Evaluation of a radar-activated, demand-performance bird hazing system

We evaluated a radar-activated integrated hazing system for the protection of waterfowl at large contaminated ponds at a power plant. The hazing devic es in the system included acoustic alarm calls, pyrotechnics and chemical r epellents dispersed in the form of a bird lear-gas. Unlike, timed interval systems, or systems with random activation sequences, birds did not habitua te to the demand-performance system tested. Over the course of a year, we d ocumented that waterfowl were 12.5 times less likely to fly over the hazed contaminated ponds relative to a non-hazed control pond. Of the waterfowl t hat did fly over both ponds, the likelihood of landing on the hazed contami nated pond was 4.2 times Less relative to the control. Hazing also altered the flight direction and altitude of waterfowl. Mortality during the year t he hazing system was in place decreased by a factor 6.5 relative to previou s years where the system was not in operation. Demand-performance integrate d hazing systems show promise in protecting large areas where placement of operators is not practical for logistic, safety, or long-term cost reasons. Published by Elsevier Science Ltd.