This species is restricted to a small island and is very poorly known. Comparison with the congeneric Australian Masked-owl T. novaehollandiae suggests that it probably occurs at low densities and therefore has a very small population which is likely to be declining owing to habitat loss. For these reasons it is classified as Vulnerable. Clarification of its likely subpopulation structure may lead to its uplisting to Endangered in the near future
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
33 cm. Poorly known, medium-sized forest-dwelling owl. Identified by combination of dark upperparts, black tail with narrow yellowish-brown bars and buff underparts with large blackish spots. Similar spp. No other masked-owl in its range. Voice Reported to be duller and harsher than Bismarck Masked-owl T. aurantia.
Beehler, B. M. 1993. Biodiversity and conservation of the warm-blooded vertebrates of Papua New Guinea. In: Beehler, B.M. (ed.), Papua New Guinea - conservation needs assessment, pp. 77-121. Biodiversity Support Program, Washington, DC.
Dutson, G. C. L.; Newman, J. L. 1991. Observations on the Superb Pitta Pitta superba and other Manus endemics. Bird Conservation International 1: 215-222.
Higgins, P. J. 1999. Handbook of Australian, New Zealand and Antarctic birds: parrots to dollarbirds. Oxford University Press, Oxford, U.K.
König, C.; Weick, F.; Becking, J.-H. 1999. Owls: a guide to the owls of the world. Pica Press, Robertsbridge, U.K.
Steadman, D. W.; Kirch, P. V. 1998. Biogeography and prehistoric exploitation of birds in the Mussau islands, Bismarck Archipelago, Papua New Guinea. Emu 98: 13-22.
Further web sources of information
View photos and videos, and hear sounds of this species from the Internet Bird Collection
Text account compilers
Benstead, P., Derh, M., Dutson, G., Mahood, S., O'Brien, A.
Beck, R., Dutson, G., Gibbs, D., Gregory, M., Hamilton, S., Williams, A., Gregory, P.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2013) Species factsheet: Tyto manusi. Downloaded from http://www.birdlife.org on 10/12/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/12/2013.
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
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|Current IUCN Red List category||Vulnerable|
|Family||Tytonidae (Barn owls)|
|Species name author||Rothschild & Hartert, 1914|
|Population size||250-999 mature individuals|
|Distribution size (breeding/resident)||1,900 km2|
|Links to further information|
|- Additional Information on this species|