• 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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	C2a(ii)

Red List history

Year	Category	Criteria
2021	Vulnerable	C2a(ii)
2018	Vulnerable	C2a(i)
2016	Vulnerable	C2a(i)
2012	Vulnerable	C2a(i)
2008	Vulnerable	C1; C2a(i)
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	69,200	medium
Number of locations		-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	2500-9999	medium	estimated	2010
Population trend	Decreasing	poor	inferred	-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)	1-9	-	-	-
Decline (10 years/3 generation past and future)	1-9	-	-	-
Number of subpopulations	1	-	-	-
Percentage in largest subpopulation	100	-	-	-
Generation length (yrs)	4.48	-	-	-

Population justification: There have been few records, despite several surveys taking place in New Britain (Lecroy & Peckover 1983, Bishop & Jones 2001, Davis et al. 2018), suggesting that the species is localised and occurs at low population densities. From 415 hours of survey effort in New Britain in 1997-1998 and in 2010, the species was only observed once (Davis et al. 2018). However, it was recorded on four out of 13 days of surveys in forest on New Ireland (Beehler et al. 2001), so it may be more common in montane forest there, although the area of habitat is much smaller than on New Britain. Based on the area of habitat, the population has been estimated as 2,500-10,000 mature individuals (Buchanan et al. 2008, Davis et al. 2018), although it may be smaller (Davis et al. 2018).

Since congeners have been recorded crossing between islands (Mayr and Diamon 2001), the species is expected to be able to cross the 25 km between New Britain and New Ireland, and so is considered to have a single subpopulation (Davis et al. 2018).

Trend justification: Remote-sensed data on tree cover indicates that approximately 7% of tree cover with at least 50% canopy cover was lost within the species's mapped range over three generations (13 years) from 2006-2019 (Global Forest Watch 2020). Since the species is thought to have a high level of forest dependency (Buchanan et al. 2008), it is inferred that the population size is undergoing a continuing decline. The impact on the species's population size is not known, but based on the rate of deforestation, the species is suspected to have undergone a reduction of 1-9% over the past three generations. Assuming deforestation continues at a similar rate into the future, the species is suspected to undergo a similar reduction in population size over the next three generations.

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Papua New Guinea	N	Extant	Yes

Country/Territory	IBA Name
Papua New Guinea	Gloucester Volcanics
Papua New Guinea	Arawe
Papua New Guinea	Whiteman Range
Papua New Guinea	Baining Mountains
Papua New Guinea	Nakanai Central Pomio
Papua New Guinea	Lelet Plateau
Papua New Guinea	Cape St George (Last Corner)

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	0 - 1800 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation

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

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Recommended citation
BirdLife International (2022) Species factsheet: Accipiter brachyurus. Downloaded from http://www.birdlife.org on 26/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 26/06/2022.