Boulton's Batis
Batis margaritae
A cute, dumpy flycatcher-like bird with a black chest band and white throat. Sexes differ: male has a golden eye and white wing-bar; distinctive female has a reddish-brown eye and chestnut wing bar. Pairs hunt for insects, sometimes joining flocks, in montane, riverine and dry forest, and dense thickets. Male Chinspot Batis looks almost identical to male Boulton’s, but Chinspot prefers savanna habitat and calls differently. Calls a hollow melodious “wooooe” whistle once a second, and repeated 10–20 times, as well as typical batis churring and croaking.
识别特征
Margaret's batis is a small, mainly black and white shrike-like bird with a black face mask and reddish eye, in a mainly dark grey head. They have white underparts with a broad black breast band in both sexes, with black wings which are marked in the male with a white wing stripe while the female has a rufous wing stripe. The tail is black with white outer tail feathers. Juveniles resemble the females but are duller and have brown eye. The bill and legs are black. They measure 11–12 cm (4.3–4.7 in) in length and weigh 11.5–15.5 g (0.41–0.55 oz).<p>Margaret's batis is known to make various whistles and churring calls. The territorial call is a repeated, soft, thin "hoo-hoo-hoo-hooit-hooit-hooit" which varies in length. The female and male duet with a tweeting call.
分类信息
Margaret's batis was described by the American zoologist Wolfrid Rudyerd Boulton in 1934. The binomial and common names honour the American historian and novelist Margaret Leech (1893-1974).<p>Two subspecies are recognised:
- 学名
- Batis margaritae
- 命名信息
- Boulton, 1934
- 目
- Passeriformes
- 科
- Platysteiridae
- 属
- Batis
分布与栖息地
Margaret's batis occurs mostly in forests dominated by Cryptosepalum spp but also occurs in other types of dry evergreen forest, riverine forest and secondary scrub growth. It is usually found in pairs and it is thought that its social behaviour is similar to that of other batises. It forages in trees and is not as restless as many of its congeners when foraging, often staying still for up to a minute. It joins mixed foraging flocks, often in the company of chinspot batises. In Zambia there appear to be local movements out of Cryptosepalum forest during the November to April rainy season.
- 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
鸟叫声
其他鸟类
Mottled Spinetail
Telacanthura ussheri
Medium-sized swift with erratic flight. Note the dark underparts and white rump patch, which separate it from other spinetails. Seen on the wing over moist savannah, woodland, and gallery forest. Often in areas with baobabs, which are a favored nesting site. Usually solo or in pairs. Similar in appearance to Little Swift, but Mottled Spinetail shows a pale band across the bottom of the belly, and flies more weakly, with the wings pushed forwards.
African Crake
Crecopsis egregia
Chunky, mid-sized rail. Note the black-and-brown scalloped back, gray head and chest, barred belly, reddish bill and yellowish legs. Found in mostly seasonal wetlands, such as flooded grassland. Most often seen trailing its long legs when it flushes from grass before quickly settling back down. Two common vocalizations are a series of dry “krrr” notes and a series of deeper “du-da” notes. Similar color pattern to African Rail, but African Crake has a shorter bill and a spotted back.
Half-collared Kingfisher
Alcedo semitorquata
Dark-blue kingfisher of aquatic habitats. Note the dark bill and dark blue face. Found mostly along wooded and forested streams and rivers, though also occurs in some other wetland habitats including freshwater marshes and coastal lagoons. Secretive, solitary, and generally uncommon. Call is a high-pitched “seet.” Larger than Malachite Kingfisher, with a black bill. Similar to juvenile Malachite, which has a dark bill, but Half-collared has a dark face without any orange.
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