Cara J Posted November 27, 2015 Share Posted November 27, 2015 io9 The World War II Tool That Changed How We Listen To Birdsong io9 In past centuries, birdsong experts tried to distinguish mockingbirds from thrashers by keeping their ears peeled. These days, they're better served by eagle eyes. When studying birdsong, contemporary ornithologists use their vision as often as their ... Read more: http://news.google.com/news/url?sa=t&fd=R&ct2=us&usg=AFQjCNGGFCSaf-h2-yZqD78Y4gWAmHC8_A&clid=c3a7d30bb8a4878e06b80cf16b898331&ei=leBYVqGKB6jt8wHWnKnoBg&url=http://io9.com/the-world-war-ii-tool-that-changed-how-we-listen-to-bir-1744906040 Link to comment Share on other sites More sharing options...
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