Dusky-green Oropendola
Psarocolius atrovirens
Medium-sized oropendola of montane forests. Evenly olive-green, with a dark eye and pale bill. Smaller than the similar Russet-backed Oropendola, with a darker olive head. Weaves hanging nests in small colonies, and is found most frequently around forest edges and flying above the canopy. Song is a variable jumble of liquid whistles and pops; listen also for its loud “chak” call notes.
识别特征
The male dusky-green oropendola grows to a length of about 42 cm (17 in) and the female of about 33 cm (13 in). The sexes are similar in morphology, the plumage being mainly dark brownish-green or blackish-green, with a rufous-brown rump and crissum (the undertail coverts surrounding the cloaca). The beak is greenish-white, there may be a few yellow feathers on the head, and the iris is brown or blue, the latter colour perhaps being in older birds. The russet-backed oropendola (Psarocolius angustifrons), which partly shares the same range, has more rufous upper parts, a yellow forehead and olive-green head which contrasts with its back and wings.
分类信息
- 学名
- Psarocolius atrovirens
- 命名信息
- (d'Orbigny & Lafresnaye, 1838)
- 目
- Passeriformes
- 科
- Icteridae
- 属
- Psarocolius
分布与栖息地
The dusky-green oropendola occurs on the east side of the Andes Mountains, its range extending from Huánuco Province in central Peru to Santa Cruz Department in Bolivia. It occurs in montane forests and near their edges at altitudes of between 800 and 2,600 m (2,600 and 8,500 ft) above sea level, mostly at greater elevations than the russet-backed oropendola.
- 迁徙
- Resident species
行为
The diet of this bird probably consists of insects (including moths), arthropods, small vertebrates, nectar and fruits. The breeding season is between October and December. The birds breed colonially but colony sizes are small.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Crowned Chat-Tyrant
Silvicultrix frontalis
Small flycatcher found in the Andes from northern Colombia to Bolivia. Brown above and gray below. Very obvious eyebrow is mostly white; changes to yellow in front of the eye. In eastern Andes of Colombia entire eyebrow is white. Northern populations have plain brownish wings; birds from central Peru to Bolivia, sometimes split as Kalinowski’s Chat-Tyrant, show prominent cinnamon wingbars. Singles or pairs are found in understory and mid-levels of upper subtropical and temperate forest and scrub from around 2,600 to 3,800 m, usually separate from mixed-species flocks.
Robin Accentor
Prunella rubeculoides
A distinctive and common inhabitant of high-altitude open spaces such as pastures, steppelands, and mountain valleys. Bold and confiding, often visiting villages and towns where it forages for scraps with snowfinches, mountain-finches, and other accentors. Combination of ash-gray head, orange breast, and white belly is unique amongst the birds in its region.
Rusty-belted Tapaculo
Liosceles thoracicus
Unusual long-tailed bird of rainforest understory. Gray above, white below, with a diffuse red-brown breast band and variable black barring. Walks and hops methodically on the ground or in low understory of mature rainforest. Heard more often than seen; listen for a loud, descending series of even paced toots, recalling a tinamou.
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