• 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. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions 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
-	-	-

Red List history

Year	Category	Criteria
2019	Near Threatened	B1ab(iii,v)+2ab(iii,v)
2016	Endangered	B1ab(iii)
2012	Endangered	B1ab(iii)
2009	Endangered	B1a+b(iii)
2008	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Endangered
1994	Endangered
1988	Threatened

Migratory status	altitudinal migrant	Forest dependency	medium
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	11,500 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	10000-19999 mature individuals	medium	estimated	2019
Population trend	decreasing	poor	suspected	-
Generation length	3.4 years	-	-	-
Number of subpopulations	2	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: This species has been recorded at a number of new sites in recent years. While still apparently rare in some areas and nowhere abundant, there is a comparatively large area of potentially suitable habitat. Based on the area of the species’s mapped range (4,949km²), a range of recorded population densities (10, 33, 60, 140 and 210 individuals/km²; Cortes-Herrera 2006, D. C. Sabogal in litt. 2009, Peñuela and Archila 2010, Renjifo et al. 2016), and assuming that 11-22% of the range is occupied, the species’s population size is estimated to fall within the range 18,600 – 66,300 individuals, roughly equivalent to 12,400 – 44,200 mature individuals. The national Red List of Colombia estimated the population size at 24,120 individuals (Renjifo et al. 2016), roughly equivalent to 16,080 mature individuals. The population size is therefore here placed in the band 10,000-19,999 mature individuals. However, a recent analysis based on land cover data and a population density model estimated the population size at 117,733 mature individuals (Santini et al. 2019); if this number is confirmed the population size estimate will need to be adjusted accordingly. The species is thought to form at least two subpopulations, since the record in the Serranía de San Lucas (Donegan 2012) is quite distant from the other recent records.

Trend justification: The population trend has not been assessed directly, and it is unclear whether the population size and availability of habitat are declining. A recent analysis of forest loss data from 2000-2012 indicated that forest was lost within the species’s range at a rate equivalent to 1% across three generations (Tracewski et al. 2016). However, this species inhabits forest edges and shrubland, so forest loss may not be a reliable indicator of population change or habitat quality for this species. An analysis of area of habitat and population size based on modelled population densities and remote-sensed land cover data estimated that the species’s area of habitat and population has slightly increased over three generations (Santini et al. 2019). The national Red List of Colombia also estimated an increase in available habitat between 2001 and 2011 (Renjifo et al. 2016). Nevertheless, there may be some habitat degradation, for example from logging, and the population may be impacted by hunting as well as habitat degradation (Renjifo et al. 2016). Therefore, unless new information on the population trend becomes available, the species is precautionarily retained as in decline.

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

Country/Territory	IBA Name
Colombia	Bosques Secos del Valle del Río Chicamocha
Colombia	Soatá

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Pastureland	suitable	resident
Artificial/Terrestrial	Plantations	suitable	resident
Artificial/Terrestrial	Rural Gardens	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Subtropical/Tropical Moist	suitable	resident
Altitude	340 - 2200 m	Occasional altitudinal limits	(min) 120 m

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%)		Negligible declines		Low Impact: 4
		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%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality
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
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
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

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Chestnut-bellied Hummingbird Saucerottia castaneiventris. Downloaded from https://datazone.birdlife.org/species/factsheet/chestnut-bellied-hummingbird-saucerottia-castaneiventris on 22/12/2024.
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 22/12/2024.