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(proceedings of a symposium held at the Royal Geographical Society, London, on 28 and 29 September 1967)
The Problems of Birds as Pests covers the proceedings of the symposium held at the Royal Geographical Society in London on 28 and 29 September 1967. The text focuses on the problems posed by birds on agriculture and air transport, as well as control of population, scaring techniques, and warning systems. The selection first discusses prospective considerations concerning bio-acoustics in relation to bird-scaring techniques and recent developments in bird scaring on airfields. Topics include system of behavior and hierarchy of signals, informative content of acoustic signals, and signal-noise.
Front Cover; The Problems of Birds as Pests; Copyright Page; Contributors; Participants in the Discussions; Preface; Table of Contents; Part I. Birds and Aircraft; Chairman's Introduction ; Chapter 1. Birds and Aircraft : the Problems; SUMMARY; ACKNOWLEDGEMENTS; Chapter 2. Prospective Considerations Concerning Bio-Acoustics in Relation to Bird-scaring Techniques; INTRODUCTION; SYSTEM OF BEHAVIOUR AND HIERARCHY OF SIGNALS; THE INFORMATIVE CONTENT OF ACOUSTIC SIGNALS; INTERSPECIFICITY; THE SIGNAL-NOISE RATIO; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; BIBLIOGRAPHY
Chapter 3. Recent Developments in Bird Scaring on AirfieldsSUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Discussion; Chapter 4. Bird Recognition by Radar A Study in Quantitative Radar Ornithology; INTRODUCTION; CHOICE OF RADAR; RADAR CROSS-SECTION; THE DIELECTRIC PROPERTIES OF THE AVIAN ANATOMY; THE RADAR ECHO FROM A SPHERICAL BIRD; THE RADAR ECHO FROM A SPHEROIDAL BIRD; COMPARISON OF THEORY AND EXPERIMENT; WING-BEAT PATTERN (WBP); SPECIES IDENTIFICATION FROM WBP; SPECIES IDENTIFICATION FROM AIR SPEED; SIGNATURES OF BIRD GROUPS; METEOROLOGICAL POINT ANGELS, INSECTS AND BIRDS. A COMPARISON
APPLICATION TO THE BIRD HAZARD PROBLEMSUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Chapter 5. A Bird Warning System for Aircraft in Flight; SUMMARY; Chapter 6. Modification of the Habitat as a Means of Bird Control; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Discussion; Part II: Birds and Agriculture; Chairman's Introduction; Chapter 7. The Rook Problem in North-East Scotland ; THE AVAILABILITY OF FIELD CROPS AND THEIR UTILIZATION BY ROOKS; THE ROOK POPULATION; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Chapter 8. The Oystercatcher -- A Pest of Shellfisheries ; INTRODUCTION
THE GENERAL BIOLOGY OF THE COCKLE AND ITS FISHERIESTHE BURRY INLET COCKLE FISHERY; STUDIES OF THE BIRDS; FOOD INTAKE OF THE BIRDS AND COMPARISON WITH STOCK AND FISHING LEVELS; MOVEMENT STUDIES; CONTROL METHODS; SUMMARY; REFERENCES; Chapter 9. Some Predator-Prey Relationships in Bird Damage and Population Control ; SUMMARY; REFERENCES; Discussion; Chapter 10. Urban Bird Problems; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Chapter 11. Bullfinches and Fruit Buds; THE RECENT INCREASE IN BULLFINCHES; PREVIOUS ATTEMPTS TO REDUCE THE DAMAGE; GENERAL BIOLOGY
THE FEEDING BEHAVIOUR OF A WOODLAND POPULATIONTHE RELATIONSHIP BETWEEN THE SIZE OF THE ASH CROP AND THE EXTENT OF BUD-DAMAGE; THE MOST EFFECTIVE MEANS OF CONTROL; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Chapter 12. The Quelea Problem in Africa; INTRODUCTION; SOCIAL ORGANIZATION AND BEHAVIOUR; FEEDING ECOLOGY; BREEDING ECOLOGY; PROTECTION OF CROPS FROM QUELEA DAMAGE; SUMMARY; ACKNOWLEDGEMENTS; REFERENCES; Discussion; Chairman's Conclusion; Author Index; Scientific Names of species mentioned in the text; Subject Index