Nordmann's Greenshank
Tringa guttifer
Rare and declining Asian shorebird. Similar to Common Greenshank, with a burlier, more bull-headed appearance, shorter legs, and thicker bill. Breeding adult mostly gray above, white below, with densely spotted breast and upper sides. Nonbreeding adult pearly gray above and snowy white below. Bicolored bill is olive-green at the base, darkening towards the tip. Call is distinctive, usually a single nasal note, instead of the mellow “tu-tu-tu!” of Common Greenshank. Breeds in coastal marsh and sparse wet forests; winters on mudflats, coastal wetlands, aquaculture ponds, and paddies.
识别特征
The Nordmann's greenshank is a medium-sized sandpiper, at 29–32 cm (11–13 in) long, with a slightly upturned, bicoloured bill, and relatively short yellow legs. Breeding adults are boldly marked, with whitish spots and spangling on black upperside; heavily streaked head and upper neck; broad, blackish, crescentic spots on lower neck and breast; and darker lores.
分类信息
It is fairly aberrant and was formerly placed in the monotypic genus Pseudototanus. It is an endangered species, and was not available for molecular analyses in Pereira & Baker's study (2005) of the genus Tringa. It appears closest overall to the semipalmata-flavipes and the stagnatilis-totanus-glareola groups, though it also has some similarities to the greater yellowlegs and common greenshank.
- 学名
- Tringa guttifer
- 命名信息
- (Nordmann, 1835)
- 目
- Charadriiformes
- 科
- Scolopacidae
- 属
- Tringa
分布与栖息地
The Nordmann's greenshank breeds in eastern Russia along the south-western and northern coasts of the Sea of Okhotsk and on Sakhalin Island. Its non-breeding range is not fully understood, but significant numbers have been recorded in South Korea, mainland China, Hong Kong, and Taiwan on passage, and in Bangladesh, Thailand, Cambodia, Vietnam and Peninsular Malaysia in winter. It has also been recorded on passage or in winter in Japan, North Korea, India, Sri Lanka, Myanmar (which may prove to be an important part of its wintering range), Singapore, the Philippines and Indonesia. There are unconfirmed records from Nepal and Guam (to US). It probably has a population of 500–1,000 individuals. It has been recorded several times on 80-mile beach in Western Australia and most recently an individual was discovered on Cairns Esplanade in Queensland, Australia. It was known to have over-wintered there from December 2020 to May 2021. In mid-December 2021 what is thought to be the same individual bird, returned to Cairns Esplanade. It has now returned for four straight seasons, being regularly seen in 2022 and 2023.
- 繁殖区
- PAL : coastal larch forest of ne Palearctic: w, s coastal Sea of Okhotsk, Tatar Strait (w of Sakhalin) and Sakhalin (e Siberia)
- 非繁殖区
- OR : coastal mudflats and saltpans of tropical s se Asia: se Bangladesh, s Myanmar, s Thailand, Malay Pen., Sumatra and sw Borneo
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Pterodroma leucoptera
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A long-legged, plump-bodied, mostly ground-dwelling bird with a bright red belly, dark blue wings, a greenish back, a bright red collar, a darker red crown, a light blue chest, and a brownish face. Resident in primary forest and forest edge habitats. Unique within its range. Voice is a low, trembling, raspy double-noted whistle, “croooo-eeeee.”
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