Chestnut-bellied Seed-Finch
Sporophila angolensis
Widespread but uncommon in lowlands of South America, mainly east of the Andes. Male is mostly black with a rich chestnut belly. Female is plain warm brown. Both sexes have very large dark bill. Typically found in pairs, not in flocks like seedeaters often are, but occasionally joins a mixed flock of other "weed-eating" birds. Occurs in shrubby or grassy areas at the edge of woods.
分类信息
The chestnut-bellied seed finch was formally described by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his Systema Naturae under the binomial name Loxia angolensis. Linnaeus based his description on "The Black Gros-Beak" that had been described and illustrated in 1764 by the English naturalist George Edwards. Edwards's illustration was from a live bird belonging to the barrister Philip Carteret Webb. Edwards mistakenly believed that the bird had come from Angola. The chestnut-bellied seed finch does not occur there and the type locality is now designated as eastern Brazil.<p>The chestnut-bellied seed finch and the thick-billed seed finch were formerly considered conspecific and together had the English name "lesser seed-finch". Both species were formerly placed in the genus Oryzoborus but molecular phylogenetic studies found that Oryzoborus was embedded in Sporophila. The chestnut-bellied seed finch was therefore moved to Sporophila, a genus that had been introduced by the German ornithologist Jean Cabanis in 1844.<p>Two subspecies are recognised:
- 学名
- Sporophila angolensis
- 命名信息
- (Linnaeus, 1766)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Sporophila
分布与栖息地
- 迁徙
- Resident species
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Lesser Shrike-Tyrant
Agriornis murinus
Small (and small-billed) shrike-tyrant of open country in the southern cone, more reminiscent of a monjita than a shrike-tyrant. Note small bill, lacking terminal hook. Breeds in northern Patagonia and the southern Monte desert, as well as the Sierra de Comenchingones in central Argentina. Disperses northward and upslope into W Paraguay and SE Bolivia during the austral winter. Prefers exposed perches in low vegetation, wires, and shrubs.
Wedge-tailed Jery
Hartertula flavoviridis
Small, dark understory tetraka. Has yellowish underparts and a gray ear patch. Active bird that often pokes into clusters of dead leaves. Frequently joins flocks with tetrakas and other birds. Most common vocalization is an explosive up-and-down series of high-pitched notes. Larger, longer-tailed, and with darker underparts than other jeries. Unlike Cryptic Warbler, inhabits the understory, is much darker, and has a gray ear patch. Unlike Rand’s Warbler, has an indistinct eye-stripe and a greenish back.
Cattle Tyrant
Machetornis rixosa
Medium sized flycatcher with fairly widespread range in South America. Superficially resembles a Tropical Kingbird with olive-brown back, yellow belly, and grayish crown. However, Cattle Tyrant is unique for typically being found on or near the ground, where pairs or small flocks follow grazing animals. Found in open habitats including farmland and marshes.
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