Table Of Content

Bird Study The Journal of the British Trust for Ornithology Edited by W.J. Peach Volume 40 1993 Published by Blackwell Scientific Publications Ltd Published for the British Trust for Ornithology by © 1993 British Trust for Ornithology. Authorization Blackwell Scientific Publications to photocopy items for internal or personal use, or Osney Mead, Oxford OX2 0EL the internal or personal use of specific clients, is 25 John Street, London WC1IN 2BL granted by the British Trust for Ornithology for 23 Ainslie Place, Edinburgh EH3 6AJ libraries and other users registered with the Copy- Suite 500, 5" Floor, 238 Main Street, Boston right Clearance Center (CCC) Transactional Report- Massachusetts 02142, USA ing Service, provided that the base fee of $10.00 per 54 University Street, Carlton, Victoria 3053, copy is paid directly to CCC, 27 Congress Street, Australia Salem, MA 01970, USA. Special requests should be Arnette SA, 1 rue de Lille 75006 Paris, France addressed to the Editor. 0006-3657/93 $10.00. Blackwell Wissenschaft-Verlag GmbH, Dusseldorferstrasse 38, D-10707 Berlin, Germany Blackwell MZV, Feldgasse, A-1238 Wein, Austria Printed in Great Britain by Henry Ling Ltd, at the Dorset Press, Dorchester, Dorset. Contents Volume 40 - Part 1 - March 1993 Status of the Hen Harrier Circus cyaneus in Scotland in 1988-89. C.J. Bibby and B. Etheridge Clustering of territories in the Wood Warbler Phylloscopus sibilatrix. M. Herremans Population changes and territorial distribution of Common Buzzards Buteo buteo in the Central Highlands, Scotland. D.J. Halley Polygyny in Spanish Pied Flycatchers Ficedula hypoleuca. J. Potti and S. Montalvo Spatial dynamics of wintering Lapwings and Golden Plovers in Britain and Ireland, 1981/82 to 1983/84. J.S. Kirby and P.C. Lack Techniques for radio-tagging pheasant chicks. R.E. Kenward, P.A. Robertson, A.S. Coates, V. Martstrém and M. Karlbom Magpie Pica pica predation on Blackbird Turdus merula nests in urban areas D.W. Groom Nest sites in the Kestral Falco tinnunculus. M. Shrubb The foods and feeding rates of Montagu’s Harriers Circus pygargus breeding in arable farmland. J.C. Underhill-Day Contents Volume 40 - Part 2 - July 1993 The effect of migration and scale on the study of bird populations: 1991 Witherby Lecture. J.D. Goss-Custard Further studies of the organochlorine content of Dipper Cinclus cinclus eggs: local differences between Welsh catchments. S.J. Ormerod and S.J. Tyler Breeding biology of the Little Grebe Tachybaptus ruficollis in Britain and Ireland D. Moss and G.M. Moss Nest-site selection and breeding success in the Lesser Kestrel Falco naumanni J.J. Negro and F. Hiraldo Birds in European gardens in the winter and spring of 1988-89 P.S. Thompson, J.J.D. Greenwood and K. Greenaway The diet of Shags Phalacrocorax aristotelis during the chick-rearing period assessed by three methods. M.P. Harris and S. Wanless The effects of aero-generators on moorland bird populations in the Orkney Islands, Scotland. E.R. Meek, J.B. Ribbands, W.G. Christer, P.R. Davy and I. Higginson Reconstructing diet composition on the basis of faeces in a mollusc-eating wader, the Knot Calidris canutus. A. Dekinga and T. Piersma Reviews Contents Volume 40 - Part 3 - November 1993 Numbers and distribution of Dotterel Charadrius morinellus breeding in Great Britain. H. Galbraith, S. Murray, S. Rae, D.P. Whitfield and D.B.A. Thompson Distribution and status of wintering Shovelers Anas clypeata in Great Britain. J.S. Kirby and C. Mitchell Post-fledging dependence period and development of flight and hunting behaviour in the Red Kite Milvus milvus. J]. Bustamente A method for censusing upland breeding waders. A.F. Brown and K.B. Shepherd The status of Golden Plover Pluvialis apricaria in the south Pennines. A.F. Brown Shags Phalacrocorax aristotelis at cage fish farms in Argyll, Western Scotland. D.N. Carss Diurnal and nocturnal prey detection by Dunlins Calidris alpina. K.N. Mouritsen Diet of the Red-billed Chough Pyrrhocorax pyrrhocorax in south-east Spain. J.J. Soler and M. Soler Nest predation and numbers of Golden Plovers Pluvialis apricaria and other moorland waders. R. Parr Does the risk of nest predation affect clutch size in the Jackdaw Corvus monedula? M. Soler and J.J. Soler