Eurasian curlew | |
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A male Eurasian curlew | |
Song | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Charadriiformes |
Family: | Scolopacidae |
Genus: | Numenius |
Species: | N. arquata |
Binomial name | |
Numenius arquata | |
Global map of N. arquata reports submitted to eBird Year-Round Range Summer Range Winter Range | |
Synonyms | |
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The Eurasian curlew or common curlew (Numenius arquata) is a very large wader in the family Scolopacidae. It is one of the most widespread of the curlews, breeding across temperate Europe and Asia. In Europe, this species is often referred to just as the "curlew", and in Scotland known as the "whaup" in Scots.
The Eurasian curlew was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Scolopax arquata. [2] It is now placed with eight other curlews in the genus Numenius that was introduced by the French ornithologist Mathurin Jacques Brisson in 1760. [3] [4] The genus name Numenius is from Ancient Greek νουμήνιος, noumēnios, a bird mentioned by Hesychius. It is associated with the curlew because it appears to be derived from neos, "new" and mene "moon", referring to the crescent-shaped bill. The species name arquata is the Medieval Latin name for this bird, derived from Latin arcuatus, "bow-shaped", and again referring to the shape of the bill. [5]
The English name "curlew" is imitative of the Eurasian curlew's call, but may have been influenced by the Old French corliu, "messenger", from courir , "to run". It was first recorded in 1377 in Langland's Piers Plowman "Fissch to lyue in þe flode..Þe corlue by kynde of þe eyre". [6]
Three subspecies are recognised: [4]
The Eurasian curlew is the largest wader in its range, at 50–60 cm (20–24 in) in length, with an 89–106 cm (35–42 in) wingspan and a body weight of 410–1,360 g (0.90–3.00 lb). [7] It is mainly greyish brown, with a white back, greyish-blue legs and a very long curved bill. Males and females look identical, but the bill is longest in the adult female. It is generally not possible to recognize the sex of a single Eurasian curlew, or even several ones, as there is much variation; telling male and female of a mated pair apart is usually possible however. The familiar call is a loud curloo-oo.
The only similar species over most of the curlew's range is the Eurasian whimbrel (Numenius phaeopus). The whimbrel is smaller and has a shorter bill with a kink rather than a smooth curve. Flying curlews may also resemble bar-tailed godwits (Limosa lapponica) in their winter plumages; however, the latter have a smaller body, a slightly upturned beak, and legs that do not reach far beyond their tail tips. The Eurasian curlew's feet are longer, forming a conspicuous "point".
The curlew exists as a migratory species over most of its range, wintering in Africa, southern Europe and south Asia. Occasionally a vagrant individual reaches places far from its normal range, such as Nova Scotia [8] and the Marianas. [9] [10] It is present all year in the milder climates of Ireland and the United Kingdom and its adjacent European coasts.
Reclamation and drainage of marshy fields and moorland, and afforestation of the latter, have led to local decreases, while conversion of forest to grassland in some parts of Scandinavia has led to increases there. [11]
The Eurasian curlew is generally wary. It is highly gregarious outside the breeding season.
The nest is a bare scrape on taiga, meadow, and similar habitats. The clutch size of the curlew consists of 4 eggs which are laid in April or May and incubates them for about a month until they begin to hatch. It has been observed that curlews tend to nest close to common kestrel's nests, as they can offer protection from other predators, such as corvids, even though kestrels also predate curlew nests. [12]
The Eurasian curlew feeds by probing soft mud for small invertebrates, but will also pick small crabs and earthworms from the surface if the opportunity arises.
Eurasian curlews eggs are predated by foxes and predatory birds. [13] In addition sheep have been recorded by the BBC nature series Springwatch predating the eggs. [14] [15]
The Eurasian curlew was formerly listed as a species of Least Concern by the IUCN, owing to its expansive range and relatively large population. However, the population of the Eurasian curlew was noticed to be declining at a very rapid rate. Following the evaluation of its population trend, the classification was found to be outdated, and it was consequently promoted to Near Threatened status in 2008. Though it is a common bird, its numbers are noticeably declining, [1] particularly in the United Kingdom and Ireland, which have about a quarter of the global population. In the twenty years up to 2016, the population is estimated to have declined by more than 50% in England and Scotland, more than 80% in Wales, and more than 90% in Ireland. At the end of 2015 it was placed on the United Kingdom's red list of most endangered bird species. [16] The curlew is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies. [17]
Research by scientists at the British Trust for Ornithology suggests that curlew populations in the UK have been negatively affected in areas with high levels of arable farming and afforestation which have reduced its natural habitats of open grasslands. [18]
The northern lapwing, also known as the peewit or pewit, tuit or tewit, green plover, or pyewipe or just lapwing, is a bird in the lapwing subfamily. It is common through temperate Eurosiberia.
