Akun Eagle-Owl
Ketupa leucosticta
A small insectivorous eagle-owl that sallies to catch flying insects from mid-canopy perches near openings in lowland forest. Has a distinctive pale belly with large dark spots, a brownish-gray face and back, yellow eyes, and a banded tail. Vocalizations include soft grunts, a short ascending or descending whistled “woooh,” and short trilled calls. Vocalizations can resemble those of other eagle-owls within its range, but Akun Eagle-Owl’s distinctive pale belly and large, obvious spotting on a mostly white chest are unique.
识别特征
The akun eagle-owl is one of the smaller eagle-owls, it has predominantly hark to reddish-brown head and upperparts, with pale, dusky brown bars on the wings and back, and white markings around the shoulders. There are two large "ear" tufts on the head which are dark brown with white spots, while the eyes are pale yellow. The upper breast is light reddish-brown and marked with dark bars, while the lower breast, belly and vent are white, with reddish-brown vermiculations and large blackish spots. Juveniles have a whitish head and body, with reddish-brown barring and brown wings and tail. The usual call is a low, accelerating, clucking rattle and when alarmed it produces an unusual quacking sound.
分类信息
The akun eagle-owl was formally described in 1855 by the German ornithologist Gustav Hartlaub from a specimen collected in Ghana. Hartlaub placed the owl in the genus Bubo and coined the binomial name Buco leucostictus. The specific epithet leucostictus is from Ancient Greek leukostiktos which means "white-speckled". The akun eagle-owl is now placed in the genus Ketupa that was introduced in 1831 by the French naturalist René Lesson. The species is monotypic: no subspecies are recognised. The common English name, akun, is from the local name for the owl in southwest Camaroon. The local name "Akuñ" was recorded by the collector George Latimer Bates near Grand Batanga and published in 1904 by the English ornithologist Richard Bowdler Sharpe.
- 学名
- Ketupa leucosticta
- 命名信息
- (Hartlaub, 1855)
- 目
- Strigiformes
- 科
- Strigidae
- 属
- Ketupa
分布与栖息地
The akun eagle-owl has a patchy range that extends through a number of the west African countries which have coastlines on the Gulf of Guinea, from Guinea east to Cameroon and south to Angola, extending inland into the southern Central African Republic, Congo and northern parts of the Democratic Republic of Congo.<p>The Akun eagle-owl is found mainly in lowland primary and secondary rainforest, particularly around forest edges and clearings, and also along the edges of rivers and on forested river islands.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Malawi Batis
Batis dimorpha
A cute, dumpy, colorful flycatcher-like bird that flits around in the mid-canopy and understory of forest, forest edge, plantations, and gardens. Males have a broad black chest band, yellow-orange eye, white stripe through the top of the wing, and white throat. Females have an orange eye, buff-and-white stripe through the top of the wing, and rufous chin patch. The song is a series of 8-9 plaintive steady piping “peooop” notes, and calls include buzzing grating “ddrz-drrzt-drrr, ddt-ddzt-drzt-drr”. Female Dark Batis is distinguished by its darker (rich rufous rather than white and buff) wing stripe. Male Dark Batis is very similar, but has a slightly longer tail and broader black breast stripe. Also similar to Chinspot Batis, but has darker orange color to the eyes, and female Malawi Batis shows paler rufous on the throat and buff tinges to the wing stripe.
Raso Skylark
Alauda razae
Found only on Raso Island of the Cape Verdes. Overall grayish-brown and moderately streaked including the breast. Note the large and heavy bill. Sometimes erects small crest. Belongs to the same genus as Eurasian Skylark, but is smaller with shorter wings and tail than Eurasian Skylark. Found along dry riverbeds on flat plains. Song is similar to that of Crested Lark. Call a short rattle, "Chureep."
White-edged Oriole
Icterus graceannae
Bright orange-and-black bird found in dry forest in western Ecuador and northwestern Peru. The only other oriole in its range is Yellow-tailed Oriole; White-edged lacks yellow on the underside of the tail, has more extensive white in the wing, and is usually (but not always) a deeper orange color. Juveniles are duller and less orange. Forages conspicuously in the trees, and even visits feeders in some areas.
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