Olivaceous Siskin
Spinus olivaceus
Small, yellow finch found in cloud forest along the east slope of the Andes. Note yellow patches in wings and tail. Male has a black hood. Difficult to separate from Hooded Siskin except by range and habitat. Olivaceous Siskin is generally found at lower elevations and prefers taller, more humid forest. Male may appear slightly more golden than male Hooded Siskin, but this is hard to judge. Female is always yellow below, whereas most (but not all) female Hooded Siskins in the area of overlap are grayish below. Not all birds can be safely identified.
识别特征
The adult male olivaceous siskin has a black face, head, nape, throat and upper breast. It has a narrow collar of yellow and the rest of the upper parts, apart from the yellow rump, are olive green streaked with black. The greater wing coverts have a yellow edge, and this, with the yellow bases to the flight feathers, form a yellow panel when the bird is in flight. Underparts are yellowish-green with a dull yellow lower breast and belly. The tail is brownish-black, with the bases of the outer feathers yellow. The head of the adult female lacks the black of the male, and it and the upper parts are mainly yellowish-olive. The yellow rump, wings and tail are similar to those of the male. Beaks in both sexes are grey and legs are pinkish-brown or brown. Juvenile coloration is similar to the female's but is generally more brownish with the yellow parts being duller, buff or streaked with brown.
分类信息
- 学名
- Spinus olivaceus
- 命名信息
- Berlepsch & Stolzmann, 1894
- 目
- Passeriformes
- 科
- Fringillidae
- 属
- Spinus
分布与栖息地
This is a bird of the eastern side of the tropical high Andes. It ranges from northern Peru to La Paz and Cochabamba in Bolivia and to southeastern Ecuador, and has also been observed east of the Andes near Santa Cruz de la Sierra in Bolivia. Typically it is found between 1,200 and 3,000 metres (3,900 and 9,800 ft) above sea level, in forest clearings and forest verges.
- 迁徙
- Resident species
行为
The olivaceous siskin is an active, social species, usually seen in pairs or small groups, but sometimes forms larger flocks, especially in winter. It feeds on seeds, mainly on the ground and in low shrubs, but sometimes higher in trees. Its behaviour and appearance is generally similar to that of the hooded siskin but they differ in range and habitat choice.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Guadalcanal Crow
Corvus woodfordi
A medium-sized crow with a rather short tail and a massive pale dark-tipped bill. Found in lowland and montane rainforest up to 1250 meters of elevation. Voice typically consists of staccato cawing and rasping.
Dusky Woodswallow
Artamus cyanopterus
Chunky bird with broad, triangular wings and short, decurved bill. Dark brownish-gray plumage overall, with white outer primaries distinctive in flight and at rest. Tail black with white tip broken by black at the center. Pale underwings contrast strongly with dark belly in flight. Usually in small flocks, in open woodland areas.
Japanese Night Heron
Gorsachius goisagi
A small brown heron with awkward-looking, hunched appearance. Occurs in dense, damp lowland and foothill forests next to bodies of water, where it hunts prey in dense cover. Paler crown and weaker crest than similar Malayan Night-Heron and lacks the white wingtips of that species. Shy and difficult to see; most readily observed during migration, when it sometimes visits more open habitats. Gives hooting calls at regular intervals, especially in early evening.
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