La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Nest productivity of Woodlarks: a case study on the Thames Basin Heaths
Auteurs :	John Eyre, Auteur ; Jim Baldwin, Auteur
Type de document :	Article
Dans :	British Birds (107(2) FEB 2014)
Article en page(s) :	92-102
Résumé :	The factors affecting the nest productivity of Woodlarks Lullula arborea breeding in the Thames Basin Heaths were investigated over four breeding seasons, 2009-12. Woodlark nests were located and the outcome of each breeding attempt monitored, in some cases using nest cameras to identify the cause of nest failures. Results are summarised for 148 nests. Predation, particularly by Red Foxes Vulpes vulpes, and poor weather were found to be major reasons for nest failure. A particular aim of the study was to determine the impact of grazing on nest productivity but, at the stocking densities experienced, the direct impact of cattle was found to be negligible. Information on recruitment of locally bred birds into the breeding population is also presented.

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