Innovative Buoy Fails to Deter Seabirds from Fishing Nets
Seabirds weren’t fooled by a scarecrow-like buoy with rotating
Science News
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A buoy named Bobby, designed to scare seabirds away from fishing nets in Denmark, proved ineffective after just 46 days of testing. Despite initial success in reducing bird presence, seabirds quickly adapted, showing the challenges of deterring these persistent pests. The findings highlight the need for effective deterrent strategies for fishermen.
- 01The buoy, named Bobby, was designed with googly eyes to mimic a predator and deter seabirds.
- 02Initial results showed a reduction in bird numbers, but seabirds adapted quickly, ignoring the buoy after 23 days.
- 03Cormorants and gulls perched near the buoy, indicating they no longer perceived it as a threat.
- 04Researchers suggest varying deterrents, such as alarm calls or robotic owls, to maintain effectiveness against seabirds.
- 05The study emphasizes the importance of publishing negative results to inform future research and save costs for fishermen.
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A buoy named Bobby, designed to deter seabirds from fishing nets off the coast of Korsør, Denmark, has been deemed ineffective after a study published on May 13 in Royal Society Open Science. Initially, Bobby appeared to reduce the number of seabirds around one fishing net, but after 23 days, the birds adapted and began to ignore the buoy. Researchers, including Gildas Glemarec from the Technical University of Denmark, noted that seabirds, such as greater cormorants and gulls, quickly recognized Bobby as a harmless object, despite its rotating googly eyes intended to mimic a predator's gaze. The study highlights the challenges of bird deterrence, as birds can become accustomed to stationary objects. Environmental biologist Sebastian Wszelaki emphasized the need for varied deterrent strategies, such as using alarm calls or robotic owls, to prevent birds from adapting. The findings serve to inform future research and save costs for fishermen, indicating that while Bobby may not deter seabirds, it could still bring a bit of holiday cheer to Glemarec's office as a quirky decoration.
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The failure of the buoy indicates that fishermen need to explore more effective methods to protect their catch from seabirds, which can impact their livelihoods.
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