Silvery Grebe
Podiceps occipitalis
Widespread, small pale grebe of lakes and reservoirs, often with no surrounding vegetation; nests mainly in colonies, locally by the hundreds. The southern population also occurs in coastal waters in winter. Often looks mostly white at a distance, unlike the darker White-tufted Grebe. The southern population has a silvery-blond hood (reduced in young and nonbreeding birds) and a grayish throat while the northern Andean population has a blond-streaked cap, a white throat, and looks the same year-round. Also note vocal differences between southern and northern populations.
识别特征
The silvery grebe is about 28 cm (11 in) in length. There are two different subspecies which differ in the colouring on their head and facial plumes. In the southern form, the ear plumes are yellowish and the side of the head and throat are grey. In the northern form, the ear plumes are grey and the side of the head and throat are white. Both have a crown that is black and the neck, chest and belly are white while the back is dark grey and the sides and flanks blackish. The beak and feet are black and the eye red. The northern form in particular is similar in appearance to the rare and highly localized Junin grebe (Podiceps taczanowskii), and their ranges overlap.
分类信息
- 学名
- Podiceps occipitalis
- 命名信息
- Garnot, 1826
- 目
- Podicipediformes
- 科
- Podicipedidae
- 属
- Podiceps
分布与栖息地
The silvery grebe nests in Argentina, the Falkland Islands, Chile, and the western parts of Bolivia, Peru, Ecuador and Colombia. The southern silvery grebe is migratory, in winter ranging north to Paraguay, southern Bolivia and southern Brazil and possibly also in Uruguay. Its habitat is freshwater lakes, lagoons, reservoirs and ponds. In the Andes it tends to have a preference for weakly alkaline lakes and is sometimes found foraging on hypersaline lakes. In Patagonia, it sometimes inhabits saline lakes where it can be found in the company of flamingoes.
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类

Reunion Bulbul
Hypsipetes borbonicus
A medium-sized dark gray bird with a white eye, a black cap, and a carrot-colored bill. Endemic to the island of Reunion. Found in humid forest as well as secondary forest and forest dominated by exotic trees; now mostly confined to middle and high elevations. Often in small, noisy groups. Somewhat similar to male Reunion Cuckooshrike, but easily separated by the orange bill and pale eye. The song is an unmusical but varied series of rattling, metallic, and scraping notes, often given from a high perch. The calls include a “chek” note and a long mew.

Oriental Magpie-Robin
Copsychus saularis
A medium-sized robin with a broad white wingbar running from the shoulder to the tip of the wing. Note white outertail feathers, particularly when in flight. Males sport black-and-white plumage while the females are grayish brown and white. Juveniles resemble females, but have a scaly head and upperparts. They have a good repertoire of melodious calls and are known to imitate other bird calls. The most commonly heard call is a whistle given at dawn. Most often seen singing from a high exposed perch. These birds are often seen in cultivated areas, open woodlands, and gardens.

California Thrasher
Toxostoma redivivum
Long-tailed with long, slender bill that is sharply downcurved. Drab grayish-brown without any markings. Paler on throat; warmer orangey color on belly. Often hard to see when lurking in dense shrubs. Sings from prominent perches. Song is seemingly endless and complex. Forages primarily on the ground. Range restricted to dense brush and woodland in California and Baja California.
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