Welsh Journals

HOWELLS. R.(1968). The Sounds Between. Llandysul: Gomerian Press. MACROBERTS. M. H. & MACROBERTS. B. R. (1970). The gulls of Walney Island. Nat. Hist. (J. Amer. Mus.) 79, 64-69. NELSON. J. B. (1966). Population dynamics of the Gannet (Sula bassana) at the Bass Rock, with comparative information for other Sulidae. J. Anim. Ecol. 35, 443-470. PARSLOW. J. L. F. (1967). Changes in status among breeding birds in Britain and Ireland. Brit. Birds 60, 177-202. Dept. of Genetics, Milton Road, Cowbridge. WELSH WILDLIFE IN TRUST, edited by Dr. W. S. Lacey and published by the North Wales Naturalists' Trust on behalf of the Naturalists' Trust in Wales. Copies available from booksellers or direct from The Executive Officer, North Wales Naturalists' Trust, Llys Gwynedd, Ffordd Gwynedd, Bangor at £ 1.50 (by post £ 1.65).