Wallacean Drongo
Dicrurus densus
A large red-eyed, glossy-black bird with a heavy bill and diagnostic tail shape. Tail is fanned at the tip and shallowly forked, the outer tail feathers often broad-tipped and slightly upturned. Juvenile has brown eyes. Singles, pairs, or groups can be found in varied habitats from sea level to foothills, including mangroves, forests, woodlands, and plantations, typically perching high. The only drongo in its range, this species can be told from crows by its red eyes and its tail shape. A noisy, vocal bird with highly varied calls, including metallic fluty notes, guttural “grrt” notes, and upslurred “weeeet” whistles.
识别特征
The Wallacean drongo or Greater Wallacean drongo (Dicrurus densus) is a species of bird in the family Dicruridae. It can be found in the countries of Indonesia and East Timor. It was formerly considered to be conspecific with the hair-crested drongo (Dicrurus hottentottus). Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical moist montane forests.
分类信息
Genus: Dicrurus; Family: Dicruridae; Order: Passeriformes.
- 学名
- Dicrurus densus
- 命名信息
- Bonaparte, 1850
- 目
- Passeriformes
- 科
- Dicruridae
- 属
- Dicrurus
分布与栖息地
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
The Wallacean drongo has a very large range and does not approach the thresholds for Vulnerable under the range size criterion. Its extent of occurrence is greater than 20,000 km2. The population trend is not known but it is not believed to be declining sufficiently rapidly, and the population size is believed to be large enough for it to not qualify as Vulnerable using the population size criterion. For these reasons the species is classified as Least Concern by the IUCN.
- 种群趋势
- unknown
照片
分布
其他鸟类
Bat-like Spinetail
Neafrapus boehmi
Extraordinary short-tailed swift with weak, fluttery, bat-like flight. Note the pale underparts and white rump patch. Seen on the wing over woodland, gallery forest, and moist savannah, especially miombo. Often in areas with baobabs, which are favored nesting sites. Usually solo or in pairs. Range does not overlap with that of the similar Sabine’s Spinetail. All other swifts have a longer tail.
Chestnut-winged Starling
Onychognathus fulgidus
The default red-winged black starling of lowland forests in its range, with a distinctive glossy black body and a noticeably long tail. Females are similar to males but have grayer, less glossy heads. Often seen in the canopy, especially in or near fruiting trees, where it sometimes forages with other starlings. Gives a mixture of grating notes and chucks along with whistled, two-parted flight calls.
Sapphire Flycatcher
Ficedula sapphira
Breeding adult male is royal blue with a white belly and orange throat and chest. Brown female is dull and potentially confusing, but note pale orange throat, rufous uppertail, and overall small stout appearance. Non-breeding and immature males are similar to females, but have blue wings and back. Breeds in moist broadleaf evergreen montane forest; descends into open forest and forest edge in the winter. Forages at middle levels, often with mixed-species flocks. Song is a brief series of high thin notes followed by a clicking rattle.
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