Otus balli 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Strigiformes Strigidae

Scientific Name: Otus balli
Species Authority: (Hume, 1873)
Common Name(s):
English Andaman Scops-owl, Andaman Scops-Owl, Andaman Scops Owl
Spanish Autillo de Andamán
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.

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Benstead, P., Bird, J., Taylor, J.
This species is listed as Near Threatened because it has a small range, within which habitat is declining in quality and extent. However, the species is not restricted to a few locations and is tolerant of considerable habitat modification and so it is not considered to be severely fragmented and is thus not regarded as more threatened. 

Previously published Red List assessments:
2008 Near Threatened (NT)
2004 Near Threatened (NT)
2000 Lower Risk/near threatened (LR/nt)
1994 Lower Risk/near threatened (LR/nt)
1988 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: Otus balli is an endemic resident in the Andaman islands, India, where it was common, at least early in the twentieth century (BirdLife International 2001). Its current status is unclear, although it appears to be easily found and therefore probably common. There seems little reason to expect its population to be under immediate threat given its tolerance of disturbed areas.

Countries occurrence:
Continuing decline in area of occupancy (AOO): Unknown
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 5800
Continuing decline in extent of occurrence (EOO): Unknown
Extreme fluctuations in extent of occurrence (EOO): No
Continuing decline in number of locations: Unknown
Extreme fluctuations in the number of locations: No
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population size has not been quantified, but the species is described as not uncommon (Konig et al. 1999).

Trend Justification:  The population is suspected to be in decline owing to on-going habitat destruction.
Current Population Trend: Decreasing
Additional data:
Number of mature individuals: Unknown Continuing decline of mature individuals: Unknown
Extreme fluctuations: No Population severely fragmented: No
Continuing decline in subpopulations: Unknown
Extreme fluctuations in subpopulations: No All individuals in one subpopulation: No

Habitat and Ecology [top]

Habitat and Ecology: It occurs in trees in semi-open or cultivated areas and around human settlements. It feeds at night on insects and nests in February-April.

Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Unknown
Generation Length (years): 3.7
Movement patterns: Altitudinal Migrant

Threats [top]

Major Threat(s): Forest loss is accelerating on the Andamans, owing to development of the coastline and possibly small-scale agricultural encroachment.

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
CITES Appendix II.

Conservation Actions Proposed
Protect some areas of lowland forest within the species's range. Enforce restrictions on agricultural encroachment and logging within such protected areas. Compare population densities in human-modified areas and natural forest, and generate a revised population estimate for the species. Encourage developments to be sensitive to the species; it could easily occur within resorts.

Citation: BirdLife International. 2012. Otus balli. The IUCN Red List of Threatened Species 2012: e.T22688573A38008526. . Downloaded on 28 November 2015.
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