Genetic predispositions guide population-specific song learning in wild birds, shows new research from Stockholm University. By studying adult pied flycatchers that had been translocated as eggs from the Netherlands to Sweden, the researchers found that the songs of translocated birds resembled both their social environment in Sweden as well as their ancestral Dutch population. These results show how genetic differences can impact cultural change in birdsong and how they can together, contribute to mating barriers between bird populations.