Pemba scops owl
|Pemba scops owl|
The Pemba scops owl is a medium-sized scops-owl with short ear-tufts. There are two colour morphs, a brown morph which is mainly pale rufous-brown with light streaking on head and faint barring om paler underparts and a rufous morph which is a bright, rich rufous, that is paler on the underwing coverts. Both morphs show a pale scapular band, whitish in the brown morph and pale rufous in the rufous morph. The bill is black while cere is greenish yellow and the eyes and legs are yellow. It is 15 cm (5.9 in) tall with a 45 cm (18 in) wingspan.
The call is a single "hoo" note which is made at irregular intervals or in a rapid series of 4-6 notes given at intervals ofhalf asecond. The pair duets with the male calls being shorter, and lower in pitch.
Distribution and habitat
The Pemba scops owls endemic to Pemba, the northern island of Zanzibar, part of Tanzania, off the coast of east Africa. On Pemba this owl is found in all wooded habitats from native forest to overgrown plantations of cloves and mango. However, it is commonest in native forest.
The biology of the Pemba scops owl is little known, it is nocturnal and roosts among foliage or in dense undergrowth during the day. It starts calling soon after sunset and then hunt. The food is mainly insects which may be caught in flight, gleaned from leaves or caught on the ground after a short glide from a perch. The breeding behaviur is almost unknown, although it possibly breeds between August and October and nests in natural holes in trees.
The Pemba scops owl is listed as Vulnerable by the IUCN because it is restricted to Pemba, the population continues tio decline and there is a loss of habitat as local farmer clear plantations to make way for open agricultural fields and is now it is largely confined to the two small remaining native forests; Ngezi (14 km2 (5.4 sq mi)) and Msitu Mkuu (3 km2 (1.2 sq mi)), and the population is estimated to be between 1,500 and 4,500 breeding pairs, although it is in rapid deciline.
The Pemba scops owl was formerly regarded as a subspecies of the Madagascar scops owl Otus rutilus sensu lato due to morphological similarities but genetic research has shown that it is closer to the clade in which the African scops owl Otus senegalensis is situated.
- "Otus pembaensis". The IUCN red List of Threatened Species. International Union for Conservation of Nature and Natural Resources. Retrieved 27 October 2016.
- Kemp, Alan; Kemp, Meg (1998). Birds of Prey of Africa and its Islands. New Holland. pp. 318–319. ISBN 1 85974 100 2.
- "Pemba scops-owl (Otus pembaensis)". Wildscreen Arkive. Wildscreen. Retrieved 27 October 2016.
- "Pemba Scops Owl (Otus pembaensis)". Planet of Birds. Retrieved 27 October 2016.
- Fuchs, Jérôme; et al. (2008). "Tracing the colonization history of the Indian Ocean scops-owls (Strigiformes: Otus) with further insight into the spatio-temporal origin of the Malagasy avifauna". BMC Evolutionary Biology.