Ridgetop Swiftlet
Collocalia isonota
A small, common swiftlet found over a variety of habitats, even human habitation. Pale gray below with a darker throat and some dark speckling on the belly. Black above with blue gloss and a square tail that is dark under the base. Similar to Pygmy and Gray-rumped Swiftlets, but has a dark rump. Does not echolocate, so chooses well-lit nesting sites. Voice includes short, clicking flight calls.
识别特征
The ridgetop swiftlet is 9–10 cm (3.5–3.9 in) in length with a square tail. The back and upper surface of the wings are a dark dull blue with a moderate green gloss. The rump is sometimes slightly paler due to the white margins of feathers forming the uppertail coverts. The throat and upper breast are dark grey with fine white scalloping merging into larger greyish chevrons over the lower breast and flanks, becoming white over the belly. There is sometimes a tuft of small feathers on the hallux, the rear facing toe. This species lacks the white spots on the inner webs of the tail feathers that are present in some Collocalia species.
分类信息
The ridgetop swiftlet was described by the American ornithologist Harry Oberholser in 1906 as a subspecies of the cave swiftlet with the trinomial name Collocalia linchi isonota. The type locality is the province of Benguet on the island of Luzon in the Philippines. The specific epithet isonota is from the Ancient Greek isos meaning "equal" or "similar" and nōton meaning "back". The ridgetop swiftlet was formerly treated as a subspecies of the glossy swiftlet but was promoted to species status based on the results of a detailed analysis of the swiftlets in the genus Collocalia published in 2017.<p>There are two subspecies:
- 学名
- Collocalia isonota
- 命名信息
- Oberholser, 1906
- 目
- Apodiformes
- 科
- Apodidae
- 属
- Collocalia
照片
其他鸟类
Bewick's Wren
Thryomanes bewickii
Medium-sized wren, slender and long-tailed. Dark brown above and pale grayish below with a bold white eyebrow. Slender bill is slightly decurved. Superficially similar to Carolina Wren but duller grayish-brown and slightly longer-tailed. Occurs in a variety of scrubby habitats, especially thickets and hedgerows in open woodland. Also at home in gardens, residential areas, and parks. Usually skulking, but sometimes perches conspicuously when singing. Song is variable, but usually includes high-pitched buzzes and musical trills.
Cinnamon-banded Kingfisher
Todiramphus australasia
A handsome forest kingfisher with a blue-green back, rich cinnamon underparts, a broad cinnamon eyebrow and collar, a wide blackish line through the eye, and a dark cap. Juvenile duller, with a white-tipped bill, a mottled breast, and scaling on some wing feathers. Inhabits forest and forest edge in lowlands and lower hills, rarely wandering into local gardens. Distinguished from Sacred and Collared Kingfishers by its almost completely umber-colored underside and its broad brow. Its swift, descending trill, “keeeerrrrer,” is often heard, as is its harsh “krrrreee-kreeee” notes and its yapping calls.
Taiwan Rosefinch
Carpodacus formosanus
Endemic to Taiwan's mountain forests, this is the only breeding rosefinch on the island. Male deep wine-red with a frosty white brow and dark wings. Female dark brown, finely streaked below. Usually forages low in the forest, in thickets or on the ground. In parks and near villages, often perches up on railings and trail markers.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。