Great Dusky Swift
Cypseloides senex
Large swift with uniform cold brown plumage with a pale face. Similar to Sooty Swift, but is larger and paler. Most often seen close to waterfalls where they roost and nest, often gathering in huge groups. Forages widely over a variety of habitats.
识别特征
The great dusky swift is the largest member of genus Cypseloides. It is 18 cm (7.1 in) long and weighs 56 to 110 g (2.0 to 3.9 oz). The sexes have the same plumage. Adults have a chocolate brown crown and throat with pale gray edges to the feathers, giving a frosted appearance to the face. Their back is a darker brown, their rump a brown intermediate between the head and back, and their tail blackish brown. Their undersides are a paler brown than the back. The upper side of the wing is mostly brown and the underside somewhat lighter. Juveniles are very similar to adults with the addition on pale fringes to the wing feathers.
分类信息
The great dusky swift is monotypic.
- 学名
- Cypseloides senex
- 命名信息
- (Temminck, 1826)
- 目
- Apodiformes
- 科
- Apodidae
- 属
- Cypseloides
分布与栖息地
The great dusky swift is found in Brazil from southern Pará and much of Mato Grosso east into Bahia and south to Rio Grande do Sul, in eastern Paraguay, and in northeastern Argentina's Misiones Province. Undocumented sight records in Bolivia lead the South American Classification Committee of the American Ornithological Society to treat it as hypothetical in that country. Its principal habitats are tropical evergreen forest, temperate forest, and second-growth scrublands. The species roosts around waterfalls and is known for flying through the Iguazu Falls on the border of Brazil and Argentina.
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类

Dartford Warbler
Curruca undata
Plumage is rather dark overall, grayish above and dull wine-red below; note narrow red eyering and fairly bright yellowish legs. No similar species in most of its range. Skulking and difficult to see well, although when singing in spring may perch atop a bush, the long tail often held slightly cocked. Song is composed of short whistles and harsher rattles; calls are dry and scolding. Breeds in dense scrubby habitats, especially heathland with gorse. Winters in similar habitats, albeit averaging more open and occasionally grassy.

Muisca Antpitta
Grallaria rufula
Plump bird with long legs and a short tail that ranges in the eastern Andes of Colombia, barely reaching over the border into Venezuela. Plumage is chestnut brown with an orange tinge to the breast and slightly paler belly; sometimes shows a faint mustache streak. Skulks in the understory of high elevation elfin forest and usually stays on the ground, but sometimes comes up to a low perch to sing. Common vocalization is a sweet, rising whistle followed by a lower pitched gargle, and also gives a series of flat whistles. It used to be called Rufous Antpitta.

Burmese Yuhina
Yuhina humilis
Relatively nondescript brown yuhina without any significant patches of warm coloration. Note broken white eyering, silvery nape, and black moustache. Distinguished from Moustached Yuhina by a fairly uniform crest, lightly streaked throat throat, gray flanks, and brown ear coverts. Forages in pairs and small flocks in foothill and montane forests. Gives “chuck” and chip calls when moving in flocks.
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