La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Rare and colonial breeding birds in The Netherlands in 1996 (1999)
Auteurs :	Arend J. van Dijk, Auteur ; Arjan Boele, Auteur ; Dirk Zoetebier, Auteur ; Roel Meijer, Auteur
Type de document :	Article
Dans :	Limosa (72(1) 1999)
Article en page(s) :	23-36
Résumé :	This paper reviews the status of colonial and rare breeding bird species in The Netherlands in 1996. Full details are given in van Dijk et al. (1998). The 1995/96 winter was long and severe; it was the first severe winter since the mid 1980s and was characterised by prolonged periods of frost, interrupted by short periods of milder weather. Snowfall was rare. There was a striking regional difference in mean temperatures between the NE and SW of The Netherlands as frost-lines often cut across the country. Equally remarkable as the severity of the winter weather was the long period of drought preceding the 1996 breeding season. Between July 1995 and April 1996 record low precipitation figures were assessed. As a result of the severe winter weather, several breeding species suffered heavy losses. Grey Heron numbers decreased markedly (on a national level with 22%), especially in the eastern and northern part of the country. Kingfisher numbers fell with at least 75%, and the already ailingpopulation of Bittern suffered a disquieting 30% decrease. Grey Wagtail numbers decreased slightly in the northernmost parts of the Dutch breeding area, but remained stable in the core areas in the utmost

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