La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Do Egyptian Geese Alopochen aegyptiacus migrate? (1999)
Auteurs :	Rob Lensink, Auteur
Type de document :	Article
Dans :	Limosa (72(4) 1999)
Article en page(s) :	160-162
Résumé :	During standardized counts of migrating birds at an observation site near Arnhem, in the eastern part of the Netherlands, all movements of Egyptian Goose were recorded. In autumn 1981-98, 1850 counts were made in the early morning, between July and December. After the first observation in 1988, the number of birds gradually increased till 1994 (Fig. 1), in line with the colonization of the breeding areas nearby and the increase in the number of breeding pairs. Egyptian Geese were only seen between August and the first half of September and from the beginning of October onwards (Fig. 2). This pattern suggest movements after the finish of primary moult and the dispersion of breeding birds and their young till half September and later on movements induced by the decline of grass growth towards the winter period. No specific migration direction could be recognized (Fig. 3). These arguments suggest that the observed movements are of local origin, implying the Egyptian Goose behaves as a resident bird species.

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