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

Taxonomic note

Picus canus, P. guerini and P. dedemi (del Hoyo and Collar 2014) were previously lumped as P. canus 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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2023	Near Threatened	C2a(ii)
2016	Near Threatened	A2c+3c+4c
2014	Near Threatened	A2c+3c+4c
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	medium
Land-mass type		Average mass	137 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	241,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-9999 mature individuals	poor	suspected	2022
Population trend	decreasing	-	suspected	-
Generation length	3.06 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population size of this species has not been estimated. Although it has an ostensibly large range, within which there is c.25,000 km² of forest (Hansen et al. 2013, Global Forest Watch 2023), P. dedemi appears to be a scarce and thinly distributed species. In recent years, there have been records from only the north and centre of its mapped range (Eaton et al. 2021, eBird 2023) and even here it is notably localised, with few records away from established locales, even in well-explored areas of suitable habitat. Precautionarily, it is assumed to have a moderately small population numbering 2,500-9,999 mature individuals, although surveys are urgently needed to confirm or refute this suspicion.

Trend justification: This species shows some tolerance to localised habitat loss and degradation, rendering the calculation of a quantified population trend difficult in the absence of direct data. The main threat (forest loss) is, however, ongoing (per Global Forest Watch 2023) and its requirement for tree hollows to nest in suggests it may be vulnerable to larger-scale clearances of habitat. Accordingly, it is precautionarily suspected to be in decline, although this requires confirmation.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Indonesia	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1000 - 2000 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 degradation, Ecosystem conversion
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
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
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

Purpose	Scale
Pets/display animals, horticulture	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Sumatran Woodpecker Picus dedemi. Downloaded from https://datazone.birdlife.org/species/factsheet/sumatran-woodpecker-picus-dedemi on 28/11/2024.
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 28/11/2024.