The northern shoveler, known simply in Britain as the shoveler, is a common and widespread duck. It breeds in northern areas of Europe and across the Palearctic and across most of North America, wintering in southern Europe, the Indian subcontinent, Southeast Asia, Central, the Caribbean, and northern South America. It is a rare vagrant to Australia. In North America, it breeds along the southern edge of Hudson Bay and west of this body of water, and as far south as the Great Lakes west to Colorado, Nevada, and Oregon.
The gadwall is a common and widespread dabbling duck in the family Anatidae.
The Eurasian wigeon or European wigeon, also known as the widgeon or the wigeon, is one of three species of wigeon in the dabbling duck genus Mareca. It is common and widespread within its Palearctic range.
The curlews are a group of nine species of birds in the genus Numenius, characterised by their long, slender, downcurved bills and mottled brown plumage. The English name is imitative of the Eurasian curlew's call, but may have been influenced by the Old French corliu, "messenger", from courir , "to run". It was first recorded in 1377 in Langland's Piers Plowman "Fissch to lyue in þe flode..Þe corlue by kynde of þe eyre". In Europe "curlew" usually refers to one species, the Eurasian curlew.
The common redshank or simply redshank is a Eurasian wader in the large family Scolopacidae.
The dunlin 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.
The green sandpiper is a small wader (shorebird) of the Old World.
The Eurasian or common whimbrel, also known as the white-rumped whimbrel in North America, is a wader in the large family Scolopacidae. It is one of the most widespread of the curlews, breeding across much of subarctic Asia and Europe as far south as Scotland. This species and the Hudsonian whimbrel have recently been split, although some taxonomic authorities still consider them to be conspecific.
The grey plover, known as the black-bellied plover in North America, is a large cosmopolitan plover breeding in Arctic regions. It is a long-distance migrant, with a nearly worldwide coastal distribution when not breeding.
The common sandpiper is a small Palearctic wader. This bird and its American sister species, the spotted sandpiper, make up the genus Actitis. They are parapatric and replace each other geographically; stray birds of either species may settle down with breeders of the other and hybridize. Hybridization has also been reported between the common sandpiper and the green sandpiper, a basal species of the closely related shank genus Tringa.
The black-tailed godwit is a large, long-legged, long-billed shorebird first described by Carl Linnaeus in 1758. It is a member of the godwit genus, Limosa. There are four subspecies, all with orange head, neck and chest in breeding plumage and dull grey-brown winter coloration, and distinctive black and white wingbar at all times.
The red-necked phalarope, also known as the northern phalarope and hyperborean phalarope, is a small wader. This phalarope breeds in the Arctic regions of North America and Eurasia. It is migratory, and, unusually for a wader, winters at sea on tropical oceans.
The red phalarope or grey phalarope is a small wader. This phalarope breeds in the Arctic regions of North America and Eurasia. It is migratory, and, unusually for a wader, migrates mainly on oceanic routes, wintering at sea on tropical oceans.
The pied avocet is a large black and white wader in the avocet and stilt family, Recurvirostridae. They breed in temperate Europe and across the Palearctic to Central Asia then on to the Russian Far East. It is a migratory species and most winter in Africa or southern Asia. Some remain to winter in the mildest parts of their range, for example in southern Spain and southern England. The pied avocet is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
The Eurasian stone-curlew, Eurasian thick-knee, or simply stone-curlew is a northern species of the Burhinidae (stone-curlew) bird family.
The slender-billed curlew is a bird in the wader family Scolopacidae. Isotope analysis suggests the majority of the former population bred in the Kazakh Steppe despite a record from the Siberian swamps, and was migratory, formerly wintering in shallow freshwater habitats around the Mediterranean. This species has occurred as a vagrant in western Europe, the Canary Islands, the Azores, Oman, Canada, and Japan. The slender-billed curlew was always a rare species and is feared extinct, with the last verifiable sighting being in 1995.
The bristle-thighed curlew is a medium-sized shorebird that breeds in Alaska and winters on tropical Pacific islands.
The Far Eastern curlew is a large shorebird most similar in appearance to the long-billed curlew, but slightly larger. It is mostly brown in color, differentiated from other curlews by its plain, unpatterned brown underwing. It is not only the largest curlew but probably the world's largest sandpiper, at 60–66 cm (24–26 in) in length and 110 cm (43 in) across the wings. The body is reportedly 565–1,150 g (1.246–2.535 lb), which may be equaled by the Eurasian curlew. The extremely long bill, at 12.8–20.1 cm (5.0–7.9 in) in length, rivals the bill size of the closely related long-billed curlew as the longest bill for a sandpiper.
The Hudsonian whimbrel is a wader in the large family Scolopacidae. It is one of the most widespread of the curlews, breeding across much of subarctic North America. This species and the Eurasian whimbrel have recently been split, based on genetic and noticeable morphological differences.