LC
Simeulue Scops-owl Otus umbra



Taxonomy

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
2023 Least Concern
2016 Near Threatened B1ab(ii,iii,v);C1+2a(ii)
2012 Near Threatened B1ab(ii,iii,v);C1+2a(ii)
2008 Near Threatened B1a+b(ii,iii,v); C1; C2a(ii)
2004 Near Threatened
2000 Lower Risk/Near Threatened
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) 2,400 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 2.62 years - - -
Number of subpopulations 1 - - -

Population justification: The global population size has not been quantified, but the species is described as fairly common in forest, edge and occasionally plantations (Eaton et al. 2021).

Trend justification: Habitat loss is considered the only plausible threat to this species and there is no evidence of hunting (M. Iqbal in litt. 2023). Remote sensing data indicate minimal (<3%) forest cover loss in its range during 2012-2022 (Global Forest Watch 2023, based on data from Hansen et al. [2013] and methods disclosed therein). Moreover, it is reportedly tolerant of habitat degradation, and occurs occasionally in plantations (Eaton et al2021). In the absence of evidence for other significant threats, the population is therefore suspected to be stable.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Indonesia extant native yes

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 570 m Occasional altitudinal limits  

Threats & impact
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%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
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 (2024) Species factsheet: Simeulue Scops-owl Otus umbra. Downloaded from https://datazone.birdlife.org/species/factsheet/simeulue-scops-owl-otus-umbra on 24/12/2024.
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 24/12/2024.