NT
Austen's Brown Hornbill Anorrhinus austeni



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2018 Near Threatened C1
2016 Near Threatened C1
2012 Near Threatened C1
2008 Near Threatened C1
2005 Near Threatened
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type continent
Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 1,650,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing poor suspected 2000-2033
Rate of change over the past 10 years/3 generations (longer of the two periods) 1-19% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 1-19% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 1-19% - - -
Generation length 11.1 years - - -

Population justification: The population size of this species has not been quantified, but it is generally scarce or rare across most of its range, and only locally common at a handful of sites (Poonswad et al. 2013).

Trend justification: Despite a lack of data on trends, a slow to moderate decline is suspected to be occurring as a result of habitat loss and hunting pressure.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Cambodia extant native yes
China (mainland) extant native yes
India extant native yes
Laos extant native yes
Myanmar extant native yes
Thailand extant native yes
Vietnam extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Cambodia Kirirom
Laos Dong Ampham
Laos Eastern Bolikhamxay Mountains
Laos Hin Namno
Laos Nakai Plateau
Laos Nakai-Nam Theun
Laos Phou Dendin
Laos Upper Xe Kaman
Thailand Huai Kha Khaeng
Thailand Kaeng Krachan
Thailand Thung Yai - Naresuan
Thailand Umphang
Vietnam Ban Bung
Vietnam Cuc Phuong
Vietnam Ke Go
Vietnam Kon Cha Rang
Vietnam Kon Ka Kinh
Vietnam Kon Plong
Vietnam Ngoc Linh
Vietnam Pu Mat
Vietnam Vu Quang

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 0 - 1800 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Species disturbance, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluctuations Low Impact: 5
Stresses
Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Scale
Food - human subsistence, national
Pets/display animals, horticulture international

Recommended citation
BirdLife International (2024) Species factsheet: Austen's Brown Hornbill Anorrhinus austeni. Downloaded from https://datazone.birdlife.org/species/factsheet/austens-brown-hornbill-anorrhinus-austeni on 03/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 03/12/2024.