Andaman Drongo
Dicrurus andamanensis
A medium-sized, dark drongo with a strong bill and a deeply-forked tail with tips curling outwards. Inhabits forests and forest edges, where it hawks for insects under the canopy. Often found in small groups and will flock with other species as well. Calls include tinkling sounds, metallic whistles, and a variety of short harsh notes.
识别特征
The Andaman drongo is 28-29 cm long, although the larger dicruriformis subspecies is 35 cm in length. These birds possess 2-centimeter-long hairy filaments and feathers on each side of the neck. In terms of coloration, the males have black plumage, with the exception of brownish primaries and a black abdomen, flanks, and undertail-coverts. Their entire plumage has green sheen, and their wing-linings have a silvery brown hue with white-tipped axillaries and underwing-coverts.<p>The females have a less pronounced forked tail and are smaller in size compared to the males. Juveniles, in their early stages, display a more square-ended tail, a browner and less glossy appearance than the adults, and a lack of the distinctive frontal filaments. Additionally, they exhibit more prominent white tips on their axillaries and underwing coverts.
分类信息
- 学名
- Dicrurus andamanensis
- 命名信息
- Beavan, 1867
- 目
- Passeriformes
- 科
- Dicruridae
- 属
- Dicrurus
分布与栖息地
The Andaman drongo species found exclusively in the lush tropical forests of the Andaman Islands in the Bay of Bengal. The primary habitat of the Andaman drongo consists of evergreen and semi-evergreen forests that are characterized by canopy trees, a diverse understory, lianas and epiphytic plants. Within these forest habitats, the Andaman drongo primarily occupies the mid to upper canopy levels, where it is known for its acrobatic aerial foraging.
- 迁徙
- Resident species
保护状况
According to the 2020 report from the Andaman Forest Department, only 10% of the original forest cover remains, emphasizing the urgent need for habitat preservation. Invasive species, particularly the common myna (Acridotheres tristis), have further threatened the Andaman drongo's breeding success, outcompeting them for nesting sites and food resources. They are now classified as a near threatened species. Organizations such as the Andaman Avian Society have partnered with the Andaman Forest Department to establish protected areas and corridors for the species.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gray-browed Wren
Pheugopedius schulenbergi
Bamboo-loving wren found locally on the eastern slope of the Andes in northern Peru. Brown and gray overall with black and white face and mustache stripes. Gray underparts are unspotted; crown brown with black edges. Pairs or small groups skulk in dense bamboo, where they are most often found by their remarkable voice, a truly operatic performance of low-pitched hooting whistles given by two or three birds at once.
Dwarf Cassowary
Casuarius bennetti
A huge flightless bird of hill and montane forest; occasionally in lowland rainforest, especially where other cassowary species are absent. The smallest member of the family. Plumage loose and black in adults, brown in juveniles. Adults have a bright blue neck with a red patch on the lower nape. Also note the low, rounded casque. Very secretive and seldom seen. Forages for fallen fruit on the forest floor. Similar to other cassowary species but smaller in size, with lower casque, lacking wattles and does not normally co-occur.
Tumbes Hummingbird
Thaumasius baeri
A plain hummingbird found in dry forest and scrub in southwestern Ecuador and northwestern Peru. It is dull green with light gray underparts, a white spot behind the eye, and a thick, slightly curved bill. Some birds show very faint spots on the throat. Similar to Spot-throated Hummingbird, but throat markings are much less conspicuous or entirely absent. Ranges are also different; Tumbes Hummingbird is found only on the Pacific side of the Andes and does not reach the Marañon drainage.
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。