Great Swallow-tailed Swift
Panyptila sanctihieronymi
Large, spectacular swift, seen singly or in small groups (up to 10 birds). Favors drier mountain and foothill areas, often near cliffs, but ranges widely. Rarely associates directly with other swifts. Flight is fast and graceful with long sweeping glides and deep wingbeats. Long, forked, swallow tail is usually held closed in a point. Note the size, shape, and contrasting white throat set off by a black body and cap.
识别特征
The great swallow-tailed swift is 18 to 20.5 cm (7.1 to 8.1 in) long and weighs about 48 g (1.7 oz). It has long narrow wings and a long deeply forked tail. The sexes are alike. Adults have a black crown and upper face with two white spots on the forehead. Most of their body is bluish black. Their lower face, throat, collar, upper chest, and flanks are white. Their flight feathers have grayish ends and white tips.
分类信息
The great swallow-tailed swift shares genus Panyptila with the lesser swallow-tailed swift (P. cayennensis). It is monotypic.
- 学名
- Panyptila sanctihieronymi
- 命名信息
- Salvin, 1863
- 目
- Apodiformes
- 科
- Apodidae
- 属
- Panyptila
分布与栖息地
The great swallow-tailed swift is found from Nayarit in western Mexico south through Guatemala and Honduras into northern Nicaragua. There are also a few records in Costa Rica. It generally inhabits arid to semi-arid highland landscapes characterized by canyons and large cliffs. In elevation it typically ranges between 1,000 and 2,000 m (3,300 and 6,600 ft) but sometimes wanders to humid areas as low as 600 m (2,000 ft).
- 迁徙
- Resident species
行为
The great swallow-tailed swift is generally a year-round resident throughout its range but some wander to Costa Rica outside the breeding season.<p>Like all swifts, the great swallow-tailed swift is an aerial insectivore. It usually forages alone or in small flocks of its species. Details of its diet are lacking.<p>The great swallow-tailed swift builds a tubular nest about 40 to 60 cm (16 to 24 in) long from seed fluff and feathers felted with saliva. It has an entrance near the bottom and the eggs are held on shelf towards the top. It is suspended from the underside of an overhanging rock. The clutch size us unknown but is suspected to be the same two or three eggs as that of the lesser swallow-tailed swift. Nothing else is known about its breeding biology.<p>Two vocalizations of the great swallow-tailed swift are "a plaintive, subtly bisyllabic teeuw, teeuw" and "a reedy chatter kri-kri-kri-kri-kreeuw-kreee".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Sooty Babbler
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Small dark babbler with a ring of pale exposed skin around the eye. Contrastingly pale bill stands out in the gloom of the undergrowth. Found in limestone forests, often near cliffs, gullies, and ravines. Climbs on vegetation and limestone karst in search of prey, often in both single-species and mixed-species flocks. Calls softly when foraging, but fairly quiet compared to other babblers.
Sumatran Shortwing
Brachypteryx saturata
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