Mantanani scops owl
|Mantanani scops owl|
The Mantanani scops owl (Otus mantananensis), is a small owl in the scops-owl genus Otus found on small islands between Borneo and the Philippines. It is listed by the IUCN as "near threatened" because its range is limited with its population being fragmented on several different islands, and its forest habitat is being degraded by ongoing logging and clearance.
Various subspecies have been described, including the nominate from the Mantanani Islands, and O. m. sibutuensis (Sharpe, 1893) from the Sulu islands. It has sometimes been considered to be a race of the Eurasian scops owl or the oriental scops owl.
This owl is about 180 mm long, with a wing length of about 155 mm. It has a buff facial disk with a narrow, dark border. It has dark brown upperparts with pale markings on the scapulars, and pale underparts with dark streaks and barring. It has yellow irides, grey feet and bill, and feathered tarsi.
Distribution and habitat
The Mantanani scops owl is endemic to small islands between the Malaysian state of Sabah in northern Borneo, such as the Mantanani group after which the species gets its common name, and the Philippines island of Palawan, including Calamien, Rasa and Ursula, as well as islands in the Sulu Archipelago and the central Philippines. It is fairly common in coconut groves and other wooded habitats, such as stands of Casuarina equisetifolia, though the total range size is small and estimated to be less than 2,000 km2 (772 sq mi).
The voice has been described as a simple waa and a goose-like honk, with a descending series of short was during territorial disputes. The female's voice is lower and harsher than that of the male.
Status and conservation
The Mantanani scops owl is considered to be near threatened because it is confined to increasingly disturbed and degraded habitats within a small range. The BirdLife population estimate for the species over its entire range is 10,000 to 20,000 individuals and decreasing. Estimates for the population on Mantanani Island are for at least 100 birds.