Gray Vireo
Vireo vicinior
One of North America's most nondescript birds: pale gray above, lighter whitish below, with a hint of pale spectacles and wingbars. Long-tailed for a vireo, but with a typically thick bill. Occurs on dry rocky slopes with patches of dense brush and trees, especially oaks and junipers. Usually seen singly or in pairs, often detected by voice. Most similar to drab Bell's Vireo but note habitat and size differences. Also compare with Plumbeous Vireo, which is shorter-tailed and more boldly marked.
识别特征
The gray vireo is .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}14 cm (5+1⁄2 in) in length, gray above, and dull white below, with a single faint wing bar and an eye-ring. It has a short, thick bill. Sexes are similar. The sideways twitching of its tail is unique among vireos and is reminiscent of that of gnatcatchers. The song is hu-wee, chu-wee, che-weet, chee, ch-churr-weet, churr, schray.
分类信息
- 学名
- Vireo vicinior
- 命名信息
- Coues, 1866
- 目
- Passeriformes
- 科
- Vireonidae
- 属
- Vireo
分布与栖息地
- 迁徙
- Complete migrants
行为
The gray vireo has skulking habits and is difficult to observe in the dense vegetation it inhabits which is mostly pinyon-juniper woodland or scrub oak woodland. It feeds mainly on insects, and birds that overwinter in Mexico additionally consume fruit. Nests are built within 2 metres (6 ft 7 in) of the ground, often in a thorny tree and consist of dry grasses, plant remains, shreds of bark and spider's web, lined with grasses and fine fibres. A clutch of three or four white eggs is laid and incubated by both parents for about thirteen days. The young leave the nest a fortnight later. Attempted parasitism by the brown-headed cowbird (Molothrus ater) often causes the nest to be abandoned.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Lincoln's Sparrow
Melospiza lincolnii
A medium-sized sparrow with crisp patterning. Slightly smaller than Song Sparrow, with finer streaking on breast (like a pen-and-ink drawing vs. an oil painting). Also note thin pale eyering, bright buffy breast that contrasts with white throat and belly, and often peaked crown. Breeds in thickets and shrubby clearings, usually within mixed or coniferous forests. Can be found in any brushy or weedy habitat in migration and winter. Beware of juvenile Song Sparrows in late summer, which can look buffy and show finer streaks than adults. Infrequently visits feeders.
Sundaic Island-Thrush
Turdus javanicus
Large thrush endemic to the montane forests of Sumatra, Borneo, and Java (generally above 2000 meters). Appearance varies across its range; birds in northern Sumatra and parts of western and central Java are dull brown overall, whereas birds elsewhere in range have orange bellies. Always note bright orange bill, eyering, legs, and feet. Forages at all levels of forest, especially on the ground. Calls include low cups and loud, explosive chattering series.
Three-toed Jacamar
Jacamaralcyon tridactyla
Its small head, very long, straight bill, and long tail give it a distinctive silhouette. Mostly dark brown above with a streaky crown and whitish belly. Usually perches upright on prominent perches in the top of trees at the forest edge or in riparian forests where they sally out to catch insects.
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