African Desert Warbler
Curruca deserti
Very small Sylvia warbler of sandy desert with scattered low shrubs. Plumage is a pale warm buff-brown overall; warmer than the closely-related Asian Desert Warbler that has more prominently-patterned tertials. Note the deep rusty-colored tail, yellow eyes, and yellowish legs. Often forages on the ground, sometimes following wheatears. Song a short sequence of rattles and a flutey note. Call a low "trrrrr."
识别特征
It is a small bird, marginally the smallest in the genus, 11–12 cm long, and 7–10 g weight. The sexes are almost identical in colour, pale sandy yellow-brown above and whitish below; the bill and legs are yellowish, and the eye has a yellow iris; it differs from the Asian desert warbler in its more yellowish overall colour.
分类信息
Until recently it was considered conspecific with the Asian desert warbler (and called just "desert warbler"), but is now given specific status. The two are still each other's closest living relatives, and their relationships to other typical warblers are not clear; they may be fairly close to the common whitethroat. But it seems that all these three taxa are fairly basal members of the genus.
- 学名
- Curruca deserti
- 命名信息
- (Loche, 1858)
- 目
- Passeriformes
- 科
- Sylviidae
- 属
- Curruca
分布与栖息地
The warbler breeds in the deserts of north-western Africa south of the Atlas Mountains from southern Morocco east to western Libya and south to Mali and Niger. It winters in the same area, and does not migrate other than short distances.
- 迁徙
- Complete migrants
行为
Like its relatives, it is insectivorous, but will also take small berries; unlike most warblers, it commonly feeds on the ground. The song is a distinctive jingle often given in an advertisement flight, with clear notes (differing from Asian desert warbler in having few harsh notes). It breeds in desert and semi-desert environments, as long as some scattered bushes for nesting occur. The nest is built in low shrub, and 2–5 eggs are laid.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Biak Gerygone
Gerygone hypoxantha
A small bird of wooded habitats on Biak Island. Olive-brown back, gray head, pale yellow belly and broken white eye-ring. Forages actively in the mid-story in pairs or in mixed species flocks. Similar to the Biak race of Island Leaf-Warbler, but Biak Gerygone has black rather than orange lower bill and legs. Gives a messy, up-and-down, out-of-tune, whistled song mixed with a few scratchy notes.
McKay's Bunting
Plectrophenax hyperboreus
Rare white snowball shrouded in mystery. Nonbreeding birds have buffy fringes to head and back feathers that wear to white by spring. Breeding males almost pure white except for limited black in wings. Breeding females have dark streaking on back. Breeds almost exclusively on St. Matthew Island in the Bering Sea; winters on the coast of western Alaska. Very similar to Snow Bunting but paler, usually with white rump; intermediate birds may be hybrids.
Red Shoveler
Spatula platalea
Distinctive dabbling duck: combination of very large, slightly shovel-shaped black bill and and pale blue forewing patches (brighter on male) identify all plumages. Male has a pale gray head with pale yellow eyes and a “red” body with black spots. Female is mottled brown overall, but note white sides to pointed tail, big black bill. Fairly common in wetlands and at lakes, river mouths, and sewage lagoons. Unlike many dabbling ducks, often rather quiet.
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