• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.
Gjershaug, J.O.; Kvalfy, K.; Rfv, N.; Prawiradilaga, D.M.; Suparman, U.; Rahman, Z. 2004. The taxonomic status of Flores Hawk Eagle Spizaetus floris. Forktail 20: 55-62.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
C2a(ii)	A2cd+3cd+4cd; C2a(i,ii); D	A2cd+3cd+4cd; C2a(i,ii); D1

Red List history

Year	Category	Criteria
2016	Critically Endangered	C2a(ii)
2015	Critically Endangered	C2a(ii)
2013	Critically Endangered	C2a(ii)
2012	Critically Endangered	C2a(ii)
2009	Critically Endangered	C2a(ii)
2008	Endangered
2005	Endangered
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	85,900	medium
Number of locations	11-100	-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	100-240	medium	estimated	2004
Population trend	Decreasing	poor	estimated	-
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	1	-	-	-
Percentage in largest subpopulation	100	-	-	-
Generation length (yrs)	18.5	-	-	-

Population justification: On the basis of distances between three neighbouring territories, the species's territory size was estimated at c. 40km². Given that it is primarily dependent on forest, this implies that the total population size for the species is probably less than 100 pairs or 200 mature individuals. In addition at least 20 pairs have been estimated to occur on the island of Alor, representing another 40 mature individuals. It is estimated at 100-240 mature individuals, roughly equivalent to 150-360 individuals in total.

Trend justification: No empirical data are available, but deforestation and persecution are likely to be causing an on-going decline. Given the species's longevity scaled over the past three generations it has almost certainly experienced a very rapid decline.

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Indonesia	N	Extant	Yes

Country/Territory	IBA Name
Indonesia	Kelimutu
Indonesia	Mbeliling - Tanjung Kerita Mese
Indonesia	Nangarawa
Indonesia	Ruteng
Indonesia	Gunung Rinjani
Indonesia	Komodo - Rinca
Indonesia	Kunggwera
Indonesia	Tuti Adagae
Indonesia	Mainang
Indonesia	Tatar Sepang
Indonesia	Puncak Ngengas
Indonesia	Todo Repok
Indonesia	Wae Wuul
Indonesia	Nggorang Bowosie
Indonesia	Sesok

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	0 - 1600 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		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%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species mortality
Biological resource use	Hunting & trapping terrestrial animals - Persecution/control	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species mortality

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Pets/display animals, horticulture	-	-			Non-trivial	Recent

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Recommended citation
BirdLife International (2023) Species factsheet: Nisaetus floris. Downloaded from http://www.birdlife.org on 30/01/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/01/2023.