VU
Red-naped Fruit-dove Ptilinopus dohertyi



Taxonomy

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
- - C2a(ii)

Red List history
Year Category Criteria
2024 Vulnerable C2a(ii)
2016 Vulnerable C2a(ii)
2012 Vulnerable C2a(ii)
2008 Vulnerable C2a(ii)
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 9,870 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 5600-6000 mature individuals medium estimated 2023
Population trend decreasing poor inferred 2018-2030
Rate of change over the past 10 years/3 generations (longer of the two periods) 5-10% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 5-10% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 5-10% - - -
Generation length 4.03 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: This species is described as uncommon in primary and secondary forest patches (Eaton et al. 2021). Fieldwork in 1989 and 1992 yielded density estimates of 6.9 (±1.2) birds per km2 (Jones et al. 1995). Given 1,080 km2 of closed-canopy forest on Sumba, this was extrapolated and corrected upwards to a global population estimate of 9,100 birds (Jones et al. 1995), roughly equivalent to c.6,000 mature individuals. Given nearly 30 years has passed since the creation of this estimate, it is in need of confirmation; however assuming the rate of forest loss since this time is axiomatic with population declines, it may have declined by c.6% since. Consequently, it is now estimated to number 5,600-6,000 mature individuals.

Trend justification: Though it may be partially tolerant of degradation, as a forest-dependent species it is suspected to be in decline owing to ongoing habitat loss within its range. Forest cover extent in this species' range reduced by c. 6% overall in the three generations to 2022 (Global Forest Watch 2023, based on data from Hansen et al. [2013] and methods disclosed therein), and based on losses in 2018-2022 this has accelerated slightly to an equivalent rate of c. 7% in three generations. Hunting is a potential additional threat, though this remains unconfirmed. Tentatively, declines are placed in the range 5-10% in three generations and this is suspected to continue.


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 Laiwanggi Wanggameti
Indonesia Luku Melolo
Indonesia Manupeu Tanadaru
Indonesia Poronumbu
Indonesia Tanjung Ngunju
Indonesia Yawila

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 160 - 500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming 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 Minority (<50%) Unknown Unknown
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, Ecosystem conversion
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Red-naped Fruit-dove Ptilinopus dohertyi. Downloaded from https://datazone.birdlife.org/species/factsheet/red-naped-fruit-dove-ptilinopus-dohertyi on 23/12/2024.
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 23/12/2024.