• 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
-	B1ab(i,ii,iii,iv,v); C2a(i)	B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); C2a(i); D1

Red List history

Year	Category	Criteria
2022	Endangered	B1ab(i,ii,iii,iv,v); C2a(i)
2016	Endangered	B1ab(i,ii,iii,iv,v);C2a(ii)
2012	Endangered	B1ab(i,ii,iii,iv,v);C2a(ii)
2011	Endangered	B1a+b(i,ii,iii,iv,v)
2008	Vulnerable	D2
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,400 km2	medium
Area of Occupancy (breeding/resident)	756 km2
Number of locations	2-5	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	330-800 mature individuals	medium	estimated	2011
Population trend	decreasing	poor	inferred	2015-2027
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-5%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	4.06 years	-	-	-
Number of subpopulations	2-10	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: Recent surveys recorded the species at a density of 2-3 birds/km²; estimates based on this data place the population at 500-1,200 individuals (O. Cortes in litt. 2012), roughly equivalent to 330-800 mature individuals.

Trend justification: Habitat loss, degradation and disturbance in its range suggest that the population has undergone a decline (O. Cortes in litt. 2011). The Farallones de Medina and Monterredondo areas have now been partly deforested (P. G. W. Salaman in litt. 1999, 2003; Renjifo et al. 2014), and subsequent searches there have failed to record the species (O. Cortes in litt. 2012).
Over the past three generations (12.2 years), tree cover loss within the range has been very low (1% over three generations; Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein) and as such habitat loss has unlikely been driving a rapid population decline. Tentatively it is suspected that declines over the past three generations did not exceed 5%. However, projections of habitat loss as a consequence of deforestation suggest that between 2015 and 2040 the species may lose 46% of suitable habitat (Negret et al. 2021), which equates to 26% over three generations. Given that the species is strictly dependent on montane forests (Greeney 2020), it is tentatively suspected that population declines are roughly equivalent to the rate of habitat loss. Consequently, the population may be declining by 20-29% over the next three generations.

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

Country/Territory	IBA Name
Colombia	Cañón del Río Guatiquía

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1200 - 2700 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		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Agriculture & aquaculture	Wood & pulp plantations - Small-holder plantations	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses 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

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Recommended citation
BirdLife International (2024) Species factsheet: Cundinamarca Antpitta Grallaria kaestneri. Downloaded from https://datazone.birdlife.org/species/factsheet/cundinamarca-antpitta-grallaria-kaestneri 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.