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Mauritius Owl Mascarenotus sauzieri
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This species was formerly found on Mauritius, but the logging of its forest habitat has driven it to extinction. It was last recorded in 1837, and certainly Extinct by 1859.

Taxonomic source(s)
Brooks, T. 2000. Extinct species. In: BirdLife International (ed.), Threatened birds of the world, pp. 701-708. Lynx Edicions and BirdLife International, Barcelona and Cambridge, U.K.
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.

Taxonomic note
Rothschild's Strix newtoni (Rothschild 1907) is a synonym (Mourer-Chauviré et al. 1994), as is Otus commersoni (Cheke 1987).

Distribution and population
Mascarenotus sauzieri is only known from subfossil bones from Mauritius (Mourer-Chauviré et al. 1994), and was described and sketched by a number of early travellers. Desjardins reported that it was fairly common even as late as the 1830s, but his 1837 reports were the last, and Clark specifically wrote that it was extinct in 1859 (Cheke 1987).

Desjardins reported that it inhabited the island's woods.

Deforestation, and perhaps also hunting as well as predation by introduced mammals caused its extinction.

Cheke, A. S. 1987. An ecological history of the Mascarene Islands, with particular reference to extinctions and introductions of land vertebrates. In: Diamond, A.W. (ed.), Studies of Mascarene island birds, pp. 5-89. Cambridge University Press, Cambridge, U.K.

Mourer-Chauviré, C.; Bour, R.; Moutou, F.; Ribes, S. 1994. Mascarenotus nov. gen. (Aves, Strigiformes), genre endémique éteint des Mascareignes et M. grucheti n. sp. espéce éteinte de la Réunion. Comptes Rendus de l'Academie des Sciences Paris 318: 1699-1706.

Rothschild, L. W. 1907. Extinct birds. Hutchinson & Co, London.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Brooks, T., Khwaja, N., Mahood, S.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2016) Species factsheet: Mascarenotus sauzieri. Downloaded from on 26/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 26/10/2016.

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.

Key facts
Current IUCN Red List category Extinct
Family Strigidae (Typical Owls)
Species name author (Newton & Gadow, 1893)
Links to further information
- Additional Information on this species