EN
South Philippine Hawk-eagle Nisaetus pinskeri



Taxonomy

Taxonomic note
Nisaetus philippensis and N. pinskeri (del Hoyo and Collar 2014) were previously lumped as N. philippensis following Haring et al. (2006), which before then was placed in the genus Spizaetus 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. 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
- A2cd+3cd+4cd A2cd+3cd+4cd; D1

Red List history
Year Category Criteria
2016 Endangered A2cd+3cd+4cd
2014 Endangered A2cd+3cd+4cd
2012 Not Recognised
2008 Not Recognised
2006 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 287,000 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 600-800 poor estimated 2014
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) 50-79 - - -
Decline (10 years/3 generation past and future) 50-79 - - -
Number of subpopulations 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 18.5 - - -

Population justification: The species stronghold is on Mindanao where 320-340 pairs were estimated in the late 1990s (Preleuthner and Gamauf 1998). Given that rapid declines have presumably continued since then, a preliminary population estimate is of a total of 600-800 mature individuals, roughly equating to 900-1,200 individuals.

Trend justification: Deforestation in the Philippines is reported to have been very rapid in recent decades, and it is said that the country lost c.40% of its forest cover in the 20 years between 1970 and 1990 (Uitamo 1999). Data from ESSC (Environmental Science for Social Change) suggest that the area of closed-canopy forest in the Philippines decreased by c.44% between 1987 and 2002 (Walpole 2010). Assuming rapid losses of primary forest over the past 56 years, and impacts from hunting and trapping pressure, it is likely that this species has experienced population declines of more than 50% over the past three generations.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Philippines Mount Kanla-on Natural Park
Philippines Cuernos de Negros
Philippines Mount Bandila-an
Philippines Mount Cabalantian - Mount Capoto-an complex
Philippines Mount Yacgun - Mount Sohoton complex
Philippines Biliran and Maripipi Island
Philippines Anonang-Lobi Range
Philippines Rajah Sikatuna Protected Landscape
Philippines Agusan marsh
Philippines Bislig
Philippines Mount Agtuuganon and Mount Pasian
Philippines Mount Kampalili-Puting Bato
Philippines Mount Kaluayan - Mount Kinabalian Complex
Philippines Mount Kitanglad
Philippines Kalatungan mountains
Philippines Butig mountains
Philippines Mount Sinaka
Philippines Mount Apo
Philippines Mount Daguma
Philippines Mount Matutum
Philippines Mount Busa-Kiamba
Philippines Mount Malindang
Philippines Basilan Natural Biotic Area
Philippines Samar Island Natural Park
Philippines Mount Kambinlio and Mount Redondo

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 0 - 1000 m Occasional altitudinal limits (max) 2500 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 Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Scale Unknown/Unrecorded 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 Majority (50-90%) Rapid Declines Medium Impact: 7
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%) Slow, Significant Declines Medium Impact: 6
Stresses
Reduced reproductive success, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2020) Species factsheet: Nisaetus pinskeri. Downloaded from http://www.birdlife.org on 24/09/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/09/2020.