Yellow-bellied Siskin
Spinus xanthogastrus
Small boldly patterned finch. Male has black hood, yellow belly, and yellow wing patch. Female much drabber, overall dull yellowish-green but still shows yellow wing patch. Most often seen in pairs, often perched in the canopy but sometimes lower. Usually close to forest, but hangs around clearings and edges.
识别特征
The yellow-bellied siskin is a small bird, 10.5 cm in length and weighing 12 g. The male is entirely black except for a bright yellow belly, tail sides and wing patches. The female is dark olive green above and has pale yellow underparts which become brighter on the belly. She has a blackish tail and wings and also has bright yellow primary wing patches and tail sides. Young birds resemble the female, but have dusky fringes to the upperpart feathers and smaller yellow wing and tail patches. The song of this bird is a pleasant chattering twitter, and the call is a sharp pyee.<p>The subspecies S. x. stejnegeri, which occurs from extreme southeastern Peru to central Bolivia, is larger and longer-billed than the nominate subspecies S. x. xanthogastrus. Males have larger yellow wing patches and more extensive black on the flanks. Females of this subspecies are darker olive above than the northern birds.<p>The yellow-bellied siskin is more of a woodland bird than the superficially similar lesser goldfinch (Spinus psaltria) and the latter species is paler and has a white wing patch and a more musical song.
分类信息
- 学名
- Spinus xanthogastrus
- 命名信息
- (Du Bus de Gisignies, 1855)
- 目
- Passeriformes
- 科
- Fringillidae
- 属
- Spinus
分布与栖息地
- 迁徙
- Resident species
行为
The yellow-bellied siskin breeds in mountain oak forests at altitudes between 800–3,000 m. The nest is a shallow cup of rootlets, bark and lichens 2.4–3.7 m high in the dense foliage of a small tree in a clearing. The two or three green-tinged white eggs are laid in April or May and incubated by the female. Although not migratory, this species wanders within its range when not breeding.<p>The yellow-bellied siskin has been relentlessly persecuted for the cage-bird trade in some areas, such as central Costa Rica. Where it remains common, in remote or protected areas, flocks of up to 30 birds forage in the canopy for small insects and oak flowers, or descend to clearings for seeds. The males may sing socially.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Red-crowned Malimbe
Malimbus coronatus
Adult female is an all glossy black forest weaver; adult male is similar but with a red oval patch on the crown that is not always easily seen. Juvenile is matte black with a chestnut crown. Scarce and patchily distributed, preferring the canopy of tall primary and secondary lowland and swamp forest. Often found in pairs. Vocalizations include a complex medley of weaver-like chittering “che-chur-chet” and electrical buzzing “dzrrrrrrr” and high-pitched downslurred “teooot-teoot” notes. Female cannot be safely separated from Black-throated Malimbe unless male is present.
Spectacled Tetraka
Xanthomixis zosterops
Medium-sized, dull-olive tetraka, with a pale “spectacle” around the eye. Madagascar endemic that is found in the understory of rainforest. Often joins mixed flocks with tetrakas and other birds. Call is a series of silvery, sputtered “spit” notes. Separated from other tetrakas by its bold spectacles. Some birds in the northeast are dark, similar to the very rare Dusky Tetraka, but they can be separated by their brighter spectacles, paler underparts, and longer tail.
Parkinson's Petrel
Procellaria parkinsoni
A medium-sized, all-black petrel with a dark-tipped yellowish bill. Breeds only on Great Barrier and Little Barrier Islands in New Zealand. Seen around Hauraki Gulf and pelagic waters near shelf break edges and seamounts around northern New Zealand. Migrates to coastal South America during nonbreeding period. Similar to White-chinned Petrel and Westland Petrel, but is smaller, with a darker-tipped, less robust bill; lacks the small white patch under the chin; and is found in northern New Zealand waters as opposed to the Cook Strait and the South Island. Overlaps in range with Flesh-footed Shearwater, which is smaller, has pink-colored legs, and shows a pinkish bill with a black tip.
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