La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Birds from the Far East in Central Europe: some side-notes to Pfeifer et al. (2007)
Auteurs :	Roman B. Holynski, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (150(1) JAN 2009)
Article en page(s) :	307-309
Langues:	Anglais
Résumé :	The "reverse migration hypothesis'' as the explanation for the vagrancy of Far Eastern birds in Europe is commented on. It is concluded that, as the postulated switch of 180 degrees along a great circle line would lead the eastern or even central Siberian birds to North America rather than to Europe, the application of the "reverse migration hypothesis'' to them seems untenable (which, however, does not preclude its plausibility in case of transatlantic, southern European, or even southwestern Siberian vagrants). On the other hand, patterns of appearance of the Turdus [naumanni] superspecies (Machalska et al. 1967) suggest the relationship of the phenomenon of vagrancy to post-breeding nomadic movements and/or periodical invasions of non-migrating species.

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