Ring-necked Dove
Streptopelia capicola
A small, mostly gray-brown “ringneck” dove with a gentle-looking dark eye that is not obviously surrounded by bare skin. It has a pale belly and shows broad white tips and sides to the tail in flight. It is an abundant resident in most habitats and its incessant, often-repeated three-note “work HAR-der, work HAR-der” songis a common and characteristic sound of Africa. Vinaceous Dove differs from the very similar Ring-necked Dove by having a pink crown and a distinctive, quickfire four-noted song.
识别特征
Their body feathers are darkest on the upper side, where they are coloured in dull tones of grey and brown, with shades of lavender on the nape. It is paler below, where a tint of pinkish lavender is usually present. The lower belly and crissum (the undertail coverts surrounding the cloaca) is white. As with related species, they have white fringes and conspicuous white tips to the otherwise slate grey tail feathers. The tail pattern is particularly noticeable during the display flight.<p>Individual plumage variation is high, with some light and others almost sooty. Males and females look alike, although the males are slightly bigger. They measure 25–26.5 cm (9.8–10.4 in) in length and weigh 92–188 g (3.2–6.6 oz). The eyes are almost black, the bill is black and the feet are dark purple.<p>An immature is duller and lacks the semi-collar of an adult. It also has buff edges to all the upper part and wing covert feathers, while the plumage below is broadly edged greyish-white.
分类信息
Genus: Streptopelia; Family: Columbidae; Order: Columbiformes.
- 学名
- Streptopelia capicola
- 命名信息
- (Sundevall, 1857)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Streptopelia
分布与栖息地
It occupies a diverse range of habitat types, including semi-desert scrub, Boscia and Acacia savannah, a variety of woodland types, farmlands, open plantations and alien acacia thickets. Only closed forest or plantations, or the extensive waterless dune fields and gravel plains of the Namib are unsuited to their requirements. In southern Africa, they are most commonly observed in fynbos regions, miombo and mopane woodlands, besides any grassland types from moist to dry regions. Their presence in the latter areas has been facilitated by the planting of trees in groves, for instance around farm homesteads.<p>They are vulnerable at exposed waterholes or in plantations, where they are preyed on by lanner falcons and black sparrowhawks, respectively. In addition, they are preyed on by reptiles, wildcats, jackals, genets, herons, storks, eagles and barn owls. Nests are vulnerable to birds, snakes and, in Cape Town, eastern grey squirrels that were introduced.<p>Seasonal movements are most noticeable in tropical areas, while nomadic movements occur in arid environments with limited resources. They seldom occur above 2,000 metres.
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: rising.
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Rufous-breasted Leaftosser
Sclerurus scansor
Very secretive nondescript bird that moves stealthily on the ground of humid forests, digging in the leaf litter, where it is normally difficult to see. Brown overall with a long and slender bill, a rufous rump and breast, and a white throat. The rather infrequently given song is a sharp descending trill.
Green-headed Oriole
Oriolus chlorocephalus
Old World oriole with mostly yellow plumage, a dull-green hood, and a red bill. Found in forest, forest edge, lush woodland, and adjacent secondary habitats, at low and middle elevations. Song is a series of slurred, liquid whistles, and calls include a raspy, up-slurred whine. Similar to African Black-headed Oriole, but with a good view, easily separated by the green rather than black hood. Often found in the same areas as Eurasian Golden and African Golden Orioles, but distinguished by being hooded rather than yellow-headed.
Streak-throated Swallow
Petrochelidon fluvicola
A small brown-black swallow with a short tail and comparatively weak flight. The forehead, crown, and back of the neck are dull chestnut with faint dark streaks. The back is glossy deep blue with a few narrow whitish streaks; the rump is pale brown and is more prominent in flight. The wings and tail are blackish-brown, and the tail almost square-ended. Underparts are buffy white with blackish-brown streaks, especially the chin, throat, and upper breast. Juvenile is duller and browner than adult, with buff feather edges and faint streaks on underparts. Found mostly as individuals in mixed swallow flocks; different, weaker flight action is characteristic.
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