• 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(ii,iii)

Red List history

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
		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
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation

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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 23/11/2024.
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 23/11/2024.