Others made them. Qwerty and I came up with the audio programming. It was a group effort.
They fly a little bit, sing, then listen. Beethoven birds move towards other Beethoven birds. Mozart towards Mozart, etc. If the music gets too loud, they move away from the other birds.
They have solar cells. It's night. Is this a test run?
Yes. Our birds are still experimental. If they do something that requires us to run screaming in terror again, this time they'll have limited range.