LC
Bicolored Antpitta Grallaria rufocinerea



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: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2022 Least Concern
2016 Vulnerable B1ab(i,ii,iii,v);C2a(i)
2012 Vulnerable B1ab(i,ii,iii,v);C2a(i)
2008 Vulnerable B1a+b(i,ii,iii,v); C2a(i)
2004 Vulnerable
2000 Vulnerable
1996 Endangered
1994 Endangered
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 89,500 km2 medium
Area of Occupancy (breeding/resident) 22,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 20000-49999 mature individuals poor estimated 2014
Population trend decreasing poor suspected 2016-2028
Rate of change over the past 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 1-9% - - -
Generation length 4.06 years - - -
Number of subpopulations 2-100 - - -
Percentage of mature individuals in largest subpopulation 1-89% - - -

Population justification: The population density has been assessed in various parts of the range: In the Alto Quindió-Acaime Reserve, 1.5-6 individuals were found along 10-km transects, in Ucumarí Regional Park it occurs at a density of 0.8 individuals/ha, while in Caldas a density of 0.9 individuals/km2 were estimated (Renjifo et al. 2014 and references therein). Based on these values, and assuming that one-third of the available habitat is occupied, the population was estimated at roughly 117,000 individuals (Renjifo et al. 2014). This is equivalent to around 78,000 mature individuals. However, this value may well be an overestimation (Renjifo et al. 2014) and therefore, the population is here tentatively placed in the band 20,000-49,999 mature individuals, though this requires confirmation.

Trend justification: The population is suspected to be declining slowly, in line with rates of habitat loss within its range. Within the range, tree cover is lost at a rate of up to 2% over three generations (12.2 years; Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The rate of habitat loss is given as 6.25% over ten years (Renjifo et al. 2014), which equates to 7.6% over three generations. Given the species' apparent tolerance of degradation and disturbance, the rate of population decline is unlikely to exceed the rate of habitat loss; it is here tentatively placed in the band 1-9% over three generations.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Alto Quindío
Colombia Bosques del Oriente de Risaralda
Colombia Cuenca del Río Toche
Colombia Páramos y Bosques Altoandinos de Génova
Colombia Puracé Natural National Park
Colombia Reservas Comunitarias de Roncesvalles
Ecuador La Bonita-Santa Bárbara

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 1790 - 4270 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Agro-industry grazing, ranching or 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%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, 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
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion

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