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

Taxonomic note

Xiphorhynchus fuscus and X. atlanticus (del Hoyo and Collar 2016) were previously lumped as X. fuscus following SACC (2005 and updates), Sibley and 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
-	-	C2a(i)

Red List history

Year	Category	Criteria
2021	Vulnerable	C2a(i)
2016	Least Concern
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)	266,000 km2	medium

	Estimate	Data quality	Derivation	Year of estimate
Population size	5000-11000 mature individuals	medium	estimated	2021
Population trend	decreasing	-	inferred	2012-2022
Rate of change over the past 10 years/3 generations (longer of the two periods)	5-10%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	5-10%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	5-10%	-	-	-
Generation length	3.3 years	-	-	-
Number of subpopulations	20-31	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: This species is described as 'fairly common to common' (del Hoyo et al. 2020). In Alagoas, the species was found in only two (13%) of 15 surveyed forest fragments (Silveira et al. 2003). It is considered common in the Serra de Baturité, Ceará (Albano and Girão 2008).

The population density has been estimated at 0.14 individuals per ha (14 individuals per km²) in the Guaribas Biological Reserve, Paraíba, in 2018-2019 (ICMBio/CEMAVE, in D. Mendes Lima in litt. 2021). Based on this density, the estimated area of tree cover with at least 75% canopy cover within the species's mapped range in 2020 (c. 5,880 km²; Global Forest Watch 2021), and assuming the tree cover to be 10-20% occupied, the population size is estimated to fall within the range 8,000 - 17,000 individuals, roughly equating to 5,000 - 11,000 mature individuals.

The subpopulation structure is not known, but based on its distribution, the species is thought to have between 20 and 31 subpopulations (ICMBio/CEMAVE 2019 in R. Subirá in litt. 2021). Studies have shown that the sister species X. fuscus is able to easily disperse short distances of 75 m between forest patches, and is able to travel at least 150 m between forest patches by using isolated trees as 'stepping stones' (Boscolo et al. 2008). If all subpopulations were of equal size, the largest may have up to 550 mature individuals, so it is reasonable to assume that the largest subpopulation is smaller than 1,000 mature individuals.

Trend justification: Remote-sensing data on tree cover loss indicates that approximately 5% of tree cover with at least 75% canopy cover was lost from within the species's mapped range over the past decade from 2010-2020 (Global Forest Watch 2021). Although this species occurs in secondary forest, it appears to prefer well-preserved habitat (Silveira et al. 2003). The species is therefore inferred to be declining. The rate of decline may be higher than indicated by the rate of forest loss due to habitat degradation. The population size is therefore suspected to be declining at a rate of 5-10% over ten years.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	0 - 700 m	Occasional altitudinal limits	(max) 1300 m

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%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	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
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Atlantic Woodcreeper Xiphorhynchus atlanticus. Downloaded from https://datazone.birdlife.org/species/factsheet/atlantic-woodcreeper-xiphorhynchus-atlanticus on 22/12/2024.
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 22/12/2024.