Gray-backed Storm-Petrel
Garrodia nereis
A very small seabird of southern oceans. Gray-black on head, neck, throat, and top of breast. Back and upperwing are paler in color and rump is ash-gray. Note the white belly and white underwing with a black edge. Shows relatively short black legs and square tail. Forages in deep waters of the subantarctic; in the New Zealand region, rarely seen near the mainland. Differs from other black-and-white storm-petrels by its gray rather than white rump. White-faced Storm-Petrel also has a gray rump but is larger with longer legs, white on the face, and a more bounding flight.
识别特征
Grey-backed storm petrel is a small bird, 21-44 g in weight with a 39-40 cm wingspan. Like others in its family it is dark grey overall with a black head and belly, but it can be distinguished from other storm-petrels in its range by its light grey rump compared to the white rump on others. The Grey-backed petrel has a pale back, black legs, a square tail and a white belly.
分类信息
The genus Garrodia was created by William Alexander Forbes in 1881 and named after English zoologist Alfred Henry Garrod, while the specific descriptor is an allusion to the Nereids, the sea nymphs of Greek mythology.
- 学名
- Garrodia nereis
- 命名信息
- (Gould, 1841)
- 目
- Procellariiformes
- 科
- Hydrobatidae
- 属
- Garrodia
分布与栖息地
The grey-backed storm petrel has a distribution in the subantarctic in three disjunct populations, with one off of South America, on off of South Africa, and one off of Australia. It breeds in the Falkland Islands, Chatham Islands, Gough Island, Crozet Islands, Kerguelen Island, the New Zealand Subantarctic Islands, and Fiordland on the New Zealand mainland.
- 繁殖区
- SO : subantarctic islands: Falkland, South Georgia and Gough (s Atlantic Ocean), Crozet and Kerguelen (sw, se Indian Ocean), Macquarie (few; far se of Australia), Chatham, Antipodes and Auckland (e, se, and s of South I., New Zealand)
- 非繁殖区
- to s Tasman Sea and Antarctic Convergence
- 迁徙
- Complete migrants
行为
Grey-backed storm petrels are mostly solitary during the non-breeding season. They breed in large colonies from August to March, where they share parental duties.
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Finn's Weaver
Ploceus megarhynchus
Range-restricted weaver with a powerful dark bill. Male is predominantly yellow with a dark cheek patch. Female is streaky brown above and paler below; lacks the strong streaking and facial patterns of Streaked and Black-breasted Weavers. Female Finn’s is similar to female Baya Weaver, but note the darker coloration, lack of a pale brow stripe, and heavier, sharper-looking bill in female Finn’s. Inhabits open areas with scattered trees; favors wet areas. Colonial nester; males build ball-shaped nests, often in cotton trees.
Waterfall Swift
Hydrochous gigas
Largish dark swift with a stumpy body and a forked tail. As the name would suggest, associated with mountain waterfalls in forest areas; nests are placed close to the spray. Uniformly brown; larger and more long-winged than swiftlets. Sometimes forages in mixed flocks with other swifts, such as needletails.
Luzon Redstart
Phoenicurus bicolor
A fairly small bird of fast-flowing streams through foothill and montane forest or scrub. Slaty-blue with a rufous belly and tail. Female is a duller version of the male. Somewhat similar in color to Blue-headed Fantail, but has a shorter tail and is usually restricted to streams. Also similar to Blue Rock-Thrush, but smaller, with a dark tail. Song is a slightly ascending series of notes run together to sound like a quavering whistle.
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