Verreaux's Batis
Batis minima
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 differ: male’s chest band is broad and black, while female’s is gray. Juvenile has a rusty-tinged breast. Pairs are rare and localized residents in secondary forest, forest edge, and plantations. Calls include a series of 5–20 thin short high-pitched “seeet” notes on the same pitch, faster and more monotonous than similar sounds of other batises. Verreaux’s Batis is smaller and has a cleaner, thinner song than West African Batis. Female Verreaux’s also has a gray rather than chestnut breast band.
识别特征
The adult male has a velvety black head with a white loral spot and narrow supercilium, the head colour fades to blackish-grey on the hindcrown and is separated from the back by a white collar. The mantle and back are velvety-black with a mottled rump which has long, fluffy feathers. The wings are very black with a contrasting white wingstripe. The tail is black with white outer tail feathers. The underparts are white except for a glossy black breast band. The bill and legs are black and the eyes are golden yellow. The females is similar to the male but has a smaller loral spot and supercilium and has a narrower dark grey breast band. They are small birds measuring 9–10 cm (3.5–3.9 in) in length and weighing 8–12 g (0.28–0.42 oz).<p>The song is a series of high, evenly pitched thin short notes "pee-pee-pee-pee" which resembles a squeaky bicycle pump.
分类信息
- 学名
- Batis minima
- 命名信息
- (Verreaux, J & Verreaux, É, 1855)
- 目
- Passeriformes
- 科
- Platysteiridae
- 属
- Batis
分布与栖息地
This species is very similar to the West African batis Batis occulta and this somewhat masks its true distribution but the Gabon batis has been found in Gabon, the Monte Alen National Park in Equatorial Guinea, the lowland Dja area in southern Cameroon and it has recently been discovered in the Dzanga-Ndoki National Park in the extreme south of the Central African Republic.<p>The Gabon batis is found in lowland forest, normally lower than 800 m (2,600 ft). It avoids primary rainforest, other than at the forest edge, and prefers secondary forest with a dense but broken canopy and thick, low undergrowth, as well as overgrown cacao and coffee plantations. It avoids cultivated land and the vicinity of villages and other man-made habitats.
- 迁徙
- Resident species
保护状况
The Gabon batis is suspected to be experiencing a reduction in range and population as a result of forest clearance and degradation, however the rate of the suspected decline has not been estimated.
- 种群趋势
- declining
照片
分布
其他鸟类
Gray Gull
Leucophaeus modestus
Distinctive and often noisy and conspicuous. The only dark gull in its range in the Humboldt Current. Common over inshore waters and along the coast on sandy beaches, at river mouths, and on adjacent rocky coasts, but breeds inland in remote areas of the Atacama Desert. Breeding adult has a white head while immatures are brown overall; all ages have slender black bill and dark legs. Immatures look like adults in 3 years.
Bassian Thrush
Zoothera lunulata
Large thrush, greenish brown with black scallop marks above, pale with black scaly marks below. Smaller Russet-tailed Thrush has larger-appearing bill, is less strongly marked above. Bassian lacks white in tail corners, usually visible in flying or preening Russet-tailed. The smaller wingbar has less prominent pale tips in adult Bassian. Introduced Song Thrush has spots rather than scaly marks below. Inhabits wet forests, where it forages in leaf litter. Song recalls that of Common Blackbird, very different from Russet-tailed song.
Rusty-bellied Shortwing
Brachypteryx hyperythra
A very small, dark bird of dark undergrowth in evergreen forests. The male has gray-blue upperparts, bright orange underparts, and a short white eyebrow. The female is grayish-brown above, with duller orangish underparts. Very shy and inconspicuous. The jingling song consists of high-pitched, bell-like, tinkling notes that accelerate rapidly towards the end.
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