Southern Red-billed Hornbill
Tockus rufirostris
A small, black-and-white hornbill with a petite red bill; male has a black base to the mandible. Pairs occur in open savanna with sparse ground cover, where they hop on the ground foraging for invertebrates. The territorial display, given with the head bowed and wings spread, starts with a series of “kok-kok-kok” notes, becoming a rolling bisyllabic “kokok-kokok”. Similar Damara Red-billed Hornbill differs by having brown (not yellow) eyes and an unmarked creamy white head and neck. Jackson’s Hornbill is larger, with a more robust bill and dark face and eyes. Crowned Hornbill has a solidly brown back and orange bill.
识别特征
The sexes are similar, but males are larger and heavier. Males also have somewhat longer bills, with the lower mandible coloured black to a variable extent. It is distinguishable from other red-billed hornbills by the combination of yellow iris and pale orbital skin (pink to greyish), and the ample blackish plumage streaking from the ear coverts to the side of the neck.[citation needed] The throat is white, and the wing coverts clearly spotted.
分类信息
- 学名
- Tockus rufirostris
- 命名信息
- (Sundevall, 1850)
- 目
- Bucerotiformes
- 科
- Bucerotidae
- 属
- Tockus
分布与栖息地
It is found from Malawi and Zambia to southern Angola, northeastern Namibia, Botswana, Zimbabwe, eastern Eswatini and northern South Africa (Transvaal and northern KZN province). It occurs in the upper Zambezi valley of Mozambique, but is mostly absent from the eastern lowlands.
照片
鸟叫声
其他鸟类
African Swift
Apus barbatus
A dark, bulky, powerful, high-flying swift with a distinctly white throat patch and a contrasting grayish panel in the inner wing. It is resident in the northern part of its range and breeding migrant in South Africa. Masters of the air, foraging birds fly fast and can cover 1000 km/day, they gather at termite emergences and fires in order to hawk insects. The African Swift has a high-pitched screaming “zzzzzzzzzZZZZTTT” call. The similar Common Swift differs from African Swift by having a smaller throat patch and lacking a pale panel in the wing. Nyanza Swift is browner than African Swift and has a paler wing panel in the inner wing.
Yellow-bellied Chat-Tyrant
Silvicultrix diadema
Small flycatcher found in subtropical and temperate zones of the Andes from Venezuela to Peru. Like most chat-tyrants, has a very bold eyebrow. Yellow-bellied is the only chat-tyrant that looks mostly yellow and is especially bright on the belly and throat. Note rufous wingbars. Singles or pairs are typically found in the understory of cloud forest and edges, especially near bamboo, but can be inconspicuous.
Little Cormorant
Microcarbo niger
An all black ducklike waterbird with a distinctive flattish head and a bill that is sharply hooked at the tip. Smallest of the cormorants found in the region. Breeding adults have white plumes on the sides of the head. Like all cormorants, frequently seen swimming with its body low in the water, head and neck pointing upward, and suddenly disappearing underwater to catch fish. Often perches upright on a rock, drying itself with outstretched wings. Seen singly or in small groups in inland water bodies. Similar to Indian Cormorant, but note smaller size, stouter bill, and shape of the head, flat on Little Cormorant and rounded on Indian Cormorant.
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