Musician Benn Jordan teaches a rescued European starling named ‘the Mouth’ to reproduce a spectral synthesizer drawing, demonstrating songbirds can function as biological data storage devices. Jordan’s ultrasonic recordings reveal the Mouth replicated the sound-image with striking accuracy, storing 176 KB of information. Going down an avian acoustics rabbit hole, he shows how DIY recording setups can unlock the “hidden and extremely weird world” of bird communication.