Jamaican Crow
Corvus jamaicensis
An all black and somewhat large species that prefers wet forests but also occurs in open woodlands. Often found perched high on bare branches of trees or working epiphyte clumps and tree nooks in search of large insects and small lizards. All species in its range that are entirely black are considerably smaller than the Jamaican Crow. Calls include emphatic harsh “raaaa,” given singly or in series, a more leisurely “craaa-aa” and variations thereof, and somewhat of a musical burbling.
识别特征
The overall appearance is sooty-grey, not at all glossy, like its relatives; though it does possess a similar dark grey patch of naked skin just behind the eye, and a smaller naked patch at the base of the bill. The bill itself is slate-grey and quite deep, tapering to a sharp point. The nasal bristles are relatively sparse usually leaving the nostrils on view. The iris is either grey-brown or red-brown, possibly depending on age. The legs and feet are black.<p>The voice, like its two nearest relatives, is very distinctive and consists of various jabbering and bubbling sounds (thus its common Jamaican Patois name, jabbering crow), but also a more leisurely “craaa-aa” and variations thereof, and somewhat of a musical burbling.
分类信息
The Jamaican crow, under the name "chattering crow", was described by the English naturalists John Ray in 1713 and Hans Sloane in 1725. The Irish physician Patrick Browne used the name "gabbling crow" for the species in 1756. In France the naturalists Mathurin Jacques Brisson in 1760 and Comte de Buffon both used the name "La corneille de la Jamaique". A binomial name was not introduced until 1788 when the German naturalist Johann Friedrich Gmelin revised and expanded Carl Linnaeus's Systema Naturae and coined the binomial name Corvus jamaicensis. The species is monotypic: no subspecies are recognised.
- 学名
- Corvus jamaicensis
- 命名信息
- Gmelin, JF, 1788
- 目
- Passeriformes
- 科
- Corvidae
- 属
- Corvus
分布与栖息地
As its name suggests, this species is found on the island of Jamaica, where it inhabits woodland mixed with cleared areas, and can be frequently found in larger gardens. Though primarily a bird of hill and mountain forest, it comes down to lower elevations during the dry season, where it is more likely to be seen.
- 迁徙
- Vertical migration
行为
A forest crow by nature, its food requirements contain a significant proportion of fruit taken from trees, either in pairs or small groups. It also probes under bark and leaf litter for small invertebrates and lizards, and it is known to raid other birds nests of both eggs and nestlings.<p>The nest itself is usually built in tall trees; this species may also use tree holes as a possible nesting option, although not yet recorded for this species and its breeding habits.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Gray-backed Cisticola
Cisticola subruficapilla
Medium-sized, streak-backed cisticola of uplands. Varies geographically: gray-backed and streak-breasted in the south, and rufous-backed and plain-breasted in the north. Found in fynbos and karoo habitats, usually in areas with a mix of rocks, shrubs, and grass. Generally inconspicuous; seen singly or in pairs. Song is a short, explosive, accelerating trill. Calls include a rising, two-part “chu-cheee”. Very similar to Wailing Cisticola, but has a different voice, a smaller bill, less buffy underparts, and doesn’t show rufous in the wing.
Hooded Munia
Lonchura spectabilis
A strikingly four-colored tiny finch. Head pitch black, back rich brown, breast and belly pure white, bill thick and silver. In the eastern highlands of Papua New Guinea, belly is grayish-orange. Found in any open grassland, scrub, or plain. Other munias occur in the same areas, but Hooded’s bold color patterns make for simple identification. Most common call is a chorus of soft “peep” and “see” notes.
Palawan Sunbird
Cinnyris aurora
Tiny and active sunbird of forest edges and open woodlands, endemic to Palawan. Male is olive-gray above, with an extensive iridescent blue-black throat, an orange breast patch, and a pale yellow belly. Female is olive above, with a bright yellow eyebrow and underparts; compare with the smaller and duller female Lovely Sunbird, as well as the larger and duller Brown-throated Sunbird. In both sexes, note white tail edges that are flared out in flight. Gives a bright, fizzy song and rising “weet?” notes. Formerly grouped with other, closely related species under “Olive-backed Sunbird.”
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