title: Evolution of the breeding range of the Black-headed Yellow Wagtail (Motacilla flava feldegg)
abstract: The Black-headed Yellow Wagtail (&lt;em&gt;Motacilla flava feldegg&lt;/em&gt;) has shown a clear tendency to expand its breeding range in the period 1830-2015, with an accentuation of the phenomenon during the second half of the twentieth century. Expansion northwards has been favoured by climate change and is characterized by alternating phases of jump dispersal and subsequent diffusion within the limits thus achieved. In the Balkans and in western Europe, jump dispersal occurred mainly in the 
journal: Rivista Italiana di Ornitologia