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Description of  Identifying Migratory Birds by Sound in Britain and Europe (Helm Identification Guides)

1399410067 pdf 1399410067 pdf Identify migrants at dusk or at night with this book, containing detailed text on flight and contact calls, annotated sonograms and QR codes to the calls themselves. Every spring and autumn, millions of birds fly over us to en route to their summer or winter quarters, with these migratory flights often being at night. A profusion of sounds fills the air, making it possible to put a name to these fleeting silhouettes - because the best way to identify these migrants is by sound. Often neglected in traditional identification guides, these calls are described in this book with precision. Annotated sonograms make it possible to visualise, identify and better memorise the flight and contact calls of all European migratory species. * 450 species described, with detailed text, photographs and sonograms. * Features essential criteria for effective identification of calls in the field. * Covers migratory behaviour and where and when to encounter each species. * Contains QR codes linking to more than 1,000 downloadable sounds to listen to at home or on your smartphone. Read more