Collared Owlet Glaucidium brodiei


Taxonomic note
Glaucidium brodiei (del Hoyo & Collar 2014) previously included as subspecies sylvaticum and borneense, now split as Sunda Owlet (which see). Sometimes considered part of a species-group centred on G. passerinum (which see). Pale island form pardalotum distinctive. Proposed subspecies garoense (from W Meghalaya, in NE India) included in nominate. Name peritum is a synonym of sylvaticum. Two subspecies recognized.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2021. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at:

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2021 Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 10,470,000 km2
Severely fragmented? no -
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected -
Generation length 2.57 years - - -

Population justification: Described as common throughout its range (König and Weick 2008). No density estimates are available for this species (or any of its Asian congeners) and so a population size has not been estimated. Given the size of its vast range however, it is not considered likely to approach the thresholds (<10,000 mature individuals) for listing as threatened.

Trend justification: Forest loss in this species's range has been equal to c.8% over the last 10 years (Global Forest Watch 2021), and this rate is expected to continue. However, this species is very tolerant of degradation and occurs even in cultivated areas (albeit perhaps at lower densities [König and Weick 2008]) and so while the species is suspected to be declining, it is probably doing so at a slow rate.

Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Afghanistan possibly extinct native
Bangladesh extant uncertain
Bhutan extant native yes
Cambodia extant native yes
China (mainland) extant native yes
India extant native yes
Laos extant native yes
Malaysia extant native yes
Myanmar extant native yes
Nepal extant native yes
Pakistan extant native yes
Taiwan, China extant native yes
Thailand extant native yes
Vietnam extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land marginal unset
Forest Subtropical/Tropical Moist Montane major resident
Forest Temperate major resident
Shrubland Subtropical/Tropical High Altitude suitable unset
Shrubland Temperate suitable resident
Altitude 1350 - 2750 m Occasional altitudinal limits 700 - 2900 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
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
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Glaucidium brodiei. Downloaded from on 23/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from on 23/02/2024.