Broad-billed Sandpiper
Calidris falcinellus
Small, odd sandpiper with short legs and a long, thin bill, turned down at the tip. Upperparts dark, contrasting with the white underparts and streaky breast. Furtive, with a slow feeding action. When flushed, flight is low and often short. Bold head pattern, evident in all seasons, is the best feature to look for in winter-plumaged birds. Breeds in taiga bogs, usually at coasts and estuaries on migration and in winter.
识别特征
Broad-billed sandpipers are small waders, slightly smaller than the dunlin, but with a longer straighter bill, and shorter legs. The breeding adult has patterned dark grey upperparts and white underparts with blackish markings on the breast. It has a pale crown stripe and supercilia.<p>In the boreal winter, they are pale grey above and white below, like a winter dunlin, but retaining the head pattern. Juveniles have backs, similar to young dunlin, but the white flanks and belly and brown-streaked breast are distinctive.<p>Contact call is a dry, whistling “dree-it, dree-it” and a clicking “dik dik”.
分类信息
- 学名
- Calidris falcinellus
- 命名信息
- (Pontoppidan, 1763)
- 目
- Charadriiformes
- 科
- Scolopacidae
- 属
- Calidris
分布与栖息地
The broad-billed sandpiper is strongly migratory, spending the non-breeding season from easternmost Africa, through south and south-east Asia to Australasia. It is highly gregarious, and will form flocks with other calidrid waders, particularly dunlins. Despite its European breeding range, this species is rare on passage in western Europe, presumably because of the south-easterly migration route.<p>This bird's breeding habitat is wet taiga bogs in Arctic northern Europe and Siberia. The male performs an aerial display during courtship. They nest in a ground scrape, laying 4 eggs.<p>They forage in soft mud on marshes and the coast, mainly picking up food by sight. They mostly eat insects and other small invertebrates.<p>The broad-billed sandpiper is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
- 繁殖区
- PAL : patchily in low Arctic to subarctic tundra bogs of n Palearctic: Scandinavia to Kanin Pen. (nw Russia); Taimyr Pen. (nw Siberia) and Lena to Kolyma rivers (ne Siberia)
- 非繁殖区
- AF, OR, AU : Paleotropical coasts, e Africa, Red Sea and Persian Gulf through se Asia, Indonesian Arch., s New Guinea and Australia (except sw, sc, Tasmania)
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
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