La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Siberian and Scandinavian Common Chiffchaffs in Britain and Ireland - a genetic study (2018)
Auteurs :	J. Martin Collinson, Auteur ; Amanda Murcia, Auteur ; Gustavo Ladeira, Auteur ; Kirsty Dewars, Auteur ; Florence Roberts, Auteur ; Thomas Shannon, Auteur
Type de document :	Article
Dans :	British Birds (111(7) JUL 2018)
Article en page(s) :	384-394
Langues:	Anglais
Résumé :	Three subspecies of Common Chiffchaff Phylloscopus collybita have occurred in Britain:Siberian Chiffchaff' P. c. tristis is now recognised as a scarce but regular migrant to western Europe, but the extralimital status of presumed Scandinavian individuals of P c. abietinus is uncertain. Identification issues and the problem of abietinus x tristis intergrades remain. This paper summarises the results of genetic analyses of 149 migrant and wintering Chiffchaffs in Britain & Ireland during 2009-17. Genetically confirmed Siberian Chiffchaffs were found to be primarily late-autumn migrants, with a number of overwintering birds and a small peak of early spring migrants. Most Siberian Chiffchaffs in Britain & Ireland are males. In our sample, abietinus was much less frequent than tristis; this subspecies is probably overlooked, with records in late autumn, winter and a few in the late spring.

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