NATURE IN WALES The Quarterly Journal of the West Wales Field Society Editors R. M. LOCKLEY. P. M. MILES. W. S. PEACH. Editorial Address :-Nature in Wales, Orielton, Pembroke. CONTENTS OF VOL. 2. NUMBER 4. WINTER, 1956 Page THE BIRDS OF Caldey. Bryan Sage 333 THE BALANCE OF NATURE ON THE FARM. I. Thomas 341 THE WILDFOWLER NATURALIST. A. Cadman 348 Lepidoptera. NOTED NEAR TENBY, PEMBROKESHIRE Dr. A. M. R. Heron 350 NOTES ON SOME COLEOPTERA FROM CADER IDRIS. Bryan Sage 352 FIELD NOTES Botanical 353 Insects 357 Birds 359 Mammals 361 SCIENTIFIC LITERATURE 361 BOOK REVIEWS 361 LIBRARY 364 SOCIETY'S NOTES 364 LETTERS 367 The Editors and their Scientific Advisers endeavour to main- tain a high standard of accuracy but do not accept responsibility for the statements and opinions of the contributors to this Journal. Issued free to all Members of the West Wales Field Society. On sale price, 2s. 6d.