African scops owl
| African scops owl | |
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| Species: | O. senegalensis
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| Otus senegalensis (Swainson, 1837)
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The African scops owl (Otus senegalensis) is a small owl which is widespread in sub-Saharan Africa.
Taxonomy
When he first described the African scops owl in 1837, from a specimen collected in Senegal, William John Swainson assigned it to the now defunct genus Scops, giving it the scientific name Scops senegalensis.[2]
There are three subspecies currently recognised:[3]
- Otus senegalensis senegalensis: Widespread in sub-Saharan Africa
- Otus senegalensis nivosus: south eastern Kenya from the lower Tana River to the Lali Hills
- Otus senegalensis feae: Annobon island in the Gulf of Guinea (regarded by Birdlife International as a separate species the Annobon scops owl.[4]
The African scops owl was originally regarded as the African subspecies of the scops owl Otus scops then as Otus senegalensis which included the Oriental scops owl Otus sunia and the Nicobar scops owl Otus alius before it too was divided up, the latest revision sees the Socotra scops owl Otis socotrana, the Annobon scops owl and the Arabian scops owl Otus pamelae given species status.[1]
Description
The African scops owl is a small owl, measuring 17 cm (6.7 in) in length. It is typically greyish-brown, though sometimes pale rufous or warmer brown, and is cryptically marked with streaks and mottling. Its grey facial disk has a narrow black edge, and its eyes are yellow. It has ear tufts, which are generally kept lowered unless the bird is disturbed.[5] The African scops owl is around 15–17 cm (5.9–6.7 in) in length with a wingspan of 45 cm (18 in).[6]
Voice
The African scops owl gives a monotonous quivering distinctive "prrrp" at five second intervals.[6]
Similar species
The migrant Eurasian scops owl is very similar to the African scops owl; though it averages slightly larger, it may not be distinguishable in the field.[5]
Range and habitat
The African scops owl is endemic to sub-Saharan Africa.[2] It ranges from sea level to 2,000 m (6,600 ft) in elevation, and is found in wooded habitats and forest edge,[5] including in gardens and mangroves.[7]
Behaviour
The African scops owl is strictly nocturnal. During the day, it perches close to the trunk of a tree.[7] When roosting in daylight, this species closes its eyes and extends its ear tufts to give the impression of a tree branch, making it easily overlooked. Pairs sometimes roost together.[8] The African scops owl is not as territorial as the Eurasian scops owl and will nest in loose aggregations with the nest sites quite close to each other.[8]
The male and female may duet, calling all night both before and after leaving the roost site. The African scops owl lays four to six eggs directly onto the floor of a tree hollow, laying occurs throughout April and June and incubation lasts about 27 days during which the female incubates the eggs and is fed by the male, once the eggs hatch the young are fed by the female with food brought by the male.[8] The young fledge in 30 days.[2]
The prey of the African scops owl is mainly insects such as grasshoppers, beetles, crickets, moths etc. but also spiders, scorpions and small vertebrates. Normally hunts by scanning or listening from a perch and swooping down to capture prey on the ground, but will hawk for flying insects.[8]
References
- ^ a b "Otus senegalensis". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources. Retrieved 30 October 2016.
- ^ a b c König, Claus; Weick, Friedhelm (2008). Owls of the World. London, UK: Christopher Helm. p. 256. ISBN 978-0-7136-6548-2.
- ^ "African Scops Owl Otus senegalensis (Swainson, 1837)". Avibase. denis Lepage. Retrieved 30 October 2016.
- ^ "Annobon Scops-owl Otus feae". Birdlife International. Retrieved 30 October 2016.
- ^ a b c Stevenson, Terry; Fanshawe, John (2002). Birds of East Africa: Kenya, Tanzania, Uganda, Rwanda, Burundi. London, UK: TD & A Poyser. p. 200. ISBN 0-85661-079-8.
- ^ a b Kemp, Alan; Kemp, Meg (1998). SASOL Birds of Prey of Africa and its Islands. New Holland. pp. 288–289. ISBN 1 85974 100 2.
- ^ a b Barlow, Clive; Wacher, Tim (1997). A Field Guide to Birds of The Gambia and Senegal. New Haven, CT, US: Yale University Press. p. 236. ISBN 0-300-11574-1.
- ^ a b c d König, Claus; Weick, Friedhelm; Becking, Jan-Hendrick (1999). Owls A Guide to the Owls of the World. Pica Press. pp. 231–232. ISBN 1-873403-74-7.
External links
- African Scops Owl - Species text in The Atlas of Southern African Birds.
- African Scops-Owl (Otus senegalensis) videos and photos at Internet Bird Collection