• 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., 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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2022	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,790 km2	medium
Area of Occupancy (breeding/resident)	2,200 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-9999 mature individuals	poor	suspected	2021
Population trend	stable	-	suspected	-
Generation length	3.05 years	-	-	-
Number of subpopulations	2-10	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. 1996). In view of its small range, it is conceivable that the population numbers below 10,000 mature individuals; it is here tentatively placed in the band 2,500-9,999 mature individuals.
Based on the spatial spread of records (per eBird 2021) the species likely forms at least two subpopulations.

Trend justification: Due to the species's preference for secondary and bushy vegetation along forest edges, there is no evidence that either population size or habitat availability are currently in decline. Tree cover loss is negligible within the range (1% over ten years; Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). The species is suspected to be stable and not at risk.

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

Country/Territory	IBA Name
Venezuela	Henri Pittier National Park (Parque Nacional Henri Pittier IBA)
Venezuela	Monumento Natural Pico Codazzi
Venezuela	Parque Nacional El Ávila and surrounding areas
Venezuela	Parque Nacional Macarao
Venezuela	Parque Nacional San Esteban

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Subtropical/Tropical Moist	suitable	resident
Altitude	1300 - 2200 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Black-throated Spinetail Synallaxis castanea. Downloaded from https://datazone.birdlife.org/species/factsheet/black-throated-spinetail-synallaxis-castanea on 23/12/2024.
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 23/12/2024.