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Curlew sandpiper
The curlew sandpiper (Calidris ferruginea) is a small wader that breeds on the tundra of Arctic Siberia. It is a strongly migratory bird, wintering mainly in Africa, but also in Australia, New Zealand, and south and southeast Asia. The curlew sandpiper is similar to the dunlin, and has a length of 18–23 cm (7.1–9.1 in) and wingspan of 38–41 cm (15–16 in). In breeding season it has a bright red underside. This picture shows a curlew sandpiper in Thailand, with its winter plumage.Photograph: JJ Harrison