Eastern Long-tailed Hornbill
Horizocerus cassini
A small-bodied hornbill with an extremely long tail, a dark bill, and a puffy white crest. Usually found in thick rainforest, where it can be difficult to view. At times, these birds will follow troops of monkeys to eat animals they scare out of the foliage. Vocalizations are unique among African hornbills, including crowlike caws and long mournful wails. Calls can be similar to those of Congo Serpent-Eagle, but Eastern Long-tailed Hornbill often gives more of a wail with a somewhat raspy quality.
分类信息
The eastern long-tailed hornbill was formally described in 1903 by the German naturalist Otto Finsch based on a specimen from Gabon in West Africa. He coined the binomial name Ortholophus cassini. The specific epithet was chosen to honour the American ornithologist John Cassin. The species is now placed in the genus Horizocerus that was introduced in 1899 by the American ornithologist Harry C. Oberholser. The eastern long-tailed hornbill was formerly considered to be conspecific with the western long-tailed hornbill (Horizocerus albocristatus) with the English name "white-crested hornbill".
- 学名
- Horizocerus cassini
- 命名信息
- (Finsch, 1903)
- 目
- Bucerotiformes
- 科
- Bucerotidae
- 属
- Horizocerus
分布与栖息地
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
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Large and relatively colorful cisticola with a rufous cap and back of the neck, and a black-streaked back. Found in lush grassland habitat. The song consists of chirping introductory notes followed by a long buzz. As with other cisticolas, habitat and vocalizations are important to identification. Very similar to Aberdare Cisticola, but lacks streaking on the back of the neck. Fairly similar to Croaking Cisticola, but has rufous on the head.
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