LC
Grey-crowned Tit Aegithalos annamensis



Taxonomy

Taxonomic note

Aegithalos concinnus, A. iredalei and A. annamensis (del Hoyo and Collar 2016) were previously lumped as A. concinnus following Sibley and Monroe (1990, 1993).

 

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.

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 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency medium
Land-mass type Average mass 6 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 109,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 2.13 years - - -

Population justification: The global population size has not been quantified, but the pre-split species is reported to be fairly common to abundant (Harrap and Quinn 1996). The population is suspected to be stable in the absence of evidence for any declines or substantial threats. This species' population in Laos is considered to be of high importance globally, with trends in this country (low to negligible) similar to those found in the species' previous global assessment (Timmins et al. 2024). This species is considered to have a medium dependency on forest habitat, which is estimated to be declining at a slow rate (Global Forest Watch 2024).

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
Cambodia extant native yes
Laos extant native yes
Vietnam extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Laos Dakchung Plateau
Laos Dong Ampham
Laos Phou Ahyon
Laos Xe Sap

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Forest Temperate major resident
Shrubland Subtropical/Tropical Moist suitable resident
Shrubland Temperate suitable resident
Altitude 600 - 3600 m Occasional altitudinal limits  

Utilisation
Purpose Scale
Food - human subsistence, national
Pets/display animals, horticulture subsistence, national

Recommended citation
BirdLife International (2025) Species factsheet: Grey-crowned Tit Aegithalos annamensis. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-crowned-tit-aegithalos-annamensis on 13/01/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 13/01/2025.