Chaco Chachalaca
Ortalis canicollis
Large noisy bird with a long tail. Rather uniform brown plumage with little contrast between its head and the rest of the body. Inhabits swampy forest, savanna, and second growth, where found in groups which may exceed 30 individuals. Feeds on fruits and seeds on the ground or in trees. Gives a typical loud chachalaca song, a rollicking duet “bink, ka chee chaw raw taw, chaw raw taw, chaw raw taw.” Calls include a low “cha-cha-cha.”
识别特征
The Chaco chachalaca is 50 to 56 cm (1.6 to 1.8 ft) long and weighs 479 to 678 g (1.1 to 1.5 lb). The nominate subspecies' head, back, and breast are gray and the belly tan to brown. It has bare pinkish red skin around the eye. O. c. pantanalensis is browner and the facial skin is more purplish than pinkish.
分类信息
The Chaco chachalaca has two recognized subspecies, the nominate Ortalis canicollis canicollis (Wagler, 1830) and O. c. pantanalensis (Cherrie and Reichenberger, 1921). The latter might actually be a subspecies of plain chachalaca (O. vetula) or a species in its own right. The Paraguayan population has been treated as a separate subspecies but that status has not been generally accepted.
- 学名
- Ortalis canicollis
- 命名信息
- (Wagler, 1830)
- 目
- Galliformes
- 科
- Cracidae
- 属
- Ortalis
分布与栖息地
The nominate subspecies of Chaco chachalaca is found in the Gran Chaco of eastern Bolivia, western Paraguay, and northern Argentina. O. c. pantanalensis is found in southwestern Mato Grosso and Mato Grosso do Sul of Brazil. There are also unconfirmed reports of it in neighboring Bolivia and Paraguay. The South American Classification Committee of the American Ornithological Society considers the species to be hypothetical in Uruguay.<p>The Chaco chachalaca inhabits a variety of landscapes including lowland swamp forest and scrub, dry subtropical forest, semi-deciduous and gallery forest, and palm groves. It can be found in both mature and secondary forest. In Brazil and Paraguay it is found only at low elevations but can be found as high as about 1,000 m (3,300 ft) in Argentina.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Malaita White-eye
Zosterops stresemanni
Small. Olive-green above with a yellow belly and vent. Chest mottled buffy-olive. Bill long and fleshy. Note the thin black eye-ring and smudge in front of the eye. Common in primary forest, less common in other scrub and forest. Song reported to be melodious. Calls include a high-pitched “sit” and “peep.”
Bamboo Antshrike
Cymbilaimus sanctaemariae
Small antshrike of bamboo thickets in lowland rainforest. Found primarily in bamboo forests, but occasionally also in other densely vegetated thickets such as vine tangles and cane stands. Males are finely barred black-and-white. Females are reddish brown above and dull yellow below, with black barring throughout. Both sexes have a prominent crest and hook-tipped bill. Similar to Fasciated Antshrike, but separated by brown eye (not red), less heavy bill, and voice; listen for its song, a series of loud, metallic “chink” notes, given at an even pace of about three notes per second.
Green-headed Oriole
Oriolus chlorocephalus
Old World oriole with mostly yellow plumage, a dull-green hood, and a red bill. Found in forest, forest edge, lush woodland, and adjacent secondary habitats, at low and middle elevations. Song is a series of slurred, liquid whistles, and calls include a raspy, up-slurred whine. Similar to African Black-headed Oriole, but with a good view, easily separated by the green rather than black hood. Often found in the same areas as Eurasian Golden and African Golden Orioles, but distinguished by being hooded rather than yellow-headed.
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。