What he did is he drew a simple sketch (a drawing of a bird) in an audio spectrogram, played the resulting sound to a (very talented) bird, which replayed the sound to him, and the spectrogram of the bird sound really looked quite similar to the original sketch.
While super interesting, not quite storing data in a bird in a way I hoped when reading the title.
Not exactly.
What he did is he drew a simple sketch (a drawing of a bird) in an audio spectrogram, played the resulting sound to a (very talented) bird, which replayed the sound to him, and the spectrogram of the bird sound really looked quite similar to the original sketch.
While super interesting, not quite storing data in a bird in a way I hoped when reading the title.