LC
Collared Owlet Glaucidium brodiei



Taxonomy

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: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip.

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 -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 10,470,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 0
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -

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 Occurrence status Presence Resident Breeding Non-breeding Passage
Afghanistan N Possibly Extinct
Bangladesh U Extant
Bhutan N Extant Yes
Cambodia N Extant Yes
China (mainland) N Extant Yes
India N Extant Yes
Laos N Extant Yes
Malaysia N Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
Pakistan N Extant Yes
Taiwan, China N Extant Yes
Thailand N Extant Yes
Vietnam N Extant 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
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%) No decline 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, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Glaucidium brodiei. Downloaded from http://www.birdlife.org on 01/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 01/12/2022.