Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The planet’s birds make a lot of different sounds communicating a ...

I was sitting in solitude earlier this summer in an Adirondack chair in my backyard, when I realized I wasn’t as alone as I’d thought. Thanks to the app I’d just downloaded on my phone — the popular ...

Part 1. 'I don't do calls' -- Crossing the sound barrier -- Tone and timpre -- Pitch and frequency -- Rhythm and timing -- Part 2. Put it all together and what have you got? -- Simple calls -- Simple ...