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VU
Helmet Vanga Euryceros prevostii

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable B1ab(ii,iii,v) 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Vulnerable
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern

Species attributes

Migratory status not a migrant Forest dependency High
Land mass type shelf island
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 16,200 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 6000-15000 poor Estimated 2000
Population trend Decreasing medium -
Number of subpopulations 2-100 - - -
Largest subpopulation 1001-9999 - - -
Generation length (yrs) 7.1 - - -
Population justification: The population size is preliminarily estimated to fall into the band 10,000-19,999 individuals. This equates to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.
Trend justification: The population is suspected to be declining in line with the clearance and degradation of lowland rainforest within the species's range. The likely rate of decline has not been estimated.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Madagascar Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Madagascar Ambatovaky Special Reserve site factsheet
Madagascar Anjanaharibe Sud Special Reserve site factsheet
Madagascar Betampona Strict Nature Reserve site factsheet
Madagascar Bezavona Classified Forest site factsheet
Madagascar Makira SAPM site factsheet
Madagascar Mananara-North National Park site factsheet
Madagascar Mantadia National Park and Analamazaotra Special Reserve site factsheet
Madagascar Marojejy National Park site factsheet
Madagascar Masoala National Park site factsheet
Madagascar Tsaratanana Strict Nature Reserve and surrounding areas site factsheet
Madagascar Zahamena National Park site factsheet
Madagascar Zahamena-Mantadia SAPM site factsheet

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 - 1000 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 Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Euryceros prevostii. Downloaded from http://www.birdlife.org on 30/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Vangidae (Vangas)
Species name author Lesson, 1831
Population size 6000-15000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 16,200 km2
Country endemic? Yes
Links to further information
- Summary information on this species