JAMES FISHER, M.A.
JOHN GILMOUR, M.A.
JULIAN HUXLEY, M.A., D.SC., F.R.S.
L. DUDLEY STAMP, C.B.E., B.A., D.SC.
ERIC HOSKING, F.R.P.S.
The aim of this series is to interest the general reader in the wild life of Britain by recapturing the inquiring spirit of the old naturalists. The Editors believe that the natural pride of the British public in the native fauna and flora, to which must be added concern for their conservation, is best fostered by maintaining a high standard of accuracy combined with clarity of exposition in presenting the results of modern scientific research. The plants and animals are described in relation to their homes and habitats and are portrayed in the full beauty of their natural colours, by the latest methods of colour photography and reproduction.
THE Editors of the New Naturalist would wish for no other author of the first bird book in their main series than E. M. Nicholson.
During the present century ornithology has changed from a particular study by a coterie of scientists and privileged amateurs to a much wider subject, with a considerable public following. Nicholson was one of the first to recognise this change. His own interest in birds had developed early; he grew particularly interested in bird territory and ecology through the influence of H. Eliot Howard and others, and was the first British worker seriously to embark upon a proper classification of bird habitats, and an assessment of the populations of common land-birds. His interests have included, and still include, marine ornithology, the comparative and evolutionary study of bird songs and voices, the relation of birds to their habitatstheir autecology, the study of the numbers of birds and their changes: all these subjects were new when he first explored them, and particularly lend themselves to co-operative investigation by teams of collaborators.
In his earliest book, Birds in England (Chapman & Hall, 1926) Nicholson showed that he had come to realise that our knowledge of birds could be substantially increased by encouraging amateurs to join the ranks of the critical investigators. His second book, How Birds Live (Williams & Norgate, 1927) dealt purely with the habits of birds. In 1931, however, with The Art of Bird Watching (Witherby) he returned to the task of promoting co-operation, in order to solve purely ornithological problems. The next step was inevitable: when the British Trust for Ornithology was founded in 1933, he was its first Secretary, and a close association between organised amateur ornithology and the University of Oxford began, which soon resulted in the foundation of the Edward Grey Institute of Field Ornithology. During the rest of the thirties Nicholson devoted a great deal of his spare time to the Trust, though his contributions to published ornithology during this period included many scientific papers and two books on the Songs of Wild Birds (Witherby, 1936 and 1937) which show that his aesthetic approach to birds is as sensitive as his powers of scientific criticism.
The second world war failed to sever Nicholsons connection with active ornithology, though he had to watch his wrynecks at Potsdam, and make notes at Cairo and Quebec, and listen to jackdaws in Downing Street. For Nicholsons alter ego is Secretary to the Office of the Lord President of the Council. Not long ago he became Chairman of the British Trust for Ornithology, and once more active in the organisation that he has done so much to build; now he is Chairman of its Research Committee.
Nicholson must not be thought to be in any way a victim of the machine he has helped to create. He has always seen beyond the problems of organisation to the objects for which they were devised, the extension of ornithology into fresh fields. When the editors of this book asked him for his own concept of his aim of an ornithologist his reply contained no mention of organisation. It was as follows: To look at birds , to describe faithfully and to measure resourcefully and accurately, to speculate stimulatingly but tentatively, to set things in their historical and biological perspective, and to recognise that ornithology is the business and the joint contribution of all ornithologists, whoever and wherever they are.
We greet this new book; a book about the impact of man upon birds, and of birds upon manthe subject that has been close to his heart for many years, and on which he has been collecting multifarious notes. The result of his analysis and synthesis iswe know its readers will agreea most stimulating and original contribution, and a new milestone in the progress of British ornithology. We are sure readers will be particularly delighted at the note of optimism that pervades itthe suggestion that not all the works of man are fated to destroy nature, and that some are likely to improve the quantity and variety of our birds. It is clear that we have a most interesting half-century before us, from the ornithological point of view; and at the end of it this work will, we expect, be still widely read, and quarried for facts and conclusions, by the next generation of comparative ecologists and field naturalists.
THE EDITORS
WHEN the Editors invited me to write this book they offered me an opportunity to complete a picture of the impact of civilisation on our bird life for which I had drawn a first sketch in Birds In England over twenty years ago. Here was a chance to trace the shaping of our towns and countryside and the life-histories and ecology of their most characteristic birds. In taking this opportunity I soon found that far too little is yet known to allow anything approaching a complete picture to be drawn, although it is true that enough has been learnt recently to give us a much better idea of the subject. What I have done here, therefore, amounts to no more than a fuller and more mature sketch from a new angle, emphasising salient features and a certain amount of detail, and bringing out some of the gaps remaining to be filled in our knowledge of the facts and of underlying forces. I have not hesitated to look forward as well as back, since nothing is more misleading than to accept the assumption that the particular pattern of bird life which we see in any given place at any given time is in any way more normal or enduring than the different patterns which have just preceded and will soon follow it. For a similar reason I have tried to describe bird life in Britain against the background of the distribution and habits of the same birds in other lands, not exhaustively but as a reminder that the birds we see here also live in other countries, sometimes on different terms. To begin to understand, say, a wren, we need to take not only a wrens-eye view of the nearest heap of brushwood but a broader sweep of vision over the thin brown line of wrens which girdles the northern world from Iceland and Ireland through Europe, Siberia and North America to the Gulf of St. Lawrence.
This book is concerned with the normal habits and characteristics of a selected group of birds, and with variations and exceptions in habits which throw light on the normal. The fullness or brevity of treatment or the omission of reference to a species is determined by the degree to which it has become dependent on men in the British Isles and has come to rely largely upon types of habitat greatly modified or actually formed by human action. In the description of species attention has similarly been concentrated on those aspects which throw most light on their capacity to adapt themselves to or to exploit civilisation. A large number of references to aberrations and isolated occurrences have been omitted to avoid cluttering up the text with detail or with relatively unimportant qualifications to statements which apply in at least ninety-nine cases out of a hundred. Where such occasional variations are unmentioned it is because they have not been considered of sufficient importance, but no doubt others would sometimes select differently, while occurrences which now seem exceptional or erratic may be shown to be more usual by fuller observation, or may represent the first appearance of new habits which will later become widespread, such as paper-tearing by tits.