Chilean Swallow
Tachycineta leucopyga
Common and familiar swallow of southern South America; found widely from the coast to Andean foothills and from open forests to beaches. Often near water and regularly around towns and villages, associating readily with slightly smaller Blue-and-white Swallow. Identified easily in most of range by clean white underparts and big white rump patch; also note that the tail is less deeply forked than Blue-and-White Swallow. Juvenile is duller above and with a variable dusky breast band.
识别特征
The Chilean swallow is about 13 centimetres (5.1 in) in length and weighs 15–20 grams (0.53–0.71 oz). It is glossy blue-black above and white below with a white rump. Its wings and tail are black, with white tips on its inner secondaries and its tertials. Their underwing coverts and auxiliaries are both grey. The Chilean swallow's bill and legs are black. The sexes are alike, and the juveniles are duller and browner.<p>It is similar to the white-rumped swallow, but lacks the white forehead of that species and has bluer upperparts and grey underwing-coverts. In addition to this, the breeding ranges of the two have almost no overlap.
分类信息
The new genus Tachycineta was created for this group of swallows by German ornithologist Jean Cabanis in 1850. The current genus name Tachycineta, is from Ancient Greek takhukinetos, "moving quickly", and the specific meyeni commemorates Prussian botanist and collector Franz Meyen. Some consider the species name to be leucopyga, which is what the species name originally was. This species, along with the white-rumped swallow, T. leucorrhoa, form a superspecies. This species is monotypic.
- 学名
- Tachycineta leucopyga
- 命名信息
- (Meyen, 1834)
- 目
- Passeriformes
- 科
- Hirundinidae
- 属
- Tachycineta
分布与栖息地
This swallow is native to Argentina, Bolivia, Brazil, Chile, Falkland Islands, Paraguay, and Uruguay. It is vagrant to South Georgia and the South Sandwich Islands. This swallow can also be found in Peru, but its origin is uncertain. Its breeding range is from the Atacama Desert in Chile and most of Argentina to the southern tip of South America. It is a year-round resident to the northern part of its range, but it is known to be migratory in the southern part. It is not well known where this population winters, but it seems to winter in northern Argentina, southern Brazil, Uruguay, and possibly Bolivia.
- 迁徙
- Complete migrants
行为
This species has been seen to nest in both artificial and natural cavities, usually near water. They are usually solitary, although they will occasionally nest in loose groups if nest sites are near each other. Their nests are made from mud or dry grass and are lined with feathers.<p>This swallow is a seasonal breeder. It usually breeds from September and sometimes early October, especially near the tip of South America, to February. In Chile, it usually raises two to three broods.<p>The Chilean swallow usually has a clutch of four to six white eggs. The eggs measure 17.8 mm–21 mm × 13 mm–14.3 mm (0.70 in–0.83 in × 0.51 in–0.56 in) and weigh around 2 g (0.071 oz).<p>After the breeding season, it is found that the Chilean swallow forms flocks.<p>These birds are insectivores, usually feeding on flying insects. They usually forage alone or in small groups. When foraging, their flight paths are low and direct.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Water Pipit
Anthus spinoletta
Breeding plumage grayish above with white eyebrow; breast pale pinkish, mostly unstreaked. Nonbreeding plumage grayish brown above, whitish below with dark streaks; averages smudgier and less well-marked than American Pipit. Sides of tail clean white; compare with dingy white of Rock Pipit in areas of overlap. Song is a long series of repeated high-pitched notes; essentially a slow trill. Call a high, lisping, slightly upslurred "ssiip.” Breeds in mountains on barren, often rocky ground; winters in varied wetland habitats, from lakeshores to salt marshes.
Inca Dove
Columbina inca
Essentially a ground dove with a long tail. Pale sandy color with scaly pattern covering entire body, unlike Common Ground Dove. Look for obvious white outer tail feathers and rufous wings in flight. Fairly common from the southwestern U.S. to far western Panama. Found in pairs or small groups in neighborhoods, parks, and scrubby desert habitats. Listen for repeated soft whistled song, sounding like “no hope.” Whirring wingbeats sound almost like a rattlesnake when it takes off.
Visayan Babbler
Sterrhoptilus nigrocapitatus
A fairly small bird of lowland and foothill forest and edge; endemic to Samar, Leyte, and Bohol, though lumped with Calabarzon Babbler under “Black-crowned Babbler” by some taxonomies. Has a gray back and cheek with fine pale streaks, dark wings and tail with white outer tail feathers, white underparts, a pale rufous throat, and a black crown. Note the slender black bill. Often joins mixed-species flocks and sometimes hangs upside down while feeding. Somewhat similar to Green-backed Whistler, especially from below, but smaller, with a pale rufous throat and a black crown. Voice includes a medium-pitched “poo piuu!” with the second note downslurred.
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