• 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
D	D	D1

Red List history

Year	Category	Criteria
2021	Critically Endangered	D
2019	Critically Endangered	D
2016	Critically Endangered	D
2015	Critically Endangered	D
2013	Critically Endangered	D
2012	Critically Endangered	D
2010	Critically Endangered	D1
2009	Critically Endangered	D1
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	320 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1-49 mature individuals	medium	estimated	2019
Population trend	unknown	-	-	-
Generation length	3.3 years	-	-	-
Number of subpopulations	2	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: Until recently, the species was only known from three specimens; the most recent date of collection was in 1971. In January 2018, the species was rediscovered in the municipality of San Pedro de los Milagros near Medellín (Correa-Peña et al. 2019).
So far, fewer than 20 individuals in four sites near San Pedro de los Milagros have been identified (American Bird Conservancy 2019, Proyecto Atlapetes 2020). A second subpopulation further north in Llanos de Cuivá and Santa Rosa de Osos is probably of a similar size (S. Chaparro-Herrera in litt. 2020). The total population is likely very small, and is thus here placed in the band <50 mature individuals.

Trend justification: There is no information on the population trend.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Subtropical/Tropical Moist	major	resident
Altitude	2500 - 2900 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Unknown		Unknown
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Unknown		Unknown
		Stresses Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Molothrus bonariensis	Timing		Scope		Severity		Impact
		Unknown		Unknown		Unknown		Unknown
		Stresses Reduced reproductive success

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Recommended citation
BirdLife International (2024) Species factsheet: Antioquia Brushfinch Atlapetes blancae. Downloaded from https://datazone.birdlife.org/species/factsheet/antioquia-brushfinch-atlapetes-blancae 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.