Date of this Version
At the third seminar I reported that our work on ecological changes at airports was a useful method of controlling bird hazards to aircraft. At the fifth seminar I talked about our studies of bird migration by radar and the use of that knowledge to keep flying aircraft away from bird concentrations. Those techniques are still effective. Since then we have: sought ground cover less attractive to birds than grass; developed methods of controlling earthworms to reduce bird attraction; improved radar data handling; improved bird hazard forecasts; studied light effects on birds; quantified bird spacing in flocks; studied the relation between small mammal populations and the predatory birds they attract to airports; tried out a gasoline- powered model aircraft shaped and flown like a falcon, and published a book on our work.