- Calidris ferruginea
Length 18–23 cm, wingspan 38-41 cm, weight 44-117 g
- Long black de-curved bill
- White uppertail coverts and lower rump
- Longish black legs
- Orange, black and white patterned above
- Brick red below
- Pale sandy-grey upperparts
- White underparts
- White supercilium
- Grey and brown scalloped back
- White belly and flanks
- Peachy breast
Winter adult can resemble Dunlin; that differs in shorter bill, black stripe down the middle of the rump, and slightly shorter legs; juvenile Dunlin also differs in streaked flanks, and streaked (not peachy) breast. White-rumped Sandpiper and Stilt Sandpiper share white uppertail coverts in flight, but differ structurally; Stilt Sandpiper also has yellowish, not black, legs. Summer plumage Red Knot is larger and lighter, more orange-toned below, and has a shorter, straighter bill.
Arctic Siberia, migrating through temperate Europe and Asia (north in May, and south in August-September) to winter in tropical Africa, south and southeast Asia and Australasia. A vagrant to North America.
Breeds on high arctic tundra; on passage and wintering in marshes, wet fields, muddy estuaries, and salt pans.
The diet includes snails, worms and flies.
The nest is a ground scrape and 3-4 eggs are laid.
Flight call: chirrip (lower pitched than Temminck's Stint)
- Template:Ref-Clements6thOctober22#Collins Bird Guide ISBN 0 00 219728 6
- BirdForum Opus contributors. (2023) Curlew Sandpiper. In: BirdForum, the forum for wild birds and birding. Retrieved 11 December 2023 from https://www.birdforum.net/opus/Curlew_Sandpiper
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