AN ANALYSIS OF THE WEIGHTS OF BIRDS TRAPPED ON SKOKHOLM 01 January 1975 Comments Main paper ... Read More
Photographic studies of some less familiar birds: Rock Thrush 01 January 1975 Comments Main paper ... Read More
On the movements and survival of Woodpigeons and Stock Doves 01 January 1975 Comments Main paper ... Read More
The status of the Lesser Black-backed Gull in Hertforshire 01 January 1975 Comments Main paper ... Read More