How different are willow warblers?
Willow Warblers (Phylloscopus trochilus) have been extensively studied in Europe, however the species breeds across entire Eurasia and knowledge of far eastern populations up til now has been based almost exclusively on museum skins. In this study we visited far NE Russia (Chaun river delta) and collected the precious information on willow warblers of the subspecies yakutensis from the other end of Eurasia. In this study we put collected phenotypic (morphometrics, colouration), genetic and stable isotope data in context of what is known of the different European subspecies of willow warblers. In this new study we discuss phylogeography and population history of willow warblers, as well as pros and cons when using subspecies as a taxa.
To the paper "Phenotypic and genetic characterization of the East Siberian Willow Warbler (Phylloscopus trochilus yakutensis Ticehurst, 1935) in relation to the European subspecies" in Journal of Ornithology.