Each row marks a day, stretching from midnight to midnight. The birds begin early. Each morning, they sing. As the days grow shorter, their songs come later, and you can see that shift, little by little, to the right.
Press play under the picture and you will hear them, along with the chorus howl of a Yellowstone wolf pack, a voice rising from the land itself.
To those who know how to read it, a spectrogram is a kind of writing, one that tells who spoke, who sang and who called out in the dark.
From data to art
Recorded in Yellowstone National Park, where the world is still more wild than tame, Jeffrey Reed has turned this recording into something more than data: he has made it into art. His prints bring these sounds to life, color and rhythm pressed into acrylic, a frozen moment of Yellowstone’s song.

Museum-quality special order
- 3’ x 4’ (portrait or landscape)
- Acrylic or brushed aluminum
- Floating frame (optional)
- From $2,900
To order, contact Jeff at jeff@grizzlysystems.io. Poster versions are also available from the Languages of Life collection on Zazzle.
Commission a soundscape
To commission a custom soundscape, contact Jeff at jeff@grizzlysystems.io. He will deploy a special GrizCam audio recorder at the location of your choice, capturing the living pulse of that place over the course of a month. From the raw field recordings he will craft a one-of-a-kind spectrogram, paired with high-fidelity audio that lets you see and hear the voice of the land.
All proceeds go to the nonprofits Yellowstone Forever and Wild Livelihoods and their conservation efforts.