Ituri Batis
Batis ituriensis
A very small and striking gray, white, and black flycatcher-like bird with a very dark crown, a yellow eye, white wingbars, and a white spot above the bill base. Sexes similar. Juvenile has neck and wing washed buffy. Pairs are rare and localized residents in the middle levels and the canopy of secondary and primary lowland forest, below 1300 meters of elevation. The larger Rwenzori Batis has a broader breast band than Ituri Batis and tends to occur in montane forest above 1400 meters.
识别特征
The Ituri batis is a very small black and white bird, like a small shrike or old world flycatcher which is white below with a broad black breast band, a black head with a conspicuous white loral spot in front of a bright yellow eye. Black on the back and wings with a white strip on the wings and white outer tail feathers on an otherwise black tail. The female is similar to the male but has a thin white supercilium. Young birds are buffer above and greyer below. The Ituri batis has a body length of 9.5–10 cm (3.7–3.9 in).
分类信息
Genus: Batis; Family: Platysteiridae; Order: Passeriformes.
- 学名
- Batis ituriensis
- 命名信息
- Chapin, 1921
- 目
- Passeriformes
- 科
- Platysteiridae
- 属
- Batis
分布与栖息地
The Ituri batis occurs in the eastern Congo Basin in Ituri and Itombwe in the north eastern Democratic Republic of Congo where it is uncommon and in the Budongo Forest in western Uganda where it is common.<p>The Ituri batis is found in lowland forest, between 900 and 1,300 m (3,000 and 4,300 ft). It prefers degraded forest such as secondary forest, and cultivated areas with scattered tall trees, such as plantations, and avoiding primary rainforest.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
其他鸟类
Northern Rough-winged Swallow
Stelgidopteryx serripennis
Plainest swallow in North America. Plain brown above with indistinct brown wash across throat and breast. Wings are relatively broad; tail is short and square (or slightly notched). Juveniles have rusty wingbars. “Ridgway’s” subspecies, mainly found on the Yucatan peninsula, is larger and lankier, almost recalling a martin. Look for the deeper notch in the tail and dark-tipped undertail coverts. Often seen near water, sometimes in mixed flocks with other swallows. Breeds in holes and crevices, often along riverbanks or under a bridge. Not a colonial nester like Bank Swallow. Call is a low, grating buzz that rises slightly in pitch. Compare with Bank Swallow, which has a contrasting dark chest band. Also very similar to Southern Rough-winged Swallow, which overlaps in Central America. Southern Rough-winged has a brighter tawny throat and paler rump.
Purplish-backed Jay
Cyanocorax beecheii
Handsome, rather large jay. Common in tropical forest and woodland of northwest Mexico where it is endemic. Usually in small groups, which can be noisy and conspicuous or very quiet and easily overlooked. Deep purplish-blue back, wings, and tail do not contrast strongly with black head and body (can look blackish overall at a distance). Note piercing pale eyes and bright yellow legs and feet. Like other related jays, immature has yellow bill and dull eyes. Compare with San Blas Jay (both occur around town of San Blas, Nayarit, where, ironically, Purplish-backed is generally the only species found in town).
Eastern Olivaceous Warbler
Iduna pallida
Small, pallid olive-gray warbler. Very similar to other Iduna and Acrocephalus species. Note its long and slender bill and faint pale wing panel (most prominent when plumage is fresh, sometimes not noticeable). Pumps its long tail continuously as it flits around in bushes and trees after small insects, a behavior which separates it from very similar Acrocephalus warblers. Found in open woodlands, riparian forest, as well as dry and semi-arid zones; strong connection with Tamarix bushes. Call is a dry and harsh “chack.” Song is a repeating scratchy sequence.
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