Calidrid
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Calidrid
''Calidris'' is a genus of Arctic-breeding, strongly migratory wading birds in the family Scolopacidae. These birds form huge mixed flocks on coasts and estuaries in winter. They are the typical "sandpipers", small to medium-sized, long-winged and relatively short-billed. Their bills have sensitive tips which contain numerous corpuscles of Herbst. This enables the birds to locate buried prey items, which they typically seek with restless running and probing. Taxonomy The genus ''Calidris'' was introduced in 1804 by the German naturalist Blasius Merrem with the red knot as the type species. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The genus contain 24 species: * Great knot, ''Calidris tenuirostris'' * Red knot, ''Calidris canutus'' * Surfbird, ''Calidris virgata'' * Ruff, ''Calidris pugnax'' * Broad-billed sandpiper, ''Calidris falcinellus'' * Sharp-tailed sandpiper, ''Calidris acumi ...
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Sandpiper
Sandpipers are a large family, Scolopacidae, of waders. They include many species called sandpipers, as well as those called by names such as curlew and snipe. The majority of these species eat small invertebrates picked out of the mud or soil. Different lengths of bills enable different species to feed in the same habitat, particularly on the coast, without direct competition for food. Sandpipers have long bodies and legs, and narrow wings. Most species have a narrow bill, but otherwise the form and length are quite variable. They are small to medium-sized birds, measuring in length. The bills are sensitive, allowing the birds to feel the mud and sand as they probe for food. They generally have dull plumage, with cryptic brown, grey, or streaked patterns, although some display brighter colours during the breeding season. Most species nest in open areas, and defend their territories with aerial displays. The nest itself is a simple scrape in the ground, in which the bird typic ...
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Scolopacidae
Sandpipers are a large family, Scolopacidae, of waders. They include many species called sandpipers, as well as those called by names such as curlew and snipe. The majority of these species eat small invertebrates picked out of the mud or soil. Different lengths of bills enable different species to feed in the same habitat, particularly on the coast, without direct competition for food. Sandpipers have long bodies and legs, and narrow wings. Most species have a narrow bill, but otherwise the form and length are quite variable. They are small to medium-sized birds, measuring in length. The bills are sensitive, allowing the birds to feel the mud and sand as they probe for food. They generally have dull plumage, with cryptic brown, grey, or streaked patterns, although some display brighter colours during the breeding season. Most species nest in open areas, and defend their territories with aerial displays. The nest itself is a simple scrape in the ground, in which the bird typic ...
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Semipalmated Sandpiper
The semipalmated sandpiper (''Calidris pusilla'') is a very small shorebird. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific ''pusilla'' is Latin for "very small". It is sometimes separated with other "stints" in ''Erolia,'' but, although these apparently form a monophyletic group, the present species' old genus ''Ereunetes'' had been proposed before ''Erolia''. Description It is a small sandpiper, 13–15 cm (5.1-5.9 in) long and weighing around 20-32  g (0.7-1.1  oz). Wingspan ranges from 13.8-14.6 in (35-37 cm). Adults have black legs and a short, stout, straight dark bill. The body is dark grey-brown on top and white underneath. The head and neck are tinged light grey-brown. This bird can be difficult to distinguish from other similar tiny shorebirds, in particular the western sandpiper; these are known collectively as "peeps" or "stints". Breeding and h ...
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Surfbird
The surfbird (''Calidris virgata'') is a small stocky wader in the family Scolopacidae. It was once considered to be allied to the turnstones, and placed in the monotypic genus ''Aphriza'', but is now placed in the genus ''Calidris''. This bird has a short dark bill, yellow legs and a black band at the end of the white rump. In breeding plumage, it has dark streaks on the brownish head and breast with dark spots on its white underparts; the upperparts are dark with rust colouring on the wings. Birds in winter plumage and immature birds are mainly grey on the upperparts and breast and white on the underparts with streaking. Their breeding habitat is rocky tundra areas in Alaska and the Yukon. The female lays 4 eggs in a depression on the ground lined with vegetation. Both parents look after the young birds, who feed themselves. These birds migrate to the Pacific coasts of North and South America, from southern Alaska to Tierra del Fuego. On the nesting grounds, these birds main ...
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Rock Sandpiper
The rock sandpiper (''Calidris ptilocnemis'') is a small shorebird in the sandpiper family Scolopacidae. This is a hardy sandpiper that breeds in the arctic and subarctic regions of Alaska and the Chukotka and Kamchatka Peninsulas. It is closely related to the purple sandpiper that breeds in arctic regions of northeast Canada and the northwest Palearctic. Taxonomy The rock sandpiper was formally described in 1873 by the American ornithologist Elliott Coues and given the binomial name ''Tringa ptilocnemis''. It was formerly placed in the genus ''Erolia'', but is now placed with 23 other sandpipers in the genus ''Calidris'' that was introduced in 1804 by the German naturalist Blasius Merrem. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific epithet ''ptilocnemis'' combines the Ancient Greek ''ptilon'' meaning "feather" with ''knēmē'' meaning "leg". Within the genus ''Calidris'' the r ...
