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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | B1ab(ii,iii) |
Year | Category | Criteria |
---|---|---|
2022 | Vulnerable | B1ab(ii,iii) |
2016 | Vulnerable | B1ab(iii,v);C2a(i) |
2013 | Vulnerable | B1ab(iii,v);C2a(i) |
2012 | Vulnerable | B1ab(iii,v);C2a(i) |
2008 | Endangered | B1a+b(iii,v) |
2004 | Endangered | |
2000 | Endangered | |
1996 | Endangered | |
1994 | Endangered | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 18,200 km2 | medium |
Area of Occupancy (breeding/resident) | 14,000 km2 | |
Number of locations | 6-10 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 10000-19999 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 | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The species can locally reach high densities of 102 individuals/km2 (Kattan and Beltrán 1999, Renjifo et al. 2014). Assuming that about one-third of suitable habitat is occupied, the population was estimated at roughly 50,000 individuals (Renjifo et al. 2014), which equates to 33,000 mature individuals. This population size value is however described as a potential overestimate (Renjifo et al. 2014) and therefore precautionarily the population is here placed in the band 10,000-19,999 mature individuals.
Trend justification: A slow and ongoing population decline is suspected as a consequence of habitat loss. Within the range, tree cover is lost at a rate of 3% over three generations (12.2 years; Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Despite being restricted to forest, the species appears to tolerate some habitat degradation (Kattan and Beltrán 1999, Greeney 2020) and population declines are therefore tentatively placed in the band 1-9% over three generations.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Colombia | extant | native | yes |
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 | Reserva Hidrográfica, Forestal y Parque Ecológico de Río Blanco |
Colombia | Reserva Natural Ibanasca |
Colombia | Reservas Comunitarias de Roncesvalles |
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 | major | resident |
Altitude | 1460 - 3450 m | Occasional altitudinal limits |
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 | ||||||
|
|||||||||
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Brown-banded Antpitta Grallaria milleri. Downloaded from
https://datazone.birdlife.org/species/factsheet/brown-banded-antpitta-grallaria-milleri on 03/12/2024.
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 03/12/2024.