EN
Raiatea Fruit-dove Ptilinopus chrysogaster



Taxonomy

Taxonomic note
Ptilinopus purpuratus and P. chrysogaster (del Hoyo and Collar 2014) were previously lumped as P. purpuratus 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
- B1ab(iii) B1ab(iii)

Red List history
Year Category Criteria
2018 Endangered B1ab(iii)
2016 Near Threatened D1+2
2014 Near Threatened D1+2
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) 3,800
Number of locations 2-5 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 1000-2499 poor suspected 0
Population trend Decreasing 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) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations 4-5 - - -
Percentage in largest subpopulation 1-89 - - -

Population justification: On Huahine (75 km2) and Raiatea (168 km2) it was described as reasonably common and occurring at densities of 6-7 per hectare in some parts of Raiatea. On Tahaa (90 km2), Bora Bora (29 km2) and Maupiti (11 km2) it is uncommon, with populations in 1973 estimated at 500, 50 and 100 birds respectively (Gibbs et al. 2001). Current population sizes on these islands are unknown, and there appear to be no estimates for Huahine and Raiatea. The total population is presumed to be greater than 1,000 mature individuals, and may lie within the band 1,000-2,499 mature individuals.

Trend justification: The population is suspected to be declining based on a lack of recent sightings on Maupiti and the presence across the species's range of swamp harrier (Circus approximans), which has been recorded preying on the species (C. Blanvillain in litt. 2018). Additionally, the species's habitat quality is thought to be declining due to invasive plant species (C. Blanvillain in litt. 2018).


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
French Polynesia Vallée de Avera

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 450 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Circus approximans Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Felis catus Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Rattus exulans Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Rattus rattus Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Unspecified species Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - - Non-trivial Recent
Food - human - - Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Ptilinopus chrysogaster. Downloaded from http://www.birdlife.org on 13/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 13/08/2022.