Sea-Birds
Sea-Birds introduces us to the sea-birds of the North Atlantic, an ocean in which about half the world sea-bird species have been seen at one time or another. This edition is exclusive to newnaturalists.comFew of the higher animals have successfully invaded the polar regions and the sea; but those that have - the whales, seals and sea-birds - have made a wonderful success of it. There are only about 250 true sea-birds in the world (there are over thirty times as many others); yet among this select 250 are some of the most numerous and well-adapted of living species, ranging from the magnificent albatrosses, with their powers of sail-planing, to the curious diving petrels; from the penguins to the auks; from the cormorants to the gulls and terns.The arctic tern makes the longest migratory journey of any known bird, travelling 20,000 miles between the two polar regions in the course of a year. Some sea-birds species probably spend the first seven or eight years of their lives without ever touching land; and one, the emperor penguin, never touches land in its life, for it incubates its egg on the Antarctic ice!This book introduces the reader to the sea-birds of the North Atlantic, an ocean in which about half the world sea-bird species have been seen at one time or another. Sea-birds are generally more cosmopolitan and widespread than most land birds; and it is no surprise to the ornithologist to find that the communities on the American and European sides of the Atlantic are very similar, most of their member-species being common to both.The authors of this book have spent most of their active lives in research on sea-birds, Lockley specialising in Life-histories, Fisher in distribution and numbers. Each has a long record of exploration of the remotest parts of the Atlantic coast and islands. Their felicitous collaboration brings home for the first time to the general bird-watcher and sea-going naturalist what enormous strides have been recently made in our knowledge of sea-birds. We now know the world population of several soecies, and can follow with accuracy the changes in the numbers of many.
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Collins New Naturalist Library
28
Sea-Birds
James Fisher and R. M. Lockler
JAMES FISHER M.A.
JOHN GILMOUR M.A.
JULIAN HUXLEY M.A. D.SC. F.R.S.
L. DUDLEY STAMP C.B.E. D.LIT. D.SC.
PHOTOGRAPHIC EDITOR:
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 method of colour photography and reproduction.
To
JULIAN HUXLEY
in gratitude for his guidance
and encouragement,and in recollection of the
many happy days we have spent together,
watching sea-birds
Table of Contents
CHAPTER 1 THE NORTH ATLANTIC OCEAN: ITS STRUCTURE AND ITS SEA-BIRDS
CHAPTER 2 EVOLUTION AND THE NORTH ATLANTIC SEA-BIRDS
CHAPTER 3 SEA-BIRD NUMBERS AND MAN
CHAPTER 4 WHAT CONTROLS THE NUMBERS OF SEA-BIRDS?
CHAPTER 5 SEA-BIRD MOVEMENTS
CHAPTER 6 NAVIGATION BY SEA-BIRDS
CHAPTER 7 SOCIAL AND SEXUAL BEHAVIOUR
CHAPTER 8 THE TUBENOSES
CHAPTER 9 THE PELICANS
CHAPTER 10 THE SKUAS
CHAPTER 11 THE GULLS
CHAPTER 12 TERNS AND SKIMMERS
CHAPTER 13 THE AUKS
APPENDIX LIST OF SEA-BIRDS OF THE NORTH ATLANTIC AND THEIR DISTRIBUTION
IT IS NATURAL that in a series dealing with the wild life of the British Isles sea-birds would be a subject planned for early publication; and in fact this book was announced as forthcoming five years ago. That it has not been completed earlier is not due to any want of industry on the part of its authors. On the contrary, in their researches for this book they have found their subject so absorbing that they have made the interval an opportunity to continue to publish numerous scientific papers, and two monographs, on sea-birds. James Fisher is the author of The Fulmar (1952); and R. M. Lockley, author of Shearwaters (1942), has just published Puffins (1953). There could, in fact, hardly be any other pair of authors better qualified to describe the sea-birds of the North Atlantic than these with their experience of many years of field work and visits along the coast and islands, from Spitsbergen and Iceland in the cool north, to Madeira and the Salvages in the warm south, of that great demi-ocean. They have made their visits often together, and lived much on the small remote islands where sea-birds breed.
The North Atlantic, busiest ocean in the world, is revealed in the opening chapters not as a monotonous watery plain, but as an intricately varied, densely inhabited foraging ground for sea-birds. This avian community, though remarkably homogeneous in different sections of the broad expanse of the North Atlantic, is fascinating in the variety of the species that compose it, and in the complexity of their movements and migrations. The annual migrations of some species extend the total range of the community from the arctic to the antarctic. These long transatlantic migrations, verified by ringing, take species from east to west between Europe and North America, and from north to south between Greenland and South Africa, Britain and South America.
The authors tell us of the primitive progenitors of the sea-birds, dating from over sixty million years ago, and the evolutionary adventures of their descendants, including the notorious extinction of the strange flightless great auk, the sad decline of many other fine species, also the rediscovery of the cahow after it had been presumed extinct. They have paid special attention to geographical distribution, and have provided a unique collection of maps, giving us, for the first time, the distribution of most species of North Atlantic sea-birds.
Chief among the authors’ interests has been the study of sea-bird numbers. They were largely responsible for organising the surveys of that splendid and typical North Atlantic animal, the gannet, which provided biology with the first reasonably accurate figure for the world population of any single and fairly numerous bird species. They have, from their own notes and those of many amateur and professional bird-watchers, produced interesting statistics of the total population of the fulmar, the Manx shearwater, the puffin and many others. Incidentally, such careful counts, site by site, reveal the continuous change that is going on in sea-bird populations, often directly or indirectly due to man’s influence.
The chapters on life-history are preceded by a general account of social and sexual behaviour, which throws light upon the significance of the prolonged and, to the observer, entertaining, mutual ceremonies of these strictly monogamous birds, their pair-formation, their fidelity to their mates, their nest-sites and their parental duties; at the same time problems of instinct and learning ability are discussed. The life-histories include much original field-work by the authors, who have been responsible for several discoveries concerning the incubation and fledging of a number of sea-birds.
