Bluish-gray Saltator
Saltator coerulescens
Fairly common, but often retiring, in tropical lowlands of both drier and more humid areas. Occurs across much of South America, from Colombia to Argentina. Can be found from sea level to around 1,500 m elevation. Favors forest edge, second growth thickets, hedges, and tangles, especially with morning glory flowers, which it munches quietly. Note plain bluish-gray coloration with warm tawny vent and short white eyebrow. Immature looks slightly different, with a yellowish wash to the face and upperparts. Listen for sweet song with slurred whistles.
识别特征
On average, the bluish-grey saltator is 20 cm long and weighs 52 g. The plumage depends on age and subspecies, but in general this bird has grey or greyish-olive upperparts, a white stripe over the eye, a narrow white throat, a grey breast and a buff or cinnamon belly.<p>The common call is a long-drawn upward slur, ch'wheeet or ch'kweeee, sometimes with a more elaborate beginning, as hi'whee chu weeeeh. The song is a warble, usually fairly short, varying from nasal to mellow.
分类信息
The bluish-grey saltator was formally described in 1817 by the French ornithologist Louis Pierre Vieillot under the binomial name Saltator coerulescens. Vieillot based his description on the "Habia de la Ceja Blanca" that Félix de Azara had described in 1802 in his book on birds in Paraguay and the Río de la Plata. The specific epithet coerulescens is derived from Latin and means "bluish".<p>Saltator coerulescens was formerly known as the greyish saltator and included two subspecies groups: grandis (including brevicaudus, hesperis, plumbiceps, vigorsii and yucatanensis) and olivascens (including brewsteri and plumbeus). In 2021, they were recognized as separate species, the cinnamon-bellied saltator (S. grandis) and olive-grey (or Caribbean grey) saltator (S. olivascens). With these as separate species, S. coerulescens includes the subspecies azarae, mutus and superciliaris.
- 学名
- Saltator coerulescens
- 命名信息
- Vieillot, 1817
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Saltator
分布与栖息地
This species occurs in a wide range of semi-open habitats, such as woodlands, scrub and edges of forest (it avoids the interior of dense forests) in tropical and subtropical South America, including northern Argentina, western Uruguay, Paraguay, widely in Brazil (being replaced by the olive-grey saltator in the extreme north near the borders with the Guianas and Venezuela), Bolivia, eastern Peru, eastern Ecuador, and southeastern Colombia (being replaced by the olive-grey saltator in central and northern parts of the country).
- 迁徙
- Resident species
行为
The bluish-grey saltator feeds on fruits, buds and slow-moving arthropods. It forages at low and middle levels, sometimes in pairs or small groups and sometimes with mixed-species flocks that may include other saltators.<p>The two pale blue subelliptic eggs per clutch measure some 23–31.5 mm long by about 17–22 mm wide and weigh about 5 grams each. They look unusual for this genus as they have a circle of blackish-brown hairstreaks and dots around the blunt end. They are laid in a bulky cup nest 2–4 m high in a tree.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Gran Canaria Blue Chaffinch
Fringilla polatzeki
Endemic to the island of Gran Canaria in the Canary Islands. Medium-sized finch with a strong and heavy bill, broken white eyering, and bold white wing-bars. Male is a striking dark blue-gray while female is brown-gray. Largely restricted to montane pine forests. Song is a repetitive, accelerating series; call is a quiet, rising “weep.”
Uniform Treehunter
Thripadectes ignobilis
Medium-sized brownish bird of the lower subtropical zone in the western Andes of Colombia and Ecuador. Plain dark brown with much less streaking than other treehunters; only shows a slightly paler eyebrow and some streaking on the throat. Typically found at lower elevations than other treehunters in range, but some overlap. Western Woodhaunter is found at similar elevations but has a longer, narrower bill and a paler buffy throat. Singles or pairs follow mixed-species flocks through the understory, where they can be skulky and difficult to see. Listen for the song: a slow series of 5-10 squeaky notes.
Green Pheasant
Phasianus versicolor
Endemic to Japan and the national bird. The male is striking with bottle-green underparts, purplish-blue neck and head with red facial skin. Upperparts are intricately patterned brown and powder-gray with a long, pointed tail. Females are entirely brown with spotted and scalloped pattern. Inhabits fields, hedgerows, and brushy areas. Female could be confused with female copper pheasant although that species is more tied to forest. Male gives a far-carrying “ko-kyok!” followed by a noisy wing flutter. Flushes loudly with an explosion of wings and hoarse calls.
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