Black-and-yellow Tanager
Chrysothlypis chrysomelas
Small warblerlike tanager with striking color pattern: male brilliant golden-yellow with black back, wings, and tail. Female much duller and more olive-green with dirty whitish belly. Note bill shape: relatively long, slender, and pointed. A canopy bird, pairs or small groups are most often seen following mixed flocks in forests and edges.
识别特征
The adult black-and-yellow tanager is about 12 centimetres (4.7 in) long and weighs 12.5 grams (0.44 oz). The adult male has a bright yellow head, rump and underparts, and a black back, wings and tail. The wing linings are white. The male of C. c. ocularis differs in having a black spot on the lores. The female has olive upperparts and yellow underparts, but in Costa Rica and extreme western Panama (the sometimes recognized C. c. titanota) the throat and lower belly is whitish. She could be mistaken for a warbler or a female yellow-backed tanager. Immatures resemble the adult female.<p>The black-and-yellow tanager's call is a scratchy single or repeated tsew, higher and faster than that of the silver-throated tanager.
分类信息
Most authorities recognize two subspecies: The nominate in Costa Rica and western Panama and C. c. ocularis in eastern Panama, but some recognize the population in Costa Rican and extreme western Panama as a third subspecies, C. c. titanota (then limiting the nominate to the remaining part of western Panama). Some taxonomic lists modified the original name based on gender and use the specific name of chrysomelaena and this emendation is not considered correct.
- 学名
- Chrysothlypis chrysomelas
- 命名信息
- (Sclater, PL & Salvin, 1869)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Chrysothlypis
分布与栖息地
In Panama it has been recorded as far east as the border-region with Colombia. In Costa Rica, the black-and-yellow tanager is found in the foothills and slopes on the Caribbean side of the central mountain ranges, typically from 600 to 1,200 metres (2,000 to 3,900 ft) altitude, and occasionally down to 400 metres (1,300 ft). In Panama, it is found on both the Caribbean and Pacific slope from 450 to 1,200 metres (1,480 to 3,940 ft). The preferred habitat is the canopy of wet forest and tall second growth, but it will feed lower at woodland edges and clearing. A family of black-and-yellow tanagers was reported in 2010 in Colombia's Chocó department, near the Panamanian border.
- 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
Sao Tome Green-Pigeon
Treron sanctithomae
Chunky, medium-sized pigeon that has a green back and gray underparts. Also note the purple shoulders and the whitish bill with a red base. Flight is fast and direct. Sometimes alone, though more often in small groups. The species clambers around clumsily like a parrot but can remain well hidden. Found in the canopy of rainforest, secondary forest, and plantations. Most common at middle elevations. Voice is a quiet but maniacal combination of sputters, whistles, and cackles. Easily identified, as it is the only green pigeon on the island of Sao Tome.
Striolated Tit-Spinetail
Leptasthenura striolata
Distinctive, diminutive species with a very long spiky tail and a heavily streaked body. Note the rusty crown and narrow white eyebrow. Occurs at forest edges, in Araucaria forest, and in tall second growth, where it forages acrobatically by gleaning. Often accompanies mixed-species flocks.
Nuthatch-Vanga
Hypositta corallirostris
Small blue vanga that acts like a creeper or small woodpecker, feeding by climbing up tree trunks. Male is all blue, while female is greenish-blue on the back; both have a coral-colored bill. Madagascar endemic that is found in eastern rainforest at low and middle elevations. Usually in pairs, which are typically part of mixed flocks of other bird species. Most common call is a high, accelerating, slurred trill. Size, color, and tree-creeping habits make it distinctive.
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