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Pied avocet

From Wikipedia, the free encyclopedia
Species of bird
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Pied avocet
Calls recorded inSuffolk, England
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Charadriiformes
Family:Recurvirostridae
Genus:Recurvirostra
Species:
R. avosetta
Binomial name
Recurvirostra avosetta
Range ofR. avosetta
  Breeding
  Resident
  Non-breeding

Thepied avocet (Recurvirostra avosetta) is a large black and whitewader in theavocet andstilt family,Recurvirostridae. They breed in temperate Europe and across thePalearctic toCentral Asia then on to theRussian Far East. It is amigratory 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 theAgreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.

Taxonomy

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The pied avocet was one of the manybird species originally described byCarl Linnaeus in his landmark 175810th edition ofSystema Naturae, where it was given the binomial name ofRecurvirostra avosetta.[2] This species gets its English andscientific names from theVenetian wordavosetta. It appeared first inUlisse Aldrovandi'sOrnithologia (1603).[3] While the name may refer to black and white outfits once worn by European advocates or lawyers, the actualetymology is uncertain.[3] Othercommon names includeblack-capped avocet,Eurasian avocet or justavocet.[4]

It is one of four species ofavocet that make up the genusRecurvirostra.[5] The genus name is fromLatinrecurvus, "curved backwards" androstrum, "bill".[6] A 2004 study combining genetics and morphology showed that it was the most divergent species in the genus.[7]

Description

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A chick near Oosterend,Texel island, the Netherlands
landing inNorfolk, England

The pied avocet is a striking white wader with bold black markings. Adults have whiteplumage except for a black cap and black patches in the wings and on the back. They have long, upturnedbills and long, bluish legs. It is approximately 16.5–17.75 in (41.9–45.1 cm) in length of which the bill is approximately 2.95–3.35 in (7.5–8.5 cm) and the legs are approximately 3–4 in (7.6–10.2 cm). Its wingspan is approximately 30–31.5 in (76–80 cm).[8] Males and females look alike. The juvenile resembles the adult but with more greyish and sepia tones.

The call of the avocet is a far-carrying, liquid, melodiouskluit kluit.[8]

Behaviour

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These birds forage in shallow brackish water or on mud flats, often scything their bills from side to side in water (a feeding technique that is unique to the avocets[9]). They mainly eatcrustaceans andinsects.

Theirbreedinghabitat is shallow lakes with brackish water and exposed bare mud. They nest on open ground, often in small groups, sometimes with other waders. Three to fiveeggs are laid in a lined scrape or on a mound of vegetation.

In Britain

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The pied avocet wasextirpated as a breeding species in Great Britain by 1840.[10] Its successful recolonisation atMinsmere,Suffolk, in 1947 led to its adoption as the logo of theRoyal Society for the Protection of Birds.[8] The pied avocet has spread inland and northwards and westwards in Britain since then and it has bred inWales[11] and inScotland in 2018 atSkinflats.[12] Avocets have been sighted wintering at Browhouses, Dumfries and Galloway.

Gallery

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  • Adult feeding
    Adult feeding
  • Adult in flight
    Adult in flight
  • Avocet egg
    Avocet egg
  • ID composite
    ID composite
  • Video showing bird seeking food
  • Pied avocets in Little Runn of Kutch, India
    Pied avocets in Little Runn of Kutch, India
  • Unlike other waders, the pied avocet has webbed foot, and can swim well.
    Unlike otherwaders, the pied avocet haswebbed foot, and can swim well.

References

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  1. ^BirdLife International (2019)."Recurvirostra avosetta".IUCN Red List of Threatened Species.2019: e.T22693712A155534228.doi:10.2305/IUCN.UK.2019-3.RLTS.T22693712A155534228.en. Retrieved19 November 2021.
  2. ^Linnaeus, Carl (1758).Systema Naturae per Regna Tria Naturae, Secundum Classes, Ordines, Genera, Species, cum Characteribus, Differentiis, Synonymis, Locis (in Latin). Vol. I (10th revised ed.).Holmiae: (Laurentii Salvii). p. 151 – via TheInternet Archive.
  3. ^abLockwood, W. B. (1993).The Oxford Dictionary of British Bird Names.Oxford University Press.ISBN 978-0-19-866196-2.
  4. ^"Recurvirostra avosetta".Avibase.
  5. ^Sibley, Charles Gald; Monroe, Burt Leavelle (1990).Distribution and Taxonomy of Birds of the World. Yale University Press. p. 246.ISBN 0300049692.
  6. ^Jobling, James A. (2010).The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 266.ISBN 978-1-4081-2501-4.
  7. ^Thomas, Gavin H.; Wills, Matthew A.; Székely, Tamás (2004)."A supertree approach to shorebird phylogeny".BMC Evolutionary Biology.4: 28.doi:10.1186/1471-2148-4-28.PMC 515296.PMID 15329156.Supplementary Material
  8. ^abcThe Birds of the Western Palearctic (Abridged ed.).Oxford University Press. 1997.ISBN 0-19-854099-X.
  9. ^Moreira, Francisco (1995)."The winter feeding ecology of AvocetsRecurvirostra avosetta on intertidal areas. I. Feeding strategies".Ibis.137 (1):92–98.doi:10.1111/j.1474-919x.1995.tb03224.x. Archived fromthe original on 2013-01-05.
  10. ^"Birds return after 200 year gap".BBC. 15 June 2008. Retrieved11 November 2015.
  11. ^"Newport Wetlands National Nature Reserve". Natural Resources Wales. Retrieved21 July 2018.
  12. ^"RSPB's emblem bird, the avocet, breeds at RSPB Skinflats for the first time".Royal Society for the Protection of Birds. Retrieved21 July 2018.

External links

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Wikimedia Commons has media related toRecurvirostra avosetta.
Wikispecies has information related toRecurvirostra avosetta.
Recurvirostra avosetta
Authority control databases: NationalEdit this at Wikidata
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