White Bellbird
Procnias albus
Medium-sized bird; heard far more than seen. All-white male is unmistakable; mostly green female is best identified by chunky proportions and long, sloping head profile. Found in tall forest, principally at higher elevations; common in the tepui region. Feeds at fruiting trees but is more often seen from high vantage points or flying across gaps. Males sing from bare snags above the canopy and are often not visible from below. Song is only vaguely bell-like, amazingly loud and reverberating; younger males may give a cracked or truncated version.
识别特征
The white bellbird grows to a length of about 28 cm (11 in). The male is pure white with a black bill that has a fleshy black wattle, sparsely feathered with white feathers, dangling from its top and hanging down the side, usually the right side; the female is an overall olive colour, with olive streaks on the yellowish underparts, and resembles other bellbirds. The male is unlikely to be mistaken for anything else, but the female resembles the bearded bellbird (Procnias averano); that bird has a dusky olive crown and black streaking on the throat.<p>According to a study published in 2019, the white bellbird produces the loudest call ever recorded in a bird, reaching 125 dB(A) (at equivalent 1m distance). The record was previously held by the screaming piha, which was recorded at 116 dB.
分类信息
- 学名
- Procnias albus
- 命名信息
- (Hermann, 1783)
- 目
- Passeriformes
- 科
- Cotingidae
- 属
- Procnias
分布与栖息地
The range of the white bellbird includes parts of Brazil, French Guiana, Guyana, Suriname, Trinidad and Tobago, and Venezuela. It occurs in moist tropical or subtropical forests.
- 迁徙
- Vertical migration
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Chinese Leaf Warbler
Phylloscopus yunnanensis
Small plump leaf warbler. A “Pallas’s-type” leaf warbler: stout, with a pale rump, crown stripe, and prominent brow stripes. Olive-yellow above with a faint gray wash on the nape. Chinese is distinguished from Pallas’s by its paler, more faded-looking brow and crown stripes, less yellow suffusion all over the body, less compact appearance, and less obvious or absent upper wingbar. Extremely similar Gansu Leaf Warbler and Lemon-rumped Warbler can be difficult to separate; note Chinese’s slightly more elongated and less rounded appearance, a lack of a distinct hook under the end of the brow stripe, less contrasting and more yellowish head patterning, and paler yellowish secondaries. Forages actively, often hovering and hopping about at mid-level. Breeds in montane broadleaved deciduous or mixed forest; moves to lower elevations in winter. On average, found at lower altitudes than Lemon-rumped and Gansu. Lengthy song is unique and bizarre, with a twanging, grating quality: “btrichi-btrichi-btrichi.” Call is an explosive “wip!”, often repeated in medium-length series on the breeding grounds.
Chestnut-bellied Flowerpiercer
Diglossa gloriosissima
One of the most beautiful of all flowerpiercers, found only at high elevations near tree line in Colombia’s western Andes. Adult is black with a chestnut belly and silvery shoulder patch. Young birds are duller and browner. Also note the oddly shaped bill with a hooked tip, used to penetrate the bases of flowers to extract nectar. Inhabits scrub and stunted forest, and visits hummingbird feeders in at least one location. Song, often quite long, consists of squeaky chirps that constantly change in pitch.
Bran-colored Flycatcher
Myiophobus fasciatus
Small, mostly brown flycatcher that inhabits lightly wooded areas and forest edge. Good field marks include its streaky breast, tan wingbars, and lack of strong facial markings. Typically seen alone or in pairs, often sitting quietly on a low perch. Vocalizations include a rising trill and a clear whistle. Note that birds found west of the Andes from southern Colombia to northern Chile are now considered to be different species.
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