“…In particular, migrating songbirds make journeys of thousands of miles, and often return to the same breeding and wintering grounds year after year (Newton, 2007), but the question of how they achieve this remarkable feat remains open to debate (Berthold, 2001;Wiltschko and Wiltschko, 2003;Wallraff, 2005). It has been demonstrated that some juvenile songbirds have an inherited species specific compass direction to reach their wintering grounds on their first journey (Berthold, 1991). However, this may result in a failure to reach their normal winter range if they are displaced large distances (Perdek, 1958).…”