Little Brown Bustard
Heterotetrax humilis
A small and relatively short-necked bustard. The male has a black-and-gray pattern on the head, while the female is plainer, but with abundant white spotting. Both sexes show a white belly. A white bar across the wing is conspicuous in flight. Found in dry savanna, shrubland, and semi-desert habitats. Often in pairs. Smaller than other bustards in its range. Somewhat like Buff-crested Bustard, but has a white rather than black belly.
识别特征
The smallest species in its genus, the little brown bustard reaches a maximum length of about 45 cm (18 in). They are light brown birds with whitish underparts. The male has a black tuft on the nape, and a black throat speckled with white. The female lacks these black areas, instead having heavy buff spotting on the back, wings and breast. Both male and female have dark flight feathers on the wings, and when flying show a slender white wing-bar, which divides the black feathers from the sandy-brown wing coverts. The female white-bellied bustard (Eupodotis senegalensis), which has a wider range, is larger and darker and has bluish-grey colouring on the back of the neck. The call of the little brown bustard is uttered with the neck outstretched and the head thrown back and is a high-pitched, rattling sound.
分类信息
- 学名
- Heterotetrax humilis
- 命名信息
- (Blyth, 1855)
- 目
- Otidiformes
- 科
- Otididae
- 属
- Heterotetrax
分布与栖息地
The little brown bustard is endemic to the Horn of Africa, where its range includes southern and eastern Ethiopia and northern and central Somalia. Its typical habitat is dry scrub and open thornbush, and it sometimes moves out onto tussocky plains. It occurs at altitudes of up to 1,500 m (5,000 ft).
- 迁徙
- Resident species
行为
Bustards are ground dwelling birds, walking briskly on sturdy legs, foraging as they go. They are able to fly but seem to prefer running and walking. The diet of the little brown bustard consists of seeds, buds, insects and small vertebrates such as lizards. The breeding season is from April to August; two eggs (occasionally three) are laid on the ground and incubated by the female.
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Red-winged Gray Warbler
Drymocichla incana
A plain pale gray warbler, slightly darker above, with distinctive brick-red wing panels and, if seen well, pale gray-green eyes and pinkish legs. Juvenile is washed brownish on the underparts. Pairs and small groups occur in woodland, especially favoring riverine forest and margins of swamps. Gives a loud cheerful duet “chi-weer, chi-weer, chi-weer” and other strident notes that often draw attention to it. Other co-occurring warblers are warmer brown or streaked.
Rufous-winged Tyrannulet
Mecocerculus calopterus
Small, warbler-like flycatcher found in the Andes and coastal hills. Mostly gray and white with whitish wingbars, white eyebrow, and rufous wing patches. Similar to Rufous-winged Antwren but lacks yellow on belly and has a gray crown. Actively forages at middle to upper levels of forest, and may join mixed-species flocks. Gives quiet but sharp notes, either alone or in a short series. Erratic in its occurrence and may seemingly be absent from some sites for months at a time; its movements have not been studied extensively.
Lewis's Woodpecker
Melanerpes lewis
A large, social woodpecker with a unique color pattern. Dark glossy-green above with a gray collar, dark red face, and pink wash on the belly. Sexes alike; juveniles are duller and browner than adults. Looks all dark at a distance, with a crowlike flight style. Found in open woodlands, sometimes close to human settlements. Often uses telephone poles to stash acorns; also sallies out from a conspicuous perch to catch insects.
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