Contents

Index to pages, when you mouseover "View" will open opposite. By right-clicking you can choose to save them.

View p.160 Introduction

View p.161 Slow revival, present situation

View p.162 continued

View p.163 Nest-sites, productivity

View p.164 Reasons for the population increase

p.165 Extinction and revival

p.166 Acknowledgements, References

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