La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Population size and breeding success of Icelandic Whooper Swans Cygnus cygnus: results of the 2010 international census
Auteurs :	Colette Hall, Auteur ; Jacqueline R. Glanville, Auteur ; Helen Boland, Auteur ; Olafur Einarsson, Auteur ; Graham Mcelwaine, Auteur ; Chas A. Holt, Auteur ; Christopher J. Spray, Auteur ; Eileen C. Rees, Auteur
Type de document :	Article
Dans :	Wildfowl (62 2012)
Article en page(s) :	73-96
Langues:	Anglais
Résumé :	Trends in total population size and mid-winter distribution have been determined for the Icelandic Whooper Swan population through coordinated international censuses, undertaken in January across its wintering range in Britain, Ireland and Iceland, at c. 5-yearly intervals from 1986 onwards. A total of 29,232 swans recorded during the sixth international census in January 2010 represented an increase of 11% on the previous census in 2005 and is the highest census total to date. Overall, 35.8% of the population (10,452 swans) was recorded in the Republic of Ireland, 30.8% (8,999) in England, 15.8% (4,616) in Northern Ireland, 9.1% (2,659) in Scotland and 7.8% (2,278) in Iceland, with the combined total in Wales and the Isle of Man accounting for

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