Black-billed Cuckoo-Dove
Macropygia nigrirostris
A small-bodied, mostly brown dove with a long tail and a short stout black bill. Heavily barred tail and rump are diagnostic. Found from sea level to 2600 meters of elevation, usually singly or in pairs at forest edge, though groups of up to 20 can sometimes be found feeding on fruiting trees. Very similar to both Brown Cuckoo-Dove in New Guinea and MacKinlay’s Cuckoo-Dove in the Solomon Islands. Male Brown Cuckoo-Dove differs in being bigger with a grayish head and iridescent green neck patch, female has thick black under tail crescents. MacKinlay’s Cuckoo-Dove is a similar size but is a lighter tan color on the body showing contrast with the darker chestnut wings, whereas Black-billed Cuckoo-Dove is uniformly ruddy brown. It also differs from both species in its barred uppertail and rump. Commonly vocal and most often heard giving a rapid series of around twelve “woi” notes.
识别特征
The bar-tailed cuckoo-dove measures 29 centimetres (11 in) in length. It has a short, completely black bill. The six central tail feathers are black barred. The central breast feathers are not bifurcated. The male is ruddy-brown, with no clear distinction between the underparts and the upperparts. The female, however, has black barred upperparts. The juvenile is similar to the female, but its tail is barred irregularly.<p>It is differentiated from other sympatric (other species existing in the same geographic area and thus frequently encountering with it) pigeons other than cuckoo-doves, by its chestnut brown plumage and slender, long tail.
分类信息
- 学名
- Macropygia nigrirostris
- 命名信息
- Salvadori, 1876
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Macropygia
分布与栖息地
It is native to Papua New Guinea and Indonesia. It inhabits old-growth forests, forest peripheries, and second-growth forests. It also occurs commonly on submontane forests on altitudes of up to 2,600 metres (8,500 ft) from sea levels, and occasionally at sea levels on hills adjacent to coasts.
- 迁徙
- Resident species
保护状况
Since 1988, the bar-tailed cuckoo-dove has been rated as a species of least concern on the IUCN Red List of Endangered Species. This is because it has a very large range—more than 20,000 km2 (7,700 mi2)—and because it has a stable population trend. Also, although its population numbers has not been determined, it is commonly found throughout most of its distribution, it is thought to be above 10,000 which is above the criterion to warrant it a vulnerable rating. There are no substantial threats thought to be to this species.
- 种群趋势
- stable
照片
分布
其他鸟类
Masked Crimson Tanager
Ramphocelus nigrogularis
Small, attractive tanager; bright crimson and black with a black mask and silver bill. Most commonly found in vegetation around oxbow lakes, also sometimes found in nearby forests and along rivers. Sexes similar though females are slightly duller than males. Extensive crimson and black mask easily distinguish this species from other tanagers within its range.
Yellow-olive Flatbill
Tolmomyias sulphurescens
Rather uneventful-looking flycatcher of tropical lowlands, in both humid and drier situations. Favors forest and woodland edges, and in semiopen areas with taller trees. Perches mainly at mid-levels, when often holds its tail slightly cocked. In Mexico and Central America, can be identified by its pale eyes accentuated by whitish spectacles, a rather broad bill that is pale below, and thin, pale pinkish legs; also note the yellowish edgings to the wing feathers, not forming distinct wingbars. High, lisping call easily passed off as an insect or a begging baby bird. Several similar species occur in South America, best identified by voice.
Blue-vented Hummingbird
Saucerottia hoffmanni
Fairly small dark hummingbird, green overall with dark blue tail. Straight, medium-length bill. Copper rump and absence of rufous wing flash help distinguish from other similar species. Sexes similar. Usually seen feeding singly in flowers along forest edge, shrubby second growth, and gardens.
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