Curlew sandpiper

Calidris ferruginea

The curlew sandpiper is a small wader that breeds on the tundra of Arctic Siberia. It is strongly migratory, wintering mainly in Africa, but also in south and southeast Asia and in Australasia. It is a vagrant to North America.
Curlew Sandpiper - Calidris ferruginea Curlew Sandpiper - Calidris ferruginea during migration in Europe Calidris ferruginea,Curlew sandpiper,Geotagged,Greece

Appearance

These birds are small waders, only slightly larger than dunlin at 19.5–21 cm in length, but differ from Dunlin in having a longer down-curved bill, longer neck and legs and a white rump. The breeding adult has patterned dark grey upperparts and brick-red underparts. In winter, this bird is pale grey above and white below, and shows an obvious white supercilium. Juveniles have a grey and brown back, a white belly and a peach-coloured breast.
Flock of Curlew sandpipers - Kalochori Lagoon, Greece Curlew sandpiper - Calidris ferruginea
The photo is not very good. Captured from a great distance, these small birds fly very quickly permanently changing direction. They can be seen on Balkan peninsula only during the migration period. Animalia,Aves,Bird,Calidris ferruginea,Central Macedonia,Charadriiformes,Chordata,Curlew sandpiper,Europe,Gallikos river estuaries,Geotagged,Greece,Kalochori,Scolopacidae,Shorebird,Spring,Thessaloniki,Wader,Wildlife

Behavior

The male curlew sandpiper performs an aerial display during courtship. The clutch of 3–4 eggs are laid in ground scrape in the tundra and taiga, mostly in Siberia.

It is extremely difficult to measure breeding success or population trends in their breeding grounds because nests are scattered over a vast region and their positions influenced by localised weather.

Of all shorebird species, the curlew sandpiper has the smallest breeding range in relation to its non-breeding range. After breeding these birds migrate south to Africa, Australasia or India. South Africa is at the southern limit of the migration path from Siberia, 15 000 km or 130 degrees of latitude away.

This wader is highly gregarious, and will form flocks with other calidrid waders, particularly dunlin. Despite its easterly breeding range, this species is regular on passage in western Europe, presumably because of the southwesterly migration route.

It forages in soft mud on marshes and the coast, mainly picking up food by sight. It mostly eats insects and other small invertebrates.

The numbers of this species depend on the population of lemmings. In poor lemming years, predatory species such as skuas and Snowy Owls will take Arctic-breeding waders instead.

Counts of the birds in South Africa, specifically at Langebaan Lagoon where they are most numerous, indicate a 40 percent decline in numbers between 1975 and 2009. A similar trend has been noted in Australia and may be linked to effects of global warming at the breeding grounds.

This species occasionally hybridizes with the sharp-tailed sandpiper and the pectoral sandpiper, producing the presumed "species" called "Cooper's sandpiper" and "Cox's sandpiper" , respectively.

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Status: Least concern
EX EW CR EN VU NT LC
Taxonomy
KingdomAnimalia
DivisionChordata
ClassAves
OrderCharadriiformes
FamilyScolopacidae
GenusCalidris
SpeciesC. ferruginea