Birdsong: Declining bird populations making Europe and North America quieter

The natural soundscape of birdsong has probably become quieter in Europe and North America over the past 25 years because of a decline in bird numbers

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United States ,United Kingdom ,America ,Simon Butler ,David Tipling Photo Library Alamy ,Nature Communications ,University Of East Anglia In Norwich ,North America ,East Anglia ,Bird ,Birdsong ,Soundscape ,Nature ,Climate Change ,Pollution ,Urbanisation ,