The Bird Fancyer's Delight, a title first used in 1714 by Thomas Ward, is a collection of tunes intended to coax birds to sing music not natural to them, but within their vocal range.
Teaching birds to sing "lessons properly composed within the faculty and compass of each bird," was a popular and lucrative hobby in the eighteenth century. The instruments used were the bird-flageolet and the recorder and other small home-made pipes.Here is are a few examples of songs played on the recorder by Sarah Angliss. (Play button in top bar.)
Many thanks to MamaM who first introduced me to the subject.