Thick-billed Raven
Corvus crassirostris
A huge raven with a massive, bulging bill. There is a white patch on the back of the head and another at the tip of the dark bill. Found from middle to high elevations in a variety of habitats, including grassland, woodland, moorland, rocky areas, towns, and cities. Somewhat like Fan-tailed Raven, but much larger, with a white patch on the head. Large enough to be confused with raptors, but more uniformly black than any raptor. The call is a rattling “g-r-r-r-r-r,” lower and rougher than typical crow and raven vocalizations.
识别特征
The thick-billed raven (Corvus crassirostris) is a large passerine bird in the family Corvidae. It is endemic to the Horn of Africa, including parts of Ethiopia, Eritrea, Sudan, and Somalia. The thick-billed raven shares with the common raven the distinction of being the world's largest corvid.
分类信息
Genus: Corvus; Family: Corvidae; Order: Passeriformes.
- 学名
- Corvus crassirostris
- 命名信息
- Rüppell, 1836
- 目
- Passeriformes
- 科
- Corvidae
- 属
- Corvus
分布与栖息地
Its range covers Eritrea, Somalia and Ethiopia; its habitat includes mountains and high plateau between elevations of 1,500 to 3,400 metres. It is one of several avian species endemic to northeastern tropical Africa.
- 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

Plain Swift
Apus unicolor
Medium-sized swift, very similar to Common Swift, but is noticeably paler, especially against a dark background. Wings are narrower and very pointed and the tail is longer and more deeply forked than Common or Pallid Swifts. Pale throat patch not distinct and difficult to see. Flight is very fast, agile, and erratic. Gives a shrill, wheezy scream that “hiccups” at the end. Breeds primarily on Madeira and the Canary Islands, but may move to North Africa in winter.

White-browed Nuthatch
Sitta victoriae
This exquisite nuthatch can only be found in a tiny portion of Myanmar’s southern Chin Hills. The gray-white-and-rust color scheme of this species is unmistakable. Occurs in oak-rhododendron forests at approximately 2300–2750 meters. Like other nuthatches, feeds actively along branches, typically singly or in pairs. Gives a bubbling trill and cheeps insistently.

Black Cuckoo
Cuculus clamosus
This large cuckoo has two morphs: (1) entirely black except for white tips to the long tail and sometimes limited white barring elsewhere, and (2) dark-backed with a rufous chest and black-and-white-barred underparts. The latter are more frequently found in West Central Africa. It has a characteristically swerving flight. It is resident and migrant, preferring thicker woodland and forest, It produces a mournful, three-noted call “I’m so saaaaad” call, the last note rising. Similar dark-morph Jacobin and Levaillant’s cuckoos differ from Black Cuckoo in having crests and strong white flashes in the wings.
开始您的观鸟之旅
在户外识别鸟类,并在下一次观察时随手查阅鸟类图鉴。