Programme edited and introduced by James Fisher
Bird-Song Philip Brown discusses the practice of rendering songs in a near-equivalent form of words and describes his recent research on the wood-pigeon's ' Tak' two coos, tak' two '
J. Ashton Freeman advances a theory that some flight calls are used by birds as a sort of radar
Eric Simms introduces the first broadcast of his recordings of the mealyredpoll
Bruce Campbell offers some advice on how to identify birds by the sounds they make
Produced by Desmond Hawkins