LC
Brown-headed Crow Corvus fuscicapillus



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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
2023 Least Concern
2016 Near Threatened B1ab(ii,iii,v);C1+2a(i)
2012 Near Threatened B1ab(ii,iii,v);C1+2a(i)
2008 Near Threatened C1; C2a(i)
2004 Near Threatened
2000 Lower Risk/Near Threatened
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 -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 447,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing poor suspected 2016-2035
Rate of change over the past 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 1-9% - - -
Generation length 6.48 years - - -
Number of subpopulations 4-10 - - -
Percentage of mature individuals in largest subpopulation 1-89% - - -

Population justification: The population size of this species has not been quantified, but it is considered generally rare and most numerous in wetter parts of its range (Debus 2020). It is widespread, but occurs in low numbers, on the Aru islands (Diamond and Bishop 1994), and is quite common at Nimbokrang (Gibbs 1993). It is reportedly common in the forest interior of Waigeo (Beehler and Pratt 2016).

Trend justification: This species usually occurs deep in primary forest, occasionally in secondary growth and rarely in open areas (Beehler and Pratt 2016, Debus 2020); a slow population decline is therefore suspected as a result of habitat loss in some parts of the range, although large tracts of suitable habitat remain secure at present. Remote sensing data (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein) indicate that forest loss in this species' range has been slow but ongoing, equivalent to c.2% in the three generations to 2021, with some areas of habitat threatened by logging, mining and damming of rivers (Debus 2020). Declines are likely localised and tentatively placed here in the range 1-9% in three generations.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Indonesia extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Pulau Baun
Indonesia Pulau Kobroor

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
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, Ecosystem conversion
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Dams & water management/use - Dams (size unknown) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2024) Species factsheet: Brown-headed Crow Corvus fuscicapillus. Downloaded from https://datazone.birdlife.org/species/factsheet/brown-headed-crow-corvus-fuscicapillus on 25/12/2024.
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 25/12/2024.