Four programmes for amateur observers
1: Songs
A blackbird's familiar musical phrases and a woodpecker's drumming are both ' songs. This programme considers the significance of song in a bird's life and illustrates some of these deceptively different sounds.
Presented by ERIC SIMMS , with KENNETH WILLIAMSON of the B.T.O. who describes how experienced observers use song to census bird populations
Broadcast in December 1968
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