Southern white-faced owl | |
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Near Chobe River, Botswana | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Strigiformes |
Family: | Strigidae |
Genus: | Ptilopsis |
Species: | P. granti |
Binomial name | |
Ptilopsis granti (Kollibay, 1910) | |
Synonyms | |
Ptilopsis erlangeri |
The southern white-faced owl (Ptilopsis granti) is a fairly small owl in the family Strigidae. It is native to the southern half of Africa. It was formerly regarded as a subspecies of the northern white-faced owl (P. leucopsis) but the two are now commonly treated as separate species.
It is 22–28 cm (8.7–11.0 in) long and weighs 185–220 g (6.5–7.8 oz). The upperparts are grey with dark streaks and there are white spots on the scapular feathers. The underparts are whitish with dark streaks. The face is white with a black border and black around the large orange eyes. The head has two short ear-tufts with black tips. Juvenile birds have a greyish face. The northern white-faced owl is usually paler and browner with reduced streaking below.
Their call is a series of fast, bubbling hoots, uttered at night and frequently repeated. These fast, staccato notes followed by a longer and higher-pitched ‘hoot’ are extensively used during breeding season and pairs of owls often sing together. [3] The northern white-faced owl has a very different two-note call.
Its range extends from Gabon eastwards to southern Kenya and southwards to Namibia and northern South Africa. It inhabits savanna and dry woodland. It is usually seen alone or in pairs. It mainly hunts large insects, as well as occasional small mammals, birds and reptiles.
The eggs are usually laid in the old nest of another bird. The clutch contains two or three eggs which are incubated for about 30 days. The young birds leave the nest about a month after hatching.
During the winter, southern white-faced owls increase their resting metabolic rate by approximately 45% to adjust to the climate changes. Furthermore, the owls do this to increase cold temperature tolerance which is unusual for these creatures. Not only that, but the BMR (Basal Metabolic Rate) of the owl is lower than what is expected of other birds of a similar size to help them when there is a lack of food. This is unusual considering the lack of food and other survival resources during the winter. [4]
The fieldfare is a member of the thrush family Turdidae. It breeds in woodland and scrub in northern Europe and across the Palearctic. It is strongly migratory, with many northern birds moving south during the winter. It is a very rare breeder in Great Britain and Ireland, but winters in large numbers in the United Kingdom, Southern Europe, North Africa and the Middle East. It is omnivorous, eating a wide range of molluscs, insects and earthworms in the summer, and berries, grain and seeds in the winter.
The barn owl is the most widely distributed species of owl in the world and one of the most widespread of all species of birds, being found almost everywhere except for the polar and desert regions, Asia north of the Himalayas, most of Indonesia, and some Pacific Islands. It is also known as the common barn owl, to distinguish it from the other species in its family, Tytonidae, which forms one of the two main lineages of living owls, the other being the typical owls (Strigidae).
The Eurasian pygmy owl is the smallest owl in Europe. It is a dark reddish to greyish-brown, with spotted sides and half of a white ring around the back of the neck. This species is found in the boreal forests of Northern and Central Europe to Siberia.
The pearl-spotted owlet is a small bird of prey found in sub-Saharan Africa. They belong to the Strigidae family, otherwise known as the typical owls or the true owls, which contains most species of owl. As part of the genus Glaucidium, or pygmy owls, they are commonly referred to as 'owlets' due to their diminutive size. Pearl-spotted owlets are brownish and heavily spotted white, with two distinct black false 'eyes' at the back of their head. They are often confused with an African barred owlet.
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Levaillant's cuckoo is a cuckoo which is a resident breeding species in Africa south of the Sahara. It is found in bushy habitats. It is a brood parasite, using the nests of bulbuls and babblers. It was named in honour of the French explorer, collector and ornithologist, François Le Vaillant.
Verreaux's eagle-owl, also commonly known as the milky eagle owl or giant eagle owl, is a member of the family Strigidae. This species is widespread in sub-Saharan Africa. A member of the genus Ketupa, it is the largest African owl, measuring up to 66 cm (26 in) in total length. This eagle-owl is a resident primarily of dry, wooded savanna. Verreaux's eagle-owl is mainly grey in color and is distinguishable from other large owls by its bright pink eyelids, a feature shared with no other owl species in the world.
The mottled wood owl is a species of large owl found in India. They are found in gardens and thin deciduous forests adjacent to dry thorn forests or farmland. They are easily detected by their distinctive tremulous, eerie calls at dawn and dusk. The characteristic call is a duet of the male and female, while other notes include a low hoot and a screech. Their large size, lack of "ear" tufts and the concentric barring on the face make them easy to identify.
The African wood owl or Woodford's owl, is a typical owl from the genus Strix in the family Strigidae which is widespread in sub-Saharan Africa.
The black sparrowhawk, sometimes known as the black goshawk or great sparrowhawk, is the largest African member of the genus Accipiter. It occurs mainly in forest and non-desert areas south of the Sahara, particularly where there are large trees suitable for nesting; favored habitat includes suburban and human-altered landscapes. It preys predominantly on birds of moderate size, such as pigeons and doves, in suburban areas.
The Cape eagle-owl is a species of owl in the family Strigidae. It is one of several large species of the eagle-owl genus Bubo.
The barred eagle-owl, also called the Malay eagle-owl, is a species of eagle owl in the family Strigidae. It is a member of the large genus Ketupa which is distributed on most of the world's continents. This relatively little-known species is found from the southern Malay Peninsula down a string of several of the larger southeast Asian islands to as far as Borneo. It forms a superspecies with the physically similar but larger spot-bellied eagle-owl, although the two species appear to be allopatric in distribution.
The black-and-white owl is a species of owl in the family Strigidae.
The northern white-faced owl is a species of owl in the family Strigidae. The southern white-faced owl was formerly included in this species and the two were known as the white-faced scops-owl.
Pel's fishing owl is a large species of owl in the family Strigidae, found in Africa. It lives near rivers and lakes, and feeds nocturnally on fish and frogs snatched from the surface of lakes and rivers. The species prefers slow-moving rivers with large, overhanging trees to roost in and forage from. It nests in hollows and the forks of large trees. Though as many as two eggs are laid, often only one chick is raised.
The striped kingfisher is a species of bird in the tree kingfisher subfamily. It was first described by Edward, Lord Stanley, in Salt's Voyage to Abyssinia in 1814 as "Chelicut kingfisher" Alaudo Chelicuti.
The cuckoo-finch, also known as the parasitic weaver or cuckoo weaver, is a small passerine bird now placed in the family Viduidae with the indigobirds and whydahs. It occurs in grassland in Africa south of the Sahara. The male is mainly yellow and green while the female is buff with dark streaks. The eggs are laid in the nests of other birds.
The golden-tailed woodpecker is a species of bird in the family Picidae. Its specific name commemorates the 5th Earl of Abingdon. It belongs to a species complex that includes the Knysna woodpecker to the south of its range, and the mostly allopatric Mombasa woodpecker to the northeast, with which it perhaps hybridizes.
The double-banded courser, also known as the two-banded courser, is a species of bird in the family Glareolidae.
The mountain pygmy owl is a small species of owl from the family Strigidae. They reside throughout southern Arizona, New Mexico and Mexico.