Long-billed Corella
Cacatua tenuirostris
Medium-sized white cockatoo with a small crest and an extremely long, pointed upper mandible. Body entirely white with pink patches around eye and chin. Typically occurs in grassy habitat, and is often seen feeding in parks or sporting grounds. It uses its long upper mandible to dig for roots and seeds. Its call is more clipped and staccato than Little Corella. Native to southeastern Australia but numerous feral populations exist elsewhere, typically in suburban areas.
识别特征
The adult long-billed corella measures from 38 to 41 cm in length, has a wingspan around 80–90 cm, and averages 567 g in weight. It has a long, bone-coloured beak, and a rim of featherless, bluish skin around the eyes. The plumage is predominantly white with reddish feathers around the eyes and lores. The underside of the wings and tail feathers are tinged with yellow.
分类信息
The long-billed corella does not have any recognized subspecies. The first formal written description was by German naturalist Heinrich Kuhl in 1820. It is one of several related species of cockatoos called corellas and classified in the subgenus Licmetis within the genus Cacatua, members of which are known as "white cockatoos".
- 学名
- Cacatua tenuirostris
- 命名信息
- (Kuhl, 1820)
- 目
- Psittaciformes
- 科
- Cacatuidae
- 属
- Cacatua
分布与栖息地
The long-billed corella can be found in the wild in Victoria and southeastern New South Wales. It has extended its range since the 1970s into Melbourne, Victoria and can now be found in Tasmania, South Australia and southeast Queensland. A feral population resides in Perth, Western Australia as of the mid-1980s, which has conservation implications as this species may hybridize with the endangered western corella. <p>The long-billed corella is found in grassy woodlands and grasslands, including pasture, fields of agricultural crop, and urban parks.
- 迁徙
- Resident species
行为
The call of the long-billed corella is a quick, quavering, falsetto currup!, wulluk-wulluk, or cadillac-cadillac combined with harsh screeches.<p>Breeding generally takes place in Austral winter to spring (from July to November). Long-billed corellas form monogamous pairs and both sexes share the task of building the nest, incubating the eggs, and caring for the young. Nests are made in decayed debris, the hollows of large old eucalypts, and occasionally in the cavities of loose gravely cliffs. 2–3 dull white, oval eggs are laid on a lining of decayed wood. The incubation period is around 24 days and chicks spend about 56 days in the nest.<p>The long-billed corella typically digs for roots, seeds, corms, and bulbs, especially from the weed onion grass. Native plants eaten include murnong Microseris lanceolata, but a substantial portion of the bird's diet now includes introduced plants.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Striated Earthcreeper
Geocerthia serrana
Handsome bird with a long, curved bill found only in the high Andes of northern and central Peru. It is brown with chestnut wings and tail, heavily streaked underparts, and white eyebrows. Inhabits areas with dense cover to hide in, but often ventures out into the open to feed. While largely terrestrial, it often perches higher, especially to sing. Gives a variety of harsh, rattling vocalizations.
White-headed Brushfinch
Atlapetes albiceps
Distinctive brushfinch of dry forest and scrub in northwestern Peru and southwestern Ecuador. Most common in lower Andean slopes and in coastal hills, and usually does not range down into the lowlands. It is the only brushfinch with a white face and black crown; also note the dark mustache and white wing patch. Usually found in pairs. Feeds mostly on the ground, but sometimes comes up to the top of a bush to look around.
Western Citril
Crithagra frontalis
Small seedeater with a sharp bill and forked tail. The upperparts are olive-green and the underparts pale yellow with some sparse streaking. Both sexes have a strong pale yellow eyebrow, and males also have a bold black face patch. Found at middle and high elevations in a variety of habitats including forest edge, gardens, cultivation, moist scrub, and woodland. Usually in small flocks. The song is a fast jumble of high-pitched notes. Similar to Papyrus Canary, but found in a different habitat, less streaked below, and the male is easily separated by its black face.
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