• 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
-	-	-

Red List history

Year	Category	Criteria
2019	Near Threatened	C2a(i)
2016	Vulnerable	B1ab(i,ii,iii,v)
2012	Vulnerable	B1ab(i,ii,iii,v)
2008	Vulnerable	B1a+b(i,ii,iii)
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Threatened

Migratory status	not a migrant	Forest dependency	high
Land-mass type	continent	Average mass	19 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	51,200 km2	medium
Number of locations	6-10	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	13000-35000 mature individuals	poor	suspected	2008
Population trend	decreasing	-	inferred	2014-2025
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	3.7 years	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population size was previously placed in the band 20,000-49,999 individuals. This roughly equates to 13,000-35,000 mature individuals. Extrapolating recorded densities across the species's range (assuming 10% of its mapped range is likely to be occupied) gives a preliminary population estimate of 21,970 individuals. Based on an observed density of 13-15 individuals per km² (Cárdenas et al. 2008, Fierro-Calderón et al. 2009), Renjifo et al. (2014) report a population of 26,000 individuals, equating to c.17,000 mature individuals. However, the density used by Renjifo et al. (2014) came from places where the species is presumably most abundant, acknowledging that the estimate given might be too high. Therefore, it is tentatively assumed that the true population size may be closer to the lower estimate of 13,000 mature individuals. Furthermore, it has been suggested that no subpopulation consists of more than 1,000 mature individuals (Renjifo et al. 2014).

Trend justification: The population is thought to be in decline owing to ongoing habitat destruction, but the trend has not been estimated directly. Deforestation data from between 2000 and 2012 (Tracewski et al. 2016) suggest that the area of suitable habitat for the species on average is declining by c.3.4% over three generations (11.1 years). It is here tentatively assumed that the rate of population decline is roughly equivalent to the rate of forest loss and continuing at the same pace. Therefore, the species is inferred to decline at < 10% 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 de Pisones
Colombia	Bosque de San Antonio/Km 18
Colombia	Bosques del Oriente de Risaralda
Colombia	Cañón del Río Barbas y Bremen
Colombia	Farallones de Cali Natural National Park
Colombia	La Forzosa-Santa Gertrudis
Colombia	Parque Nacional Natural Tatamá
Colombia	Reserva Forestal Yotoco
Colombia	Reserva Natural Tambito
Colombia	Selva de Florencia

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1300 - 2200 m	Occasional altitudinal limits	(min) 900 m

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 - 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%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Multicolored Tanager Chlorochrysa nitidissima. Downloaded from https://datazone.birdlife.org/species/factsheet/multicolored-tanager-chlorochrysa-nitidissima 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.