CR
Helmeted Hornbill Rhinoplax vigil



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
A3cd A3cd A2cd+3cd+4cd

Red List history
Year Category Criteria
2016 Critically Endangered A3cd
2015 Critically Endangered A3cd
2012 Near Threatened A2cd+3cd+4cd
2008 Near Threatened A2c,d; A3c,d; A4c,d
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Land-mass type - shelf island
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,540,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals not applicable not applicable 0
Population trend Decreasing poor inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 80-100 - - -
Decline (10 years/3 generation past and future) 30-49 - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 19.8 - - -

Population justification: The population size of this species has not been quantified; it is considered locally common.

Trend justification: An extremely rapid and severe decline is predicted to occur in this species's population over the next three generations (59 years) as a result of intense hunting pressure and habitat loss. The species has apparently almost disappeared from habitats where it was previously abundant on Sumatra (J. Eaton in litt. 2015).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Brunei N Extant Yes
Indonesia N Extant Yes
Malaysia N Extant Yes
Myanmar N Extant Yes
Singapore N Extinct Yes
Thailand N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Malaysia Belum-Temenggor
Malaysia Bintang Range
Malaysia Central Titiwangsa Range
Malaysia Danum Valley Conservation Area
Malaysia Danum-Linau
Malaysia Endau-Rompin
Malaysia Gunung Pueh
Malaysia Hose-Laga mountains
Malaysia Hulu Gombak-Sungai Lalang forest
Malaysia Kabili-Sepilok
Malaysia Kelabit Highlands
Malaysia Kinabatangan floodplain
Malaysia Kledang Range
Malaysia Krau Wildlife Reserve
Malaysia Lambir Hills National Park
Malaysia Lanjak Entimau Wildlife Sanctuary
Malaysia Loagan Bunut National Park
Malaysia Maliau Basin Conservation Area
Malaysia Mount Kinabalu
Malaysia Mulu - Buda Protected Area
Malaysia Nakawan Range
Malaysia Niah National Park
Malaysia Panti forest
Malaysia Similajau National Park
Malaysia Tabin Wildlife Reserve
Malaysia Taman Negara National Park
Malaysia Tanjung Datu-Samunsam Protected Area
Malaysia Tawau Hills Park
Malaysia Trus Madi Range
Malaysia Ulu Muda

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane marginal resident
Altitude 0 - 1100 m Occasional altitudinal limits (max) 1500 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Agro-industry plantations Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
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%) Very Rapid Declines High Impact: 8
Stresses
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, Ecosystem conversion
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Other household goods - - Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2017) Species factsheet: Rhinoplax vigil. Downloaded from http://www.birdlife.org on 12/12/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 12/12/2017.