La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Factors affecting breeding and natal dispersal in the Great Reed Warbler (Acrocephalus arundinaceus)
Auteurs :	Vladimir A. Fedorov, Auteur
Type de document :	Article
Dans :	Vogelwarte (40(4) Dezember, 2000)
Article en page(s) :	279-285
Langues:	Allemand
Résumé :	Breeding and natal dispersal of the Great Reed Warbler (Acrocephalus arundinaceus) were studied in the southern part of the Pskov Region and on the Courish Spit on the coast of the Baltic Sea. As with many other species, adults are more likely to return to their breeding sites after successful reproduction than after breeding failure. As a rule, after several (usually two) unsuccessful breeding-attempts, adults will desert the nesting area. The following year, such birds did not return to the initial breeding site but chose instead the place to which they subsequently migrated. In young birds, a relationship has been noted between dispersal and what previously has happened to them as nestlings. It seems that the tendency to disperse is affected, at least partially, by hardships (e.g. poor feeding conditions) suffered prior to fledging.

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