Slender-billed Finch
Xenospingus concolor
Long-tailed, often rather skulking “finch” (actually a tanager) of scrub, hedges, and riverside thickets in desert lowlands, where no very similar species are found. Adult blue-gray overall with slender, bright yellow bill, and yellow legs; tail often held cocked. Immature looks very different: streaky overall with white eyering and slender yellow bill (darker on youngest birds). Voice notably varied: chips, clucks, and chatters usually given from cover.
识别特征
The slender-billed finch (Xenospingus concolor) is a species of bird in the tanager family Thraupidae. It is the only member of the genus Xenospingus. It is restricted to southwest Peru and northern Chile, and inhabits mainly riverine vegetation along coastal valleys. It has been considered endangered due to loss of habitat. Riparian thickets that were common are under pressure from logging by farm owners. Some information has indicated that it has adapted to threats by using olive tree plantations and other artificial habitats successfully.
分类信息
The slender-billed finch was formally described in 1837 by the French naturalists Alcide d'Orbigny and Frédéric de Lafresnaye under the binomial name Sylvia concolor. They specified the type location as the city of Arica which was then in Peru and is now in northern Chile. The slender-billed finch is the only species placed in the genus Xenospingus that was introduced by the German ornithologist Jean Cabanis in 1867. The genus name combines the Ancient Greek xenos meaning 'strange' or 'different' with spingos meaning 'finch'. The specific epithet concolor is Latin for 'uniform', 'similar in colour' or 'plain'. The species is monotypic: no subspecies are recognised.<p>A molecular phylogenetic study of the tanagers published in 2014 found that the slender-billed finch was a member of the subfamily Poospizinae and was most closely related to the cinereous finch (Piezorina cinerea).
- 学名
- Xenospingus concolor
- 命名信息
- (d'Orbigny & Lafresnaye, 1837)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Xenospingus
分布与栖息地
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Short-tailed Field Tyrant
Muscigralla brevicauda
A small, oddly-shaped flycatcher that inhabits deserts and other arid habitats. It is found mainly west of the Andes, but ranges up into interior valleys in a few areas. Short tail, long legs, and stout bill give this bird a top-heavy appearance; pale wingbars and facial markings also help separate it from other drab species like Grayish Miner. Chestnut-and-buff rump is usually hidden by the wings, and yellow crown patch is almost never visible in the field. Largely terrestrial, but also regularly sits up on bushes, rocks, posts, and other exposed perches.
Red-rumped Parrot
Psephotus haematonotus
Ground feeding parrot. Male is bright green with blue head and red rump; female is quite different in being much duller-olive green and lacking red rump. Common in open habitats, particularly farmland and surrounding woodland areas in southeastern Australia.
Chestnut-flanked Sparrowhawk
Aerospiza castanilius
A tiny hawk with a dark slaty back, an owl-like facial expression, and dense red-brown and gray barring on the breast with redder flanks. These dark colors contrast with the hawk’s yellowish face and legs. Rarely encountered in thick forest, where it can sometimes be seen attending to driver ant swarms. This species closely resembles the larger Red-chested Goshawk, but note the small size and, if possible, look for the long inner claw relative to the other toes. Vocalizations undescribed.
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