Identifying Migratory Birds by Sound in Britain and EuropeIdentifying Migratory Birds by Sound in Britain and Europe makes identifying migrants at dusk or at night a reality. This book provides detailed text on flight and contact calls, along with annotated sonograms and QR codes to access the calls themselves. Every spring and autumn, millions of birds fly over us en route to their summer or winter quarters, often engaged in migratory flights during the night. A profusion of sounds fills the air, allowing