British Seals. H. R. Hewer

Читать онлайн книгу.

British Seals - H. R. Hewer


Скачать книгу
d="u9e7c5f68-8bf8-5570-b82a-71124e1b1989">

      

image

      William Collins

       An imprint of HarperCollinsPublishers Ltd 1 London Bridge Street London SE1 9GF WilliamCollinsBooks.com

      First published 1974

      This eBook edition published by William Collins in 2019

      © H. R. Hewer 1974 The author asserts his moral rights to be identified as the author of this work

      A catalogue record for this book is available from the British Library.

       All rights reserved under International and Pan-American Copyright Conventions. By payment of the required fees, you have been granted the non-exclusive, non-transferable right to access and read the text of this eBook on-screen. No part of this text may be reproduced, transmitted, downloaded, decompiled, reverse engineered, or stored in or introduced into any information storage and retrieval system, in any form or by any means, whether electronic or mechanical, now known or hereinafter invented, without the express written permission of HarperCollins Publishers.

      HarperCollinsPublishers has made every reasonable effort to ensure that any picture content and written content in this ebook has been included or removed in accordance with the contractual and technological constraints in operation at the time of publication.

      Source ISBN 9780007311118

      Ebook Edition © FEBRUARY 2019 ISBN: 9780007406463

      Version: 2019-02-13

      This ebook contains the following accessibility features which, if supported by your device, can be accessed via your ereader/accessibility settings:

       Change of font size and line height

       Change of background and font colours

       Change of font

       Change justification

       Text to speech

       Page numbers taken from the following print edition: ISBN 9780007311118

      EDITORS:

      Margaret Davies C.B.E. M.A. Ph.D.

      Sir Julian Huxley F.R.S. M.A. D.Sc.

      John Gilmour M.A. V.M.H.

      Kenneth Mellanby C.B.E. Sc.D.

      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.

      CONTENTS

       COVER

       TITLE PAGE

       2. The grey seal – introductory

       3. The grey seal – age determination, longevity and maturity

       4. The grey seal – reproduction

       5. The grey seal – annual moult and spring behaviour

       6. The grey seal – feeding and food; pre-breeding assemblages

       7. The grey seal – the breeding rookery: cow and pup

       8. The grey seal – the breeding rookery: bulls, territory and mating

       9. The grey seal – moulters, dispersal, marking experiments and later movements

       10. The grey seal – population dynamics, mortality and pregnancy rates

       11. The common seal – introductory

       12. The common seal – reproduction, pup, moulting, food and numbers

       13. Other species of pinnipede

       14. Conservation of British seals

       PICTURE SECTION

       APPENDICES: A Classification of Pinnipedia

       B Breeding rookeries of grey seals

       C Life-tables for grey seal cows and bulls

       D Farne Island seal counts, 1956–1968

       E Research and world conservation of seals

       FOOTNOTES

       BIBLIOGRAPHY

       INDEX

       ACKNOWLEDGEMENTS


Скачать книгу