La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Monitoring of the only colony of breeding Great Cormorant Phalacrocorax carbo in the Meuse valley in Wallonia
Auteurs :	Francis Pourignaux, Auteur ; Jean-Pierre Reginster, Auteur ; Jean-Yves Paquet, Auteur
Type de document :	Article
Dans :	Aves (47(2) JUN 2010)
Article en page(s) :	91-96
Résumé :	A small breeding colony of Great Cormorant Phalacrocorax carbo, located at Jambes on an island in the river Meuse, at the margin of main range of the species in Europe, is carefully surveyed every year for the number of occupied nests and production of young. The breeding success is very high (always higher than two fledged young per occupied nest) in comparison with large colonies in the core breeding area. Apparently, this high production level leads to neither a subsequent large increase of the number of nests in the colony, nor to satellite colony creation, since the Jambes colony is still the only one in the Meuse valley in Wallonia. Early breeders in the season are consistently producing more fledglings than later breeders.

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