Grassland Yellow-Finch
Sicalis luteola
Small yellowish bird, very local in tropical savannas and open grassland with scattered bushes and palmetto shrubs. Usually in groups, sometimes in fairly big flocks. Feeds mainly in grasses, eating seeds, and comes to drink at small pools; often perches on roadside fences. Note the rather stubby gray bill, yellow face and underparts, and streaked back. There are no especially similar species in Mexico and Central America, but several in South America.
识别特征
The grassland yellow finch (Sicalis luteola) is a small passerine bird. Despite its name, it is not a finch, but is a seedeater. These were formerly united with the buntings and American sparrows in the Emberizidae, but are now known to be tanagers. It is a resident in tropical South America, from Colombia south and east to the Guianas and central Ecuador, Peru and Brazil. Birds which breed further south in Argentina and Uruguay migrate to Bolivia and southern Brazil, (the cerrado etc.), in the austral winter. There are also isolated populations in Central America and Mexico. It was discovered on Trinidad in 2004, presumably having colonised from nearby Venezuela. Also known from Barbados, certainly since 1960 if not earlier. The grassland yellow finch, as its name implies, is found in fields and other open grassland. The female lays 3 brown-speckled pale blue-green eggs in a grassy cup nest in tall grass, and several pairs may breed close to each other in suitable areas. The grassland yellow finch is about 12 cm long and weighs 13 g. The males have bright yellow underparts and rump, and olive yellow upperparts. The crown and nape have dark streaking, and there is yellow around the eye. Females have dark-streaked pale brown upperparts and dull yellow underparts. The call is a sharp te-tsip, and the male's song, given from a perch or in a display flight, is a series of chips, buzzes and trills. Grassland yellow finches eat seeds and insects, and are usually seen in pairs or small groups.
分类信息
Genus: Sicalis; Family: Thraupidae; Order: Passeriformes.
- 学名
- Sicalis luteola
- 命名信息
- (Sparrman, 1789)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Sicalis
分布与栖息地
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: rising.
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Greater Spotted Eagle
Clanga clanga
Adults are large and quite uniform dark brown eagles with very broad wings and short tails. Single white "comma" mark at the wrist of the underwing. Similar to the Lesser Spotted Eagle, which is smaller, paler, and more contrasting. Juveniles are more boldly patterned with numerous prominent dirty white spots on the back and upper wings. More tied to forests than Lesser Spotted Eagle, but still near rivers and bogs. Frequents humanmade habitats more often in winter, such as lakes, rubbish dumps, and reservoirs.
Tamaulipas Crow
Corvus imparatus
Small glossy crow, common in northeast Mexico. Occurs in towns, villages, rubbish dumps, farmland, and semiopen areas with hedges and taller trees. Social and usually in flocks, at times of hundreds. Most likely to be confused with male Great-tailed Grackle, which has pale eyes and longer and keel-shaped tail (shed in late-summer molt). Chihuahuan Raven much larger, with much heavier bill and different voice. Calls of Tamaulipas Crow are low, froglike croaks.
Spot-bellied Bobwhite
Colinus leucopogon
Small quail of dry habitats in interior valleys and on the Pacific slope. Favors brushy fields, thorn scrub with grassy areas and open pine woods. Often seen along quiet roadsides early and late in the day. Usually in small groups, which flush explosively with a loud whirring of wings. Males in Guatemala and El Salvador have white face and throat. Males in Honduras and Nicaragua have bold whitish face stripes and dark throat. All females have buff eyebrow and throat. Frequently found by hearing its loud whistled bob-WHITE! call.
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