NT
Dusky Friarbird Philemon 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
2022 Near Threatened B1b(iii)
2016 Vulnerable C2a(ii)
2012 Vulnerable C2a(ii)
2008 Vulnerable C2a(ii)
2007 Vulnerable
2004 Vulnerable
2000 Vulnerable
1996 Data Deficient
1994 Data Deficient
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,600 medium
Extent of Occurrence breeding/resident (km2) 2,500
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 5-15 - - -
Decline (10 years/3 generation past and future) 5-15 - - -
Number of subpopulations 1 - - -
Percentage in largest subpopulation 100 - - -
Generation length (yrs) 4.01 - - -

Population justification: The population size of this species has not been formally estimated although it is described as fairly common (Eaton et al. 2016) to common (eBird 2022). The densities of other Philemon species vary greatly, but typically exceed 100 individuals/km2 (see, e.g., Marsden et al. 1997) such that with c.1,700 km2 of forest being left within its mapped range in 2021 (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein), the total population size of this species is likely to be substantial even if only a portion of the mapped range is occupied.

Trend justification: Data on population trends are not available, but this species presumably remains stable across much of its range, as habitats are relatively intact. Habitat loss has occurred on a local scale (especially in more coastal, accessible parts of the island), equal to a total reduction in forest cover extent in its range of 7-8% in the three generations to 2021 (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein). As a forest-dependent species, this is thought to have caused approximately equivalent reductions in population size, and these losses are projected to occur at the same rate in the future.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Indonesia N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Morotai
Indonesia Tanah Putih
Indonesia Aketajawe
Indonesia Lolobata
Indonesia Labi Labi
Indonesia Halmahera Timur

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 600 m Occasional altitudinal limits (max) 600 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 Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
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 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
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Philemon fuscicapillus. Downloaded from http://www.birdlife.org on 09/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 09/12/2022.