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Grey-crowned Tetraka Bernieria cinereiceps

IUCN Red List Criteria

Near Threatened (criteria nearly met) A3c;C2a(ii) 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
2004 Near Threatened
2000 Lower Risk/Near Threatened
1996 Vulnerable
1994 Vulnerable
1988 Threatened

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) 164,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals Unknown not applicable Not Applicable 0
Population trend Decreasing -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 3.6 - - -
Population justification: The population size of this species has not been quantified, but it is described as fairly common in parts of its range.
Trend justification: The species's population is predicted to undergo a moderately rapid decline as rainforest in eastern Madagascar suffers increasing clearance and degradation for shifting agriculture.

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 Andohahela National Park: Parcel I site factsheet
Madagascar Andringitra National Park site factsheet
Madagascar Anjanaharibe Sud Special Reserve site factsheet
Madagascar Anjozorobe SAPM site factsheet
Madagascar Bezavona Classified Forest site factsheet
Madagascar Kalambatritra Special Reserve site factsheet
Madagascar Mangerivola Special Reserve site factsheet
Madagascar Mantadia National Park and Analamazaotra Special Reserve site factsheet
Madagascar Marojejy National Park site factsheet
Madagascar Marotandrano Special Reserve site factsheet
Madagascar Masoala National Park site factsheet
Madagascar Midongy South National Park site factsheet
Madagascar Onive Classified Forest site factsheet
Madagascar Ranomafana National Park site factsheet
Madagascar Tsaratanana Strict Nature Reserve and surrounding areas site factsheet
Madagascar Zafimaniry Classified Forest Future SAPM site factsheet
Madagascar Zahamena National Park site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 900 - 2000 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%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Bernieria cinereiceps. Downloaded from http://www.birdlife.org on 01/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 01/08/2014.

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 Near Threatened
Family Sylviidae (Old World warblers)
Species name author (Sharpe, 1881)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 164,000 km2
Country endemic? Yes
Links to further information
- Summary information on this species