Narrow-tailed Emerald (Chlorostilbon stenurus)

Narrow-tailed Emerald Chlorostilbon stenurus

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Very similar to and apparently sympatric with C. alice. Subspecies ignotus sometimes considered synonymous with alice, or treated as a hybrid. Birds of Colombia have been separated as subspecies acuticaudus, but regarded as doubtfully valid. Two subspecies recognized.

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.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

Migratory status	not a migrant	Forest dependency	medium
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	128,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	2.07 years	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified. Density descriptions range from uncommon in Colombia (Hilty 2021) to fairly common or common (Stotz et al. 1996, Bündgen and Boesman 2020).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/territory distribution

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

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Colombia	Bosques Secos del Valle del Río Chicamocha
Colombia	Soatá
Venezuela	Parque Nacional Guaramacal
Venezuela	Parque Nacional Páramos Batallón y La Negra and surrounding areas
Venezuela	Parque Nacional Sierra La Culata
Venezuela	Parque Nacional Sierra Nevada

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Shrubland	Subtropical/Tropical Moist	suitable	resident
Altitude	750 - 3000 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Narrow-tailed Emerald Chlorostilbon stenurus. Downloaded from https://datazone.birdlife.org/species/factsheet/narrow-tailed-emerald-chlorostilbon-stenurus 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.