EN
Flores Scops-owl Otus alfredi



Taxonomy

Taxonomic note
Otus magicus and O. tempestatis (del Hoyo and Collar 2014) were previously lumped as O. magicus, and O. alfredi, O. siaoensis, O. enganensis, O. insularis and O. beccarii (del Hoyo and Collar 2014) were split from O. magicus following Widodo et al. (1999), Lambert and Rasmussen (1998), Andrew (1992) and Holt et al. (1999). Prior to that all these taxa were lumped in O. magicus following Sibley and Monroe (1990, 1993).

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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
Widodo, W.; Cox, J. H.; Rasmussen, P. C. 1999. Rediscovery of the Flores Scops Owl Otus alfredi on Flores, Indonesia, and reaffirnation of its specific status. Forktail 15: 15-23.
Widodo, W.; Cox, J. H.; Rasmussen, P. C. 1999. Rediscovery of the Flores Scops Owl Otus alfredi on Flores, Indonesia, and reaffirnation of its specific status. Forktail 15: 15-23.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- B1ab(ii,iii,iv,v); C2a(ii) B1ab(ii,iii,iv,v); C2a(i,ii); D1

Red List history
Year Category Criteria
2016 Endangered B1ab(ii,iii,iv,v);C2a(ii)
2013 Endangered B1ab(ii,iii,iv,v);C2a(ii)
2012 Endangered B1ab(ii,iii,iv,v);C2a(ii)
2008 Endangered B1a+b(ii,iii,iv,v); C2a(ii)
2004 Endangered
2000 Endangered
1994 Not Evaluated
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 3,500 km2 medium
Number of locations 2-5 -
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 250-2499 mature individuals poor estimated 2000
Population trend decreasing poor suspected 2011-2022
Rate of change over the past 10 years/3 generations (longer of the two periods) 10-19% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 10-19% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 10-19% - - -
Generation length 3.7 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: The population is estimated to number in the low hundreds or the low thousands based on an analysis of historical and recent records and surveys. An estimate derived from density data from congeners, and data on the species's Extent of Occurrence, suggests the population numbers 250-2,499 mature individuals. This is roughly equivalent to 370-3,800 individuals in total.

Trend justification: Much habitat below 1,300 m has now been destroyed, yet forest continues to be lost and as a result the species is suspected to be declining at a moderate rate.


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 Ruteng
Indonesia Todo Repok

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 1000 - 1400 m Occasional altitudinal limits  

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 Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Flores Scops-owl Otus alfredi. Downloaded from https://datazone.birdlife.org/species/factsheet/flores-scops-owl-otus-alfredi on 23/12/2024.
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 23/12/2024.