VU
Papuan Eagle Harpyopsis novaeguineae



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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - C2a(ii)

Red List history
Year Category Criteria
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 Land-mass type - shelf island
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,200,000 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 2500-9999 medium estimated 2016
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) 10-19 - - -
Decline (10 years/3 generation past and future) 10-19 - - -
Number of subpopulations 1 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 18 - - -

Population justification: Watson and Asoyama (2001) estimated the density at Crater Mountain Wildlife Management Area to be one pair per 150 km2 based on an estimated average territory size of 20 km2 in optimal habitat, but largely absent from areas of cultivation around villages, areas where suitable prey had been hunted out, and scrubby areas above approximately 2800 m. There was about 240,000 km2 of rainforest in mainland New Guinea (Bryan and Shearman 2015). This suggests a global population of about 1600 pairs but as some of the Crater Wildlife Management Area is not rainforest, and the species has also been recorded at lower densities in monsoon forest, the population is probably higher, perhaps around 2000 pairs.

Trend justification: There are no direct data on population trends but about 1.2% of forest was lost plus 2.4% logged on mainland Papua New Guinea between 2002-2014 (Bryan and Shearman 2015) suggesting a decline of 10-20% over three generations (54 years).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Indonesia N Extant Yes
Papua New Guinea N Extant 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 Moist Montane major resident
Savanna Dry suitable resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 2000 m Occasional altitudinal limits (max) 3700 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops 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 Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Species mortality
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Species disturbance, Other
Biological resource use Logging & wood harvesting 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
Wearing apparel, accessories Whole Adults and juveniles Wild Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Harpyopsis novaeguineae. Downloaded from http://www.birdlife.org on 20/10/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/10/2019.