La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Do migrant European chats and warblers use magnetic gradient navigation?
Auteurs :	Jorgen Rabol, Auteur
Type de document :	Article
Dans :	Dansk Ornitologisk Forenings Tidsskrift (108(4) 2014)
Article en page(s) :	232-250
Langues:	Anglais
Résumé :	Compass orientation in reference to the magnetic field is a well established behaviour in birds and other animals. On the other hand, the presence and significance of magnetic gradient navigation is more controversial though the time-trend is towards increasing confidence. In this study, 478 passerine migrants were funnel-tested on 29 nights with the purpose to elucidate the possibility of magnetic navigation following simulated displacements towards N and S. No indications of magnetic navigation were found. Furthermore, a thorough reconsideration on claimed cases of magnetic navigation in migrant birds, pigeons and other animals revealed no unambiguous evidence of magnetic navigation.

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