La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Breeding biology and ecology of Cattle Egret Bubulcus ibis in Kabylia (Algeria)
Auteurs :	M Boukhemza, Auteur ; N Boukhemza-Zemmouri, Auteur ; J.-F Voisin, Auteur
Type de document :	Article
Dans :	Alauda (74 janvier 1, 2006)
Article en page(s) :	331-337
Mots-clés :	Algérie
Résumé :	Cattle Egret has recently expanded its distribution range over most of the temperate and warm parts of the world, and bred for the first time in Kabylia in 1993, in the Sébaou Valley, where we monitored breeding success from 1993 to 1997 and on 2003. Breeding numbers increased rapidly until 2003. The high average brood size (2,61 ± 1,05 young/pair) may partially explain the good recruitment of breeders. It is also probably related to the improvement of environmental conditions. Various possible causes can be advanced to explain this geographical expansion. Modifications of behaviour or food diversification, particular values of the specific demographic parameters, all of which could explain the dynamic of the Cattle Egret in Kabylia.

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