Yellow-throated Antwren
Myrmotherula ambigua
Tiny antwren, heavily streaked with black and white above, solid yellow below. Females have a tawny-colored head. Note the two white wingbars. Inhabits the canopy and subcanopy of humid forest, including white sand forest; almost always associated with mixed-species flocks. The song is a monotonous repetition of “pew-pew” notes. The similar male of Pygmy Antwren has a white throat, while females are inseparable.
识别特征
The yellow-throated antwren is 8 to 8.5 cm (3.1 to 3.3 in) long and weighs 7 to 8 g (0.25 to 0.28 oz). It is a smallish bird with a short tail. Adult males have a black and white streaked face and neck with whitish cheeks. Their crown and back are black with white streaks; their rump is grayish. They have a light yellow patch between the shoulders. Their tail is black with white edges and tips to the feathers. Their wings are black with wide white edges on the coverts and narrower white edges on the flight feathers. Their underparts are light yellow with some black streaks on the side. Adult females have tawny-buff to buff streaks (not white) on the face, head, and upperparts. They do not have the male's patch between the shoulders. Their underparts tend to tawny-buff to buff.
分类信息
The yellow-throated antwren is monotypic. It and Sclater's antwren (M. sclateri]] form a superspecies. The species' original author considered them likely to be conspecific but that treatment has not gained acceptance.
- 学名
- Myrmotherula ambigua
- 命名信息
- Zimmer, JT, 1932
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Myrmotherula
分布与栖息地
The yellow-throated antwren is found in southwestern Venezuela's Amazonas state, in extreme eastern Colombia's Guainía and Vaupés departments, and in Brazil in the upper basin of the Rio Negro. It inhabits the subcanopy and canopy of lowland evergreen forests of several types, typically those on white sand soil to mixed soils. In elevation it mostly occurs below 350 m (1,100 ft), though only to 200 m (700 ft) in Colombia and occasionally as high as about 1,100 m (3,600 ft) on tepuis.
- 迁徙
- Resident species
行为
The yellow-throated antwren is believed to be a year-round resident throughout its range.<p>The yellow-throated antwren's diet has not been detailed but is known to include insects and probably spiders and other arthropods. It typically forages in pairs and almost always as part of a mixed-species feeding flock. It mostly feeds in dense foliage in or just below the forest canopy, even in stunted forest where the canopy is only about 15 m (50 ft) high. It actively seeks prey mostly by gleaning leaves, and also takes prey from vine tangles and along branches by gleaning, reaching, lunging, and hovering.<p>Nothing is known about the yellow-throated antwren's breeding biology.<p>The yellow-throated antwren's song is a "monotone, slow, very high 'pew-pew--' ".
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Purple Sandpiper
Calidris maritima
Plump, rock-loving shorebird with slightly droopy bill. Most often seen in nonbreeding plumage, which is fairly dark gray with spotted underparts. Namesake purple sheen (mostly on back, scapulars, and tertials) only visible at close distance in good light. Legs and base of bill usually bright orange. Messy-looking breeding plumage is darker and more heavily marked, with limited rusty tones on upperparts. Largely inaccessible breeding range on high Arctic tundra; most often seen in northern Europe, Spitsbergen, and Iceland. Winters at slightly lower latitudes, regularly south to the mid-Atlantic region in North America and the Iberian Peninsula in Europe; found in flocks on rocky coastlines and jetties pounded by heavy surf.
Bornean Spiderhunter
Arachnothera everetti
Medium-sized spiderhunter with an olive back and streaked gray underparts. Inhabits lowland and submontane forests and forest edges, where it feeds primarily on nectar in the understory; favors blossoms of banana and ginger. Very similar in appearance to Gray-breasted Spiderhunter; range overlap is poorly understood but appears to be minimal. Look for Bornean’s more intensely streaked underparts and slightly larger size. Long-billed Spiderhunter can show some streaking on the breast but is much larger and longer-billed, with yellowish underparts. Sometimes noisy, giving loud raspy nasal calls.
Whiskered Yuhina
Yuhina flavicollis
Distinguished-looking small songbird with a brown mohawk of a crest. Brown above and white below with an orange nape and a small black mustache stripe. Slender white eye crescents give it a “spectacled” appearance on top of a whiskered one. Like other yuhinas, a very social bird, often seen foraging in the lower and middle levels of hilly broadleaf forests, sometimes with other species. Calls are usually an explosive pair or triad of notes that can be likened to “pee-bee!” or “pee-ah-bee!”
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