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

Taxonomic note

Deconychura longicauda, D. typica and D. pallida (del Hoyo and Collar 2016) were previously lumped as D. longicauda following AOU (1998 & supplements), SACC (2005 & updates), Sibley & Monroe (1990, 1993) and Stotz et al. (1996).

 

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Near Threatened	A3c
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	high
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	6,350,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	inferred	2017-2028
Rate of change over the past 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Generation length	3.53 years	-	-	-
Number of subpopulations	3-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified, but it was described as uncommon to fairly common in eastern Colombia and south-east Peru, fairly common to common in Brazil but rare and local in Ecuador (del Hoyo et al. 2017), albeit inconspicuous and hard to detect (Stotz et al. 1996, Greeney et al. 2023). Given its extremely large range , there is no reason to suspect that the population size is particularly small. Estimated density in floodplain forest in southeast Peru was four mature individuals (two pairs) per square kilometre (Terborgh et al. 1990).

Trend justification: The overall population trend has not been investigated. A study in Amazonian Brazil however found that the species had disappeared from previously occupied areas with ongoing habitat loss; it did not persist in fragments smaller than 1 ha (Stouffer et al. 2009). Given that forest loss is ongoing in large parts of the range (Global Forest Watch 2023), a continuing population decline is inferred.
Within the range, 4-6% of tree cover is lost over three generations (10.6 years; Global Forest Watch 2023, using data from Hansen et al. [2013] and methods disclosed therein). This value does however not account for the impacts of habitat degradation. The species is described as particularly sensitive to habitat disturbance; it prefers the interior of continuous forests and cannot persist in small fragments (Greeney et al. 2023 and references therein). The rate of population decline may therefore greatly exceed the rate of tree cover loss. It is here tentatively placed in the band 10-19% over three generations.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bolivia	extant	native	yes
Brazil	extant	native	yes
Colombia	extant	native	yes
Ecuador	extant	native	yes
Peru	extant	native	yes
Venezuela	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Forest	Subtropical/Tropical Swamp	suitable	resident
Altitude	0 - 1700 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%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Southern Long-tailed Woodcreeper Deconychura pallida. Downloaded from https://datazone.birdlife.org/species/factsheet/southern-long-tailed-woodcreeper-deconychura-pallida on 24/11/2024.
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 24/11/2024.