La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Dartford Warblers on the Thames Basin and Wealden Heaths
Auteurs :	John M. Clark, Auteur ; John Eyre, Auteur
Type de document :	Article
Dans :	British Birds (105(6) JUN 2012)
Article en page(s) :	308-317
Résumé :	The most recent full UK survey of Dartford Warblers Sylvia undata was carried out in 2006. At that time, the numbers located on the Thames Basin and Wealden Heaths Special Protection Areas (SPAs) represented over 25% of the national population. Taken together, these two SPAs held more Dartford Warblers than either of the traditional strongholds, the New Forest and the Dorset Heaths. Numbers on the Thames Basin and Wealden Heaths SPAs and some peripheral heathland areas have been monitored annually by experienced local observers since the region was recolonised following the severe winters of 1961/62 and 1962/63. The results of those surveys are reported here, including evidence of a dramatic population crash following the severe winters of 2008/09 and 2009/10. Factors affecting the populations over the period and prospects for the future are discussed.

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