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Dunlin
The dunlin (''Calidris alpina'') is a small wader, formerly sometimes separated with the other "stints" in the genus ''Erolia''. The English name is a dialect form of "dunling", first recorded in 1531–1532. It derives from ''dun'', "dull brown", with the suffix ''-ling'', meaning a person or thing with the given quality. It is a circumpolar breeder in Arctic or subarctic regions. Birds that breed in northern Europe and Asia are long-distance migrants, wintering south to Africa, southeast Asia and the Middle East. Birds that breed in Alaska and the Canadian Arctic migrate short distances to the Pacific and Atlantic coasts of North America, although those nesting in northern Alaska overwinter in Asia. Many dunlins winter along the Iberian south coast. Taxonomy The dunlin was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae'' under the binomial name ''Tringa alpina''. Linnaeus specified the location as Lapland. Th ...
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Sanderling
The sanderling (''Calidris alba'') is a small wading bird. The name derives from Old English ''sand-yrðling'', "sand-ploughman". The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific, ''alba'', is Latin for "white". It is a circumpolar Arctic breeder, and is a long-distance migrant, wintering south to South America, South Europe, Africa, and Australia. It is highly gregarious in winter, sometimes forming large flocks on coastal mudflats or sandy beaches. It is somewhat unlike other sandpipers in appearance, which has led to the suggestion that it should be placed into a monotypic genus ''Crocethia''. A more recent review (Thomas ''et al.'', 2004) indicates, however, that the sanderling is a fairly typical "stint" or small sandpiper and should be separated from the large knots with its closest relatives in a distinct genus. This bird is similar in size to a dunlin, but stouter, with a ...
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Red-necked Stint
The red-necked stint (''Calidris ruficollis'') is a small migratory wader. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific ''ruficollis'' is from Latin ''rufus'', "red" and ''collum'', "neck". Description These birds are among the smallest of waders, very similar to the little stint, ''Calidris minuta'', with which they were once considered conspecific. The red-necked stint's small size, fine dark bill, dark legs and quicker movements distinguish this species from all waders except the other dark-legged stints. It measures in length, in wingspan and in body mass. It can be distinguished from the western sandpiper and the semipalmated sandpiper in all plumages by its combination of a fine bill tip, unwebbed toes, and longer primary projection. The breeding adult has an unstreaked orange breast, bordered with dark markings below, and a white V on its back. In winter plumage identifi ...
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Spoon-billed Sandpiper
The spoon-billed sandpiper (''Calidris pygmaea'') is a small wader which breeds on the coasts of the Bering Sea and winters in Southeast Asia. This species is highly threatened, and it is said that since the 1970s the breeding population has decreased significantly. By 2000, the estimated breeding population of the species was 350–500. Taxonomy ''Platalea pygmea'' was the scientific name proposed by Carl Linnaeus in 1758. It was moved to ''Eurynorhynchus'' by Sven Nilsson in 1821. It is now classified under the calidrid sandpipers. Description The most distinctive feature of this species is its spatulate bill. The breeding adult bird is 14–16 cm in length, and has a red-brown head, neck and breast with dark brown streaks. It has blackish upperparts with buff and pale rufous fringing. Non-breeding adults lack the reddish colouration, but have pale brownish-grey upperparts with whitish fringing to the wing-coverts. The underparts are white and the legs are black.Bir ...
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Long-toed Stint
The long-toed stint (''Calidris subminuta'') is a small wader. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific ''subminuta'' is from Latin ''sub'', "near to" and ''minuta'', "small" from its similarity to the little stint, ''Calidris minuta''. It breeds across northern Asia and is strongly migratory, wintering in south and south east Asia and Australasia. It occurs in western Europe only as a very rare vagrant. This bird has yellowish legs and a short thin dark bill. Breeding adults are a rich brown with darker feather centres above and white underneath. They have a light line above the eye and a brown crown. In winter, long-toed stints are grey above. The juveniles are brightly patterned above with rufous colouration and white mantle stripes. This bird can be difficult to distinguish from other similar tiny waders which are known collectively as "peeps" or "stints". In particular, ...
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Temminck's Stint
Temminck's stint (''Calidris temminckii'') is a small wader. This bird's common name and Latin binomial commemorate the Dutch naturalist Coenraad Jacob Temminck. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. Temminck's stint is one of the species to which the ''Agreement on the Conservation of African-Eurasian Migratory Waterbirds'' (AEWA) applies. Description These birds are very small waders, at length. They are similar in size to the little stint (''Calidris minuta'') but shorter legged and longer winged. The legs are yellow and the outer tail feathers white, in contrast to little stint's dark legs and grey outer tail feathers. This is a rather drab wader, with mainly plain brown upperparts and head, and underparts white apart from a darker breast. The breeding adult has some brighter rufous mantle feathers to relieve the generally undistinguished appearance. In winter plumage, the genera ...
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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 strongly migratory, wintering mainly in Africa, but also in south and southeast Asia and in Australia and New Zealand. It is a vagrant to North America. Taxonomy The curlew sandpiper was formally described in 1763 by the Danish author Erik Pontoppidan under the binomial name ''Tringa ferrugineus''. It is now placed with 23 other sandpipers in the genus ''Calidris'' that was introduced in 1804 by the German naturalist Blasius Merrem. The genus name is from Ancient Greek ''kalidris'' or ''skalidris'', a term used by Aristotle for some grey-coloured waterside birds. The specific ''ferruginea'' is from Latin ''ferrugo, ferruginis'', "iron rust" referring to its colour in breeding plumage. The curlew sandpiper is treated as monotypic: no subspecies are recognised. Within the genus ''Calidris'' the curlew sandpiper is most closely related to the stilt sandpiper (''Calidr ...
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