La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Temporal variability of spring migration of Common Crane Grus grus
Auteurs :	Harald Weingaertner, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (120(5-6) 1999)
Article en page(s) :	331-335
Résumé :	Trier area is located in the middle of the southwesterly migration flyway of Common Crane in Europe. Numerous periodical observations of spring migration in the Trier area from 1988 to 1998 are used as a sample test to analyse population increase and temporal variation in timing of migration. During the eleven-year period, a strong population increase was observed which is statistically significant. A marked advance in the timing of spring migration is also statistically significant. During the last decade the median date of spring migration advanced by nearly two weeks.

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