Aldabra Drongo
Dicrurus aldabranus
Bold, black fork-tailed bird with a red eye. There is sometimes but not always a tuft of long feathers above the bill. Juveniles have an unusual pale-gray plumage, but still show the forked tail. Found in all habitats with bushes and trees on the remote Seychelles island of Aldabra, including forest, mangroves, and thick scrub. Perches prominently in the open, swooping out to catch insects on the wing. Often follows Madagascar Coucals and Aldabra Giant Tortoises, feeding on insects that they disturb. Song is a repeated sequence of whistles, creaks, and rasps.
分类信息
The Aldabra drongo was first described by Robert Ridgway in 1893. The closest relative to the Adabra drongo is the crested drongo.
- 学名
- Dicrurus aldabranus
- 命名信息
- (Ridgway, 1893)
- 目
- Passeriformes
- 科
- Dicruridae
- 属
- Dicrurus
分布与栖息地
The Aldabra drongo is endemic to the Aldabra atoll in the southwest Seychelles. On these islands, it is found in wooded areas of dense scrub. It can also be found in coastal casuarina forest and mangroves, where it typically builds it's nests.
- 迁徙
- Resident species
行为
The Aldabra drongo feeds primarily on insects and small geckos and lizards. When hunting insects, it will perch on a branch and catch the insects in mid-air. It may feed on the ground, however this behaviour is usually seen by juveniles who are unskilled in mid-air hunting.<p>It is known for being a highly vocal bird, with a wide variety of calls. These calls appear to server a variety of communication needs, including a musical duet sung between male and female during mating, and an alarm call described as "ti-ti-you caw caw".
保护状况
- 种群趋势
- stable
照片
分布
其他鸟类
Gray Falcon
Falco hypoleucos
Seldom-seen pale gray falcon of inland Australia found in arid grassland and woodland habitats, where it sometimes perches high on communication towers. Pale gray upperparts and white underparts, with faint dark streaks below. Legs fully feathered (unlike the long, bare legs of Brown Falcon). In flight, outer upperwing (“hand”) is noticeably darker than the inner wing and back. Wings not as pointed as hobby or Peregrine Falcon. Pale inland Brown Falcons are often misidentified as this species: note that Gray Falcon is unlikely to be seen perched in low bushes or feeding from the ground.
Pale-footed Swallow
Orochelidon flavipes
Uncommon swallow in montane forest in the Andes from Venezuela to Bolivia. Similar to the more common Blue-and-white Swallow, but look for the buffy throat and browner flanks on Pale-footed Swallow. Found in flocks, usually not far from forest. Not frequently found around human settlements unlike Blue-and-white Swallow. Occurs from around 2,400–3,200 m.
Collared Crescentchest
Melanopareia torquata
Shy and attractive species with a long tail, which can be held cocked. Mostly olive-brown with a rusty nape, a black mask, and a white eyebrow. Note the black collar with a thin white line above that contrasts with its buff face and underparts. Found in grasslands with scattered bushes. The song is a series of far-carrying “chip” notes, repeated continually.
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