La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Breeding Marsh Harriers in the United Kingdom, 1983-95
Auteurs :	John Underhill-Day, Auteur
Type de document :	Article
Dans :	British Birds (91(6) June, 1998)
Article en page(s) :	210-218
Résumé :	Marsh Harriers Circus aeruginosus became extinct as breeding birds in Britain in 1899. There were just three isolated nesting attempts (two successful) between then and recolonisation from 1927 onwards, and none outside Norfolk until 1945. From a peak of 15 nests in 1958, the population declined again, to a single pair in 1971, and the species seemed doomed yet again. A dramatic recovery occurred, however, and by the 1990s the population had outgrown routine annual monitoring. This paper analyses recent nesting habitat and breeding success and describes a national census in 1995 which revealed approximately 148 breeding males and 156 breeding females rearing 350 young.

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