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This inconspicuous and extremely poorly known forest owl is judged to qualify for Endangered because it has a very small range, and hence presumably a very small population, both of which are undergoing continuing declines on the single island it is known to inhabit. The primary factor underlying this trend is extensive logging, a threat that is set to intensify as most remaining lowland forest on the island is under timber concession.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
31-32 cm. Medium-sized, forest-dwelling owl. Female has dark brown upperparts with lines of small white spots. Dark and unbarred wings, secondaries with whitish tips, brown tail with three dark bars. Golden-brown underparts, spotted and vermiculated black. Black iris. Male presumably similar but undescribed. Similar spp. Brown Hawk-owl Ninox scutulata is smaller with yellow irides, streaked underparts and barred tail. Voice a hissing sound typical of the genus (Rheindt 2010).
Davidson, P.; Stones, A.; Lucking, R.; Bean, N.; van Balen, B.; Raharjaningtrah, W.; Banjaransari, H. 1991. University of East Anglia Taliabu expedition 1991.
BirdLife International. 2001. Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.
Rheindt, F. E. 2010. New biogeographic records for the avifauna of Taliabu (Sula Islands, Indonesia), with preliminary documentation of two previously undiscovered taxa. Bulletin of the British Ornithologists' Club 130(1): 33-51.
Text account compilers
Allinson, T, Benstead, P., Bird, J., Davidson, P., Taylor, J., Tobias, J.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2013) Species factsheet: Tyto nigrobrunnea. Downloaded from http://www.birdlife.org on 25/05/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
|Current IUCN Red List category||Endangered|
|Family||Tytonidae (Barn owls)|
|Species name author||Neumann, 1939|
|Population size||250-999 mature individuals|
|Distribution size (breeding/resident)||2,900 km2|
|Links to further information|
|- Additional Information on this species|