificial/Terrestrial		-
Forest		-
Shrubland		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Truong Son (Vietnam). Downloaded from https://datazone.birdlife.org/site/factsheet/truong-son-iba-vietnam on 23/11/2024.