La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Shrikes in the south of the Entre-Sambre-et-Meuse: Study on the recent evolution of the breeding birds and data on habitat and reproduction
Auteurs :	Jean-Louis Coppee, Auteur
Type de document :	Article
Dans :	Aves (36(1-2) Sept., 1999)
Article en page(s) :	31-52
Résumé :	This study took place between 1991 and 1997. In 1990 10 territories at least of Red-backed Shrikes were observed but none of Great Grey Shrikes. The Great Grey Shrikes population looses 50% every ten years, which means that within 30 years the regression reaches 80-90% (see Table 1). Important habitat changes are the principal causes, hunting, rough winters (mid-eighties), pesticides and lack of food are others. On the other hand the Red-backed Shrike surprisingly has increased in this area for the last ten years (see Table 5 and 6). This is mainly due to an extension and restoration of favourable habitats: meadows acquisition for new nature reserves and conversion of fields into spruce or broad-leaved trees plantations (afforestations) are some of the favourable factors.

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