The Socotra scops owl (''Otus socotranus'') is a small

owl Owls are birds from the order Strigiformes (), which includes over 200 species of mostly solitary and nocturnal birds of prey typified by an upright stance, a large, broad head, binocular vision, binaural hearing, sharp talons, and feathers a ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the island of

Socotra Socotra or Soqotra (; ar, سُقُطْرَىٰ ; so, Suqadara) is an island of the Republic of Yemen in the Indian Ocean, under the ''de facto'' control of the UAE-backed Southern Transitional Council, a secessionist participant in Yemen’s ...

Yemen Yemen (; ar, ٱلْيَمَن, al-Yaman), officially the Republic of Yemen,, ) is a country in Western Asia. It is situated on the southern end of the Arabian Peninsula, and borders Saudi Arabia to the Saudi Arabia–Yemen border, north and ...

Taxonomy

The Socotra scops owl was previously lumped with the

African scops owl The African scops owl (''Otus senegalensis'') is a small owl which is widespread in sub-Saharan Africa. Taxonomy William John Swainson first described the species in 1837 from a specimen collected in Senegal, and initially assigned it to the no ...

(''Otus senegalensis''), but differences in plumage and vocalisations have led to it being split to a separate species. Recent genetic research suggests that its closest relatives are the Oriental scops owl and the Seychelles scops owl (''Otus insularis''). An interesting theory this research has led to is that the oriental scops owl is a taxon that evolved from a colonisation of the continent from island ancestors, an event which had previously been thought unlikely because island taxa were thought to be less competitive than related continental taxa.

Description

A very small scops owl which is heavily streaked and barred on its pale sandy-grey upperparts, paler underparts with darker shaft streaks and fine, dark barring. The plain facial disc has vague margins and the shoulder stripe is not as conspicuous as in other scops owls and are sandy-coloured. The ear-tufts are very small and the eyes are yellow. Its length is .

Voice

The song of the Socotra scops owl is a repeated, low-pitched series of notes which is similar to that described for the

oriental scops owl The oriental scops owl (''Otus sunia'') is a species of scops owl found in eastern and southern Asia. Description This is a small, variably plumaged, yellow-eyed owl with ear-tufts which are not always erect. It can be distinguished from the c ...

(''Otus sunia'').

Distribution and habitat

The Socotra scops owl is endemic to the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th ...

island of Socotra off the

Horn of Africa The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...

, which is within the territory of

. On Socotra it is found on over 45% of the island, most numerous in areas where there are mature palms. Its preferred habitat is rocky semi-desert with scattered trees and bushes.

Behaviour

Very little is known about the behaviour of the Socotra scops owl. It probably mainly feeds on insects and small vertebrates; the stomach contents of a single specimen contained a grasshopper, a centipede and two lizards. It has also been observed hawking for moths at dusk, in a similar fashion to a

nightjar Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. They are sometimes called goatsuckers, due to the ancient folk ta ...

. Very little is known about its breeding behaviour but a female with enlarged ovaries was caught in April. It probably uses natural cavities for nesting. Two 20-day-old young have been recorded on the nest in February, their age suggesting that the eggs were laid in early January.

References

{{Taxonbar, from=Q3377071 Otus (bird) Endemic birds of Socotra Birds described in 1899