Yellow-throated Warbler
Setophaga dominica
A slender, long-billed warbler with distinctive pattern. Look for yellow throat, black mask, and black streaks on sides. All plumages are very similar; females and immatures often show a light buffy wash on the sides. Forages like a nuthatch, often creeping along branches and hanging upside-down. Fairly common breeder in mature forests with large sycamores or pines. Winters from the southeastern U.S. to Central America and the Caribbean, often in palm trees. Listen for sweet descending song with sharper notes at the end.
识别特征
In summer, male yellow-throated warblers display grey upperparts and wings, with double white wing bars. Their throats are yellow, and the remainder of their underparts are white, and are streaked with black on the flanks. Their heads are strongly patterned in black and white, with a long supercilium; the different subspecies may display yellow and white superciliums. Remiges and rectrices are black. They measure 14 cm (5.5 in) long.<p>Other plumages of these birds – females immatures and non-breeding males – resemble washed-out versions of the summer males; in particular they have a less crisply defined strong head pattern. They also have less bright yellows, and dark grey feathers instead of black ones in the body plumage. Compared to many other New World warblers, sexual dimorphism is slight.<p>The males' songs are clear, descending whistles. The calls are high sees or sharp chips.<p>Measurements:
分类信息
Yellow-throated warblers will occasionally hybridize with northern parulas (Setophaga americana), resulting in a hybrid species known as Sutton's warblers. Sutton's warblers lack the black streaks bordering the breast indicative of yellow-throated warblers, and have a suffused greenish-yellow wash on their back, which is also not indicative of yellow-throated warblers. The Sutton's warbler was first discovered in 1940 in West Virginia.
- 学名
- Setophaga dominica
- 命名信息
- (Linnaeus, 1766)
- 目
- Passeriformes
- 科
- Parulidae
- 属
- Setophaga
分布与栖息地
These birds breed in southeastern North America, and their breeding ranges extend from southern Pennsylvania and northern Missouri, to the Gulf of Mexico. One subspecies, from northwest Florida, is resident all year round. The other populations of this species are migratory, wintering at the Gulf Coast, eastern Central America, and the Caribbean. Vagrant wintering birds are sometimes seen in northernmost South America. <p>In the United States, the yellow-throated warbler's range differs from typical Setophaga warblers because they have a more expansive resident population in the South than other Setophaga warblers. Moreover, their breeding range is more southerly, and their wintering range more is northerly, than the other warblers in the genus. According to McKay et al., "[t]he near absence of the species from the lower Piedmont of the Carolinas and Georgia ... presents a puzzle."<p>The yellow-throated warbler is a woodland species with a preference for coniferous or swamp tree species, in which it preferably nests.
- 繁殖区
- NA : e, se USA
- 非繁殖区
- MA, Greater Antilles
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Southern Hyliota
Hyliota australis
Mid-sized, generic-looking warbler-like bird. Males have a matte black back, a white wing patch, and very pale yellowish underparts. Females are similar, but browner on the back. Found mainly in broadleaf savanna, and locally in humid forest. Usually in pairs or small groups, which will join mixed-species feeding flocks. The quiet vocalizations include chatty calls and trills. Very similar to Yellow-bellied Hyliota. In most of the range, Southern males distinguished by the smaller white patch on the wing, and females by their browner upperparts. In Uganda and Kenya, males are extremely similar, but Southern can still be recognized by its non-glossy black back.
Pennant-winged Nightjar
Caprimulgus vexillarius
Breeding males have extraordinary “pennants” growing out of their wings. Non-breeding males are still distinctive due to the huge white patches on the wings. Females are very drab, and lack white in the wing or tail, unlike most nightjars. This is a migratory species that is found in many different habitats on migration and during the non-breeding season. Breeds in moist savanna and broadleaved woodland, especially miombo. Song is a slow, squeaky trill. Female is similar to Standard-winged Nightjar, but is larger and has more barring in the wings.
Black Baza
Aviceda leuphotes
A highly distinctive medium-sized raptor. Black overall with a thick white breast band and rusty-edged white stripes on the belly. Slender crest may be held vertically or at an angle when the bird is perched, but tends to be hidden during flight. If seen flying from above, note the “checkerboard” patterning on upperwings. Favors foothill and lowland forests when breeding, but can be found in more open habitats on passage and in wintering grounds. Quite social outside of the breeding season, often soaring in large flocks and roosting communally. Gives a squeaky, echoing whistle, often while in flight.
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