Saving an image to a bird
https://www.tomshardware.com/pc-components/storage/yes-you-can-store-data-on-a-bird-enthusiast-converts-png-to-bird-shaped-waveform-teaches-young-starling-to-recall-file-at-up-to-2mb-s
They converted an image to a waveform, played it to a young starling who imitated it well enough that it could be recorded and the waveform converted back to an image.
The linked video is full of info about bioacoustic monitoring too
Yes, you can store data on a bird — enthusiast converts PNG to bird-shaped waveform, teaches young starling to recall file at up to 2MB/s
Who needs Starlink when you've got an actual starling
Sarah Dal
Dr.Implausible