EN
Cundinamarca Antpitta Grallaria kaestneri



Taxonomy

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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
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
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,400 medium
Extent of Occurrence breeding/resident (km2) 756
Number of locations 2-5 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 330-800 medium estimated 2011
Population trend Decreasing poor inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 20-29 - - -
Decline (10 years/3 generation past and future) 20-29 - - -
Number of subpopulations 2-10 - - -
Percentage in largest subpopulation 1-89 - - -
Generation length (yrs) 4.06 - - -

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 distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Colombia N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Cañón del Río Guatiquía

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 1200 - 2700 m Occasional altitudinal limits  

Threats & impact
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

Recommended citation
BirdLife International (2023) Species factsheet: Grallaria kaestneri. Downloaded from http://www.birdlife.org on 21/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/03/2023.