NT
Sclater's Crowned-pigeon Goura sclaterii



Taxonomy

Taxonomic note
Goura scheepmakeri and G. sclaterii (del Hoyo and Collar 2014) were previously lumped as G. scheepmakeri following Sibley and Monroe (1990, 1993).

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
- - -

Red List history
Year Category Criteria
2022 Near Threatened A2cd+3cd+4cd
2016 Near Threatened C1
2014 Near Threatened C2a(ii)
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 257,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown poor - -
Population trend decreasing poor suspected 2000-2029
Rate of change over the past 10 years/3 generations (longer of the two periods) 15-29% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 15-29% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 15-29% - - -
Generation length 9.5 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: There are no known population estimates for this poorly-known species, but its range contains more than 100,000 km2 of suitable forest; thus, the population is unlikely to be small. eBird (2022) suggest that, at least locally, it may be fairly common.

Trend justification: Loss and degradation of lowland forest through large-scale selective logging and the development of oil palm plantations are suspected to be driving a population decline in this species. In the 20 years to 2021, forest cover in this species' range was reduced by c.8% (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein), equivalent to a rate of c.12% over three generations (28.5 years; Bird et al. 2020). As a strictly forest-dependent species, this is thought to be the minimum rate of population reduction, since the species is likely to be impacted too by degradation, fragmentation and additive impacts of hunting. Moreover, it appears to have some predilection for riverine and alluvial forests which are more accessible to both loggers and hunters. Consequently, the species is suspected of declining continuously at a rate of 15-29% over three generations.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Swamp major resident
Altitude 0 - 500 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%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Agro-industry plantations Timing Scope Severity Impact
Ongoing Unknown Slow, Significant Declines Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Small-holder plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
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%) Negligible declines Low Impact: 5
Stresses
Species mortality
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
Energy production & mining Oil & gas drilling Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - non-trivial recent
Handicrafts, jewellery, etc. - - non-trivial recent
Pets/display animals, horticulture - - international non-trivial recent

Recommended citation
BirdLife International (2024) Species factsheet: Goura sclaterii. Downloaded from https://datazone.birdlife.org/species/factsheet/sclaters-crowned-pigeon-goura-sclaterii on 24/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 24/02/2024.