Rusty-barred Owl
Strix hylophila
Uniform buffy-brown owl with dark eyes. Mottled brown and white above and lightly barred on the breast. Found in montane, lowland humid and second growth, preferring areas with dense understory. Both sexes give a high-pitched meow and low harsh “grugrugru, grugrugru.”
识别特征
The rusty-barred owl is about 35 cm (14 in) long. Males weigh 250 to 340 g (8.8 to 12 oz) and females 275 to 395 g (9.7 to 14 oz). The species has light rusty brown facial discs with concentric darker brown rings and small white "eyebrows". Adults' upperparts have white, brown, and orange-buff barring. The chest and flanks are orangish buff and the belly is whiter; both areas have dark brown bars. The legs are feathered. The eyes are dark brown, the bill yellowish horn, and the toes yellowish gray. Juveniles are overall buff with faint darker barring.
分类信息
The rusty-barred owl is one of seven members of genus Strix found in South America, according to the International Ornithological Committee (IOC). It appears to be most closely related to the Chaco owl (S. chacoensis) and rufous-legged owl (S. rufipes). All three have vocalizations that are very different from those of other Strix owls and genetic studies may find that they belong in their own genus. The rusty-barred owl is monotypic.
- 学名
- Strix hylophila
- 命名信息
- Temminck, 1825
- 目
- Strigiformes
- 科
- Strigidae
- 属
- Strix
分布与栖息地
The rusty-barred owl is found in southeastern Brazil from Minas Gerais to Rio Grande do Sul, in southeastern Paraguay, and in Argentina's extreme northeastern Misiones Province. It inhabits the interior and edges of a variety of wooded landscapes including montane, tropical evergreen, and temperate forest; secondary forest; and pine platations. It can be found close to human habitation. In elevation it ranges from sea level to at least 1,000 m (3,300 ft).
- 迁徙
- Resident species
行为
The rusty-barred owl is believed to be a year-round resident throughout its range.<p>The rusty-barred owl is a nocturnal hunter. Though its diet has not been extensively studied, it is known to include small mammals, birds, and arthropods, and probably also reptiles and amphibians. One study in Brazil found that about three quarters of the prey was rodents, and marsupials were most of the other quarter. It sometimes forages in the forest canopy.<p>The rusty-barred owl's breeding season appears to be between August and October, though it has also been reported to be between December and March. It nests in a cavity in a tree. The female incubates the clutch of two or three eggs for 28 to 29 days. Males provision the female and nestlings and are reported to also brood nestlings. Young leave the nest 32 to 35 days after hatch and are independent about three months after that.<p>The rusty-barred owl's song is a "frog-like deep grunting 'grugruu-grugruugrugru'." Both sexes sing, sometimes in duet. They also make "rrrrroh" and "long-drawn 'i-ew-eh'" calls.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Blackish Oystercatcher
Haematopus ater
Distinctive large chunky shorebird of rocky coasts, adjacent sandy beaches and river mouths. The only all-dark oystercatcher in South America, readily identified by wholly dark plumage, long orange-red bill, thick pinkish legs. Found as singles and pairs, less often small flocks (mainly when roosting), and associates readily with Magellanic and especially American Oystercatchers. Loud piping whistles sound similar to American Oystercatcher.
Yellow-rumped Serin
Crithagra xanthopygia
A very plain gray-brown seedeater with a white throat and a yellow rump that is conspicuous in flight. Found locally in savanna, woodland, and cultivated areas, usually in small flocks. Similar to Reichenow’s Seedeater, but has a weaker facial pattern and usually less streaking below. Separated from White-rumped Seedeater by the yellow rump and the whiter throat. Also similar to Yellow-throated and Salvadori’s Serins, but separated by the white rather than yellow throat. The song is a constant stream of musical whistles and trills.
Red-faced Barbet
Lybius rubrifacies
Chunky, medium-sized black barbet. There is red on the face, and the bottom part of the wing has white edging. Found locally in woodland, cultivated areas, and gallery forest. Usually in pairs or small groups. The call is an unmusical duet of low, rasping calls. Similar to Black-billed Barbet, but not known to overlap in range, and easily separated by lack of red on the throat or white edges to the top part of the wing.
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