Bannerman's Turaco
Tauraco bannermani
A long-tailed, bulky greenish turaco with a yellow bill, a red crest, and gray cheeks. In flight, it explodes from the canopy, showing distinctive deep red panels in the wings. Pairs or small groups bounce agilely through montane primary and secondary evergreen forest canopies. Restricted to the Bamenda highlands of Cameroon, where it is an endangered species. Presence often revealed by its song, which lasts about 5 seconds: a whooping “hooooah” followed by 7–10 harsh croaking repeated “khaaar” notes; higher-pitched than songs of most other turacos. It is the only turaco within its range with a red crest.
识别特征
Bannerman's turaco grows to a length of 43 cm (17 in). It has a grey head, orange-red crown, crest and nape, dark green upper parts, paler green underparts and a blue tail. Red under-wing patches are visible in flight, but it is a shy bird and seldom seen. Its voice is distinctive however, being a raucous series of "kow-kow-kow" notes that can be heard a kilometre away.
分类信息
The Bannerman's turaco was first described in 1923 by the American naturalist George Latimer Bates. Genetic studies show that this species is closely related to the red-crested turaco (Tauraco erthrolophus) and white-crested turaco (Tauraco leucolophus), having diverged from them in the late Pliocene. At that time, climatic changes occurred which subsequently led to increasingly arid conditions, a decrease in forest cover and an increase in wooded savannah. The white-crested turaco maintained a widespread distribution, perhaps by adapting to new habitats, while Bannerman's turaco became restricted to montane habitats where the forest cover remained.
- 学名
- Tauraco bannermani
- 命名信息
- (Bates, GL, 1923)
- 目
- Musophagiformes
- 科
- Musophagidae
- 属
- Tauraco
分布与栖息地
Bannerman's turaco is endemic to forested mountains in Cameroon. Its main population is in the Bamenda Highlands in western Cameroon, with some birds being present in the Massif du Mbam. It has also been recorded from forested remnants in the Bamenda Highlands in the Western High Plateau. It inhabits montane forest, either primary forests or secondary forests where plenty of tall trees are allowed to remain, supplying the fruits it needs. Its altitudinal range is between 2,200 and 2,600 m (7,200 and 8,500 ft).
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Tricolored Munia
Lonchura malacca
Small, finchlike bird of weedy and grassy areas in tropical lowlands. Often in small flocks, which associate readily with seedeaters and grassquits. Adult is handsome and striking with rusty upperparts. Black head and underparts are cut by a broad white swath from flanks across the lower breast. Note stout gray bill. Juvenile notably plain, buffy brown overall with stout bluish-gray bill. Note the pointed tail, unlike seedeaters and grassquits. Native to Asia and spreading in New World as an escaped cage bird.
Fire-bellied Woodpecker
Chloropicus pyrrhogaster
A large, long-billed woodpecker with an olive back, a red rump, a bold facial pattern, and heavily marked underparts with a bright red central belly stripe. The crown and back of the head are black in the female and red in males. Forages alone or in pairs, preferring dead tree trunks where it can excavate for beetle larvae and other insects in lowland rainforest, gallery forest, and plantations. Calls include a sharp “kwip,” a series of similar notes, and a fast whinnying call. Also gives a distinctive drum that lasts about 2 seconds, beginning fast and then slowing. Similar to Bearded and Yellow-crested Woodpeckers, but there is very little overlap in range, and those species lack the red belly patch.
Rosy Starling
Pastor roseus
Adult is unique, a vision in glossy black and pale pink. Juvenile is brown with an orange bill. Breeds in colonies on steppes and winters in open and wooded habitats. Gathers in huge numbers to roost, often mixing with other species at roost sites. Flocking birds keep up a constant cacophony of dry chattering calls.
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