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
Genus: Spinus; Family: Fringillidae; Order: Passeriformes.
- 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
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Northern Fiscal
Lanius humeralis
Long-tailed black-and-white shrike. There is a V-shaped white mark on the shoulders, a small white nick on the bottom of the wing, and white in the outer tail. Juveniles are brownish and heavily barred. Found in a wide variety of open habitats, including moist scrub and savanna, farmland, and grassland. Often solitary. Perches out conspicuously on fence poles, dead trees, and electric wires. The song is a highly variable mix of clear whistles and rougher notes. Also gives low, rough calls. Separated from similar shrikes by its black rather than gray back.
American Crow
Corvus brachyrhynchos
This is the common crow over much of the U.S. and Canada. Most easily identified by voice, a familiar “caw,” often repeated. Common in any open habitats, including fields, open woodlands, marshes, and cities, thriving around humans. Very social, usually seen in flocks, sometimes numbering in the hundreds or even thousands. Aggressive, sometimes seen chasing away hawks and owls. Separated from ravens by smaller size, smaller bill, shorter tail, and shorter, broader wings. Compare with Fish Crow, which is extremely similar in appearance, and best separated by voice. Includes the species formerly known as Northwestern Crow.
Yellow-breasted Greenfinch
Chloris spinoides
Beautiful and intricately-patterned finch. Male has yellow underparts, a black cap, and a dark patch behind the ear on a yellow face. Female is similar to the male, but paler and less contrastingly colored. Like other greenfinches, usually found in pairs to large flocks foraging in both trees and low grassy patches. Inhabits forests, edges, and grassy or brushy outskirts in montane and foothill areas. Song is a series of constant twittering interspersed by lower notes; calls include wheezy notes and high twitters.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。