People Singing As Birds, Sort Of

Check THIS out. 

This guy, Marcus Coates, recorded birds singing.  Then he slowed the recording down enough for humans to imitate it.

Then, he videotaped the humans imitating the slowed-down birds, and sped it back up to bird speed.  

Here's how they did it.

Hat tip to listener Scott in Garberville for turning us on to it.