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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Ordo: Charadriiformes
Subordo: Charadrii

Familia: Recurvirostridae
Genus: Recurvirostra
Species: R. americana - R. andina - R. avosetta - R. novaehollandiae

Name

Recurvirostra Linnaeus, 1758
Gender: feminine
Type species: Recurvirostra avosetta Linnaeus, 1758
Fixation: monotypy

References

Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio Decima, Reformata. Tomus I. Holmiæ (Stockholm): impensis direct. Laurentii Salvii. 824 pp. DOI: 10.5962/bhl.title.542 BHL p. 151 BHL Reference page.

Vernacular names
English: Avocet
español: Avoceta
suomi: Avosetit
français: Avocette
Türkçe: Kılıçgaga

The four species of avocets /ˈævəsɛt/ are a genus, Recurvirostra, of waders in the same avian family as the stilts. The genus name comes from Latin recurvus, 'curved backwards' and rostrum, 'bill'.[1] The common name is thought to derive from the Italian (Ferrarese) word avosetta. Francis Willughby in 1678 noted it as the "Avosetta of the Italians".[2]
Biology

Avocets have long legs and they sweep their long, thin, upcurved bills from side to side when feeding in the brackish or saline wetlands they prefer. Their plumage is pied, sometimes also with some red.

Members of this genus have webbed feet and readily swim. Their diet consists of aquatic insects and other small creatures.

They nest on the ground in loose colonies. In estuarine settings, they may feed on exposed bay muds or mudflats.

The pied avocet is the emblem of the Royal Society for the Protection of Birds.
Taxonomy

The genus Recurvirostra was introduced in 1758 by Swedish naturalist Carl Linnaeus in the 10th edition of his Systema Naturae to contain a single species, the pied avocet, Recurvirostra avosetta.[3] The genus name combines the Latin recurvus meaning 'bent' or 'curved backwards' with rostrum meaning 'bill'.[4]
Species

The genus contains four species.[5]
Image Name Common name Distribution
American avocet (26124753051).jpg Recurvirostra americana American avocet Central/Western United States, South Florida, Mexico, Saskatchewan, and Alberta
Recurvirostra andina.jpg Recurvirostra andina Andean avocet Argentina, western Bolivia, northern Chile, and southern Peru
Pied Avocet Recurvirostra avosetta by Dr. Raju Kasambe DSCN3743 (8).jpg Recurvirostra avosetta Pied avocet Temperate Europe and Western and Central Asia
Recurvirostra novaehollandiae - Lake Joondalup.jpg Recurvirostra novaehollandiae Red-necked avocet Australia

One fossil species, R. sanctaneboulae Mourer-Chauviré, 1978, dates from the late Eocene of France.
Range and habitat

In a large colony, they are aggressively defensive and chase off any other species of birds that try to nest among or near them. That causes the annoyed remark "Avocet: Exocet" from some British birdwatchers.[6]

They had been extirpated in Britain for a long time because of land reclamation of their habitat and persecution by skin and egg collectors, but during or soon after World War II, they started breeding on reclaimed land near the Wash, which was returned to salt marsh to make difficulties for any landing German invaders. Avocets use Titchfield Haven National Nature Reserve as a summer breeding ground.[7]
References

Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 266. ISBN 978-1-4081-2501-4.
Swann, H. Kirke (1913). A dictionary of English and folk-names of British Birds. London: Witherby and Co. p. 9.
Linnaeus, Carl (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1 (10th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 151.
Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 331. ISBN 978-1-4081-2501-4.
Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2021). "Buttonquail, thick-knees, sheathbills, plovers, oystercatchers, stilts, painted-snipes, jacanas, Plains-wanderer, seedsnipes". IOC World Bird List Version 11.2. International Ornithologists' Union. Retrieved 17 August 2021.
BBC TV 1 program The One Show, 7–7:30 p.m. 16 January 2008
"Cottage Hide". Hampshire County Council. Retrieved 3 June 2019.

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