... I the treetops. that is. where the vocalists are birds, not human beings. Why do birds sing? Do they need to learn their songs.? And how does the song of a wren. for example, sound to the wren next door?
Jeffery Boswall tries to answer these questions and illustrates his replies with his personal ' top 20 '- the 20 most musical of our British bird songsters. Producer DILYS BREESE
BBC Bristol