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Northward migration of Afro-Siberian Knots Calidris canutus canutus : high variability in Red Knot numbers visiting staging sites on the French Atlantic coast, 1979–2009

Leyrer, Jutta, Bocher, Pierrick, Robin, Frédérick, Delaporte, Phillipe, Goulvent, Cyril, Joyeux, Emmanuel, Meunier, Francis and Piersma, Theunis 2009, Northward migration of Afro-Siberian Knots Calidris canutus canutus : high variability in Red Knot numbers visiting staging sites on the French Atlantic coast, 1979–2009, Wader study group bulletin, vol. 116, no. 3, pp. 145-151.

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Title Northward migration of Afro-Siberian Knots Calidris canutus canutus : high variability in Red Knot numbers visiting staging sites on the French Atlantic coast, 1979–2009
Author(s) Leyrer, Jutta
Bocher, Pierrick
Robin, Frédérick
Delaporte, Phillipe
Goulvent, Cyril
Joyeux, Emmanuel
Meunier, Francis
Piersma, Theunis
Journal name Wader study group bulletin
Volume number 116
Issue number 3
Start page 145
End page 151
Publisher International Wader Study Group
Place of publication Norfolk, England
Publication date 2009-12
ISSN 0260-3799
Keyword(s) Red Knot
France
stopover
migration
Calidris canutus canutus
Summary The Afro–Siberian Red Knot subspecies, Calidris canutus canutus, winters mainly on Banc d’Arguin, Mauritania, West Africa. An International Wader Study Group project carried out in 1979 suggested that during northward migration Red Knots cover their migration between the wintering grounds and the Siberian breeding grounds in two long-distance non-stop flights, stopping only in the Wadden Sea in Schleswig-Holstein, Germany. Each year Red Knots also visit staging sites along the French Atlantic coast in addition to the German Wadden Sea. Ever since 1979, the French staging sites have been counted on a regular basis and here we present the count data from these 30 years. In some years more than 20% of the population used the French Atlantic coast as a staging site, but numbers are highly variable from one year to the next. We suggest that high numbers in France might occur when birds have to stop short of the Wadden Sea because of head-winds and/or a lack of tail-winds en route from West Africa.
Language eng
Field of Research 060201 Behavioural Ecology
Socio Economic Objective 960802 Coastal and Estuarine Flora, Fauna and Biodiversity
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Victorian Wader Study Group
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039235

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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