What does the Pacific Wren hear in a song? It's a long story. What we hear as a blur of sound, the bird hears as a precise sequence of sounds, the visual equivalent of seeing a movie as a series of still pictures. That birds can hear the fine structure of song so acutely allows them to convey much information in a short sound. Pacific Wrens are found most often in closed-canopy conifer forests, nesting in cavities, usually within six feet of the ground.

More info and transcript at BirdNote.org. 

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