Buff-browed Chachalaca
Ortalis superciliaris
Small chachalaca, brown overall with a pale buff eyebrow. Found in edge habitats, thickets, and young second-growth forests, even at the edge of urban areas. Song is typical of a chachalaca: a noisy, high-pitched, raucous “TJURRE-wruh,” repeated continually.
识别特征
The buff-browed chachalaca is the smallest member of genus Ortalis. It is 42 to 46 cm (1.4 to 1.5 ft) long. Its crown, neck, and upper breast are gray and the rest of its upperparts brown. Its lower breast and belly are tan. The central tail feathers are dark green-brown with chestnut tips; the outer ones are chestnut. Unique among Ortalis, it has a prominent supercilium that can be any color from buffy white to pale cinnamon. Its facial skin is dark slate gray.
分类信息
What is now the buff-browed chachalaca was previously a subspecies of what was then called variable chachalaca (Ortalis motmot). (Confusingly, after the split the International Ornithological Committee (IOC) renamed O. motmot "little chachalaca" but the American Ornithological Society (AOS) and the Clements taxonomy retained the name "variable" for it.) It is monotypic.
- 学名
- Ortalis superciliaris
- 命名信息
- Gray, GR, 1867
- 目
- Galliformes
- 科
- Cracidae
- 属
- Ortalis
分布与栖息地
The buff-browed chachalaca is found in northeastern Brazil south of the Amazon River in parts of the states of Pará, Maranhão, Ceará, Tocantins, and Piauí. It is a bird of the lowlands, inhabiting scrublands and forest thickets including those in heavily degraded areas.
- 迁徙
- Resident species
行为
No formal study of the buff-browed chachalaca's diet has been published, but it has been observed eating palm fruits and some flowers.<p>A study of the buff-browed chachalaca's breeding phenology in Pará found a nesting season between December and February, but active nests have been found in other months as well. One described nest was a flat structure of twigs with leaves and grasses. Nests have been found in a tree fork, on top of tall grass, and in dense bushes. The typical clutch size is two or three eggs.<p>The buff-browed chachalaca's vocalizations are "typical of Ortalis"; they are higher pitched and less raucous than those of chestnut-headed chachalaca (O. ruficeps).
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Sulu Pygmy Woodpecker
Yungipicus ramsayi
A small woodpecker of lowland wooded areas on the Sulu Islands. Dark brown above with some white spots on the back, a white rump, throat, and underparts with faint streaking, and buffy sides of the chest. Note the alternating dark brown and white stripes on the head, with a dark forecrown. Hind crown is dark in females and bright red in males. Unmistakable. No other similarly sized woodpeckers occur in its range. Voice includes a series of rapid notes in a forceful trill.
Red-rumped Tinkerbird
Pogoniulus atroflavus
A small barbet of forest and forest edge that appears large when compared to other tinkerbirds. The black upperparts contrast with the yellow wing feather edging, yellowish underparts, and yellowish moustache. When seen at the right angle, shows a bright red rump. While it is often found high in the trees, it sometimes descends lower, even singing near ground level in thick vegetation. This species can be confused with Yellow-throated and Yellow-rumped Tinkerbirds, but note Red-rumped Tinkerbird’s song, its more uniformly yellowish underparts, and, when visible, its bright red rump. Song is a long, continuous series of “po, po, po” notes given at a rate of about two per second. Also gives other shorter, faster trills reminiscent of other tinkerbirds.
Red-tailed Laughingthrush
Trochalopteron milnei
An exquisitely- and distinctively-colored laughingthrush, though often shy and unwilling to stray far from cover outside of areas where habituated to human feeding. Mostly dark, ashen gray but has silvery cheeks, an orange crown, and bright red wings and tail, which are often seen as flashes in the gloomy undergrowth of thick evergreen forest. Chatters constantly and (often frustratingly) frequently as it moves around in large flocks in hill forest and forest edge. Listen for its song, a distinctive whistled “woouuu-weee!”, sometimes followed by rising, laughing “dee-dee!” notes.
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