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¢£Drones provide birdsong researchers with flying ears
http://newatlas.com/drones-birdsongs/48010/?utm_source=rss&utm_medium=rss
¢£Drones are now being used to study bird songs
http://www.theverge.com/2017/2/20/14668048/drones-songbirds-science-research-audio-bird-recordings?utm_source=rss&utm_medium=rss