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Study: Owl sounds don't deter birds near turbines.
17 Oct
Summary
- Owl decoys and predator calls did not deter birds.
- A Nova Scotia pilot study tested bird deterrents.
- More research needed for effective wildlife protection.
Researchers explored methods to reduce bird collisions with wind turbines, focusing on visual and audio deterrents. A pilot study conducted in Nova Scotia, Canada, between August 22 and September 16, 2016, tested an artificial owl decoy and recorded predator and alarm calls. The goal was to see if these deterrents could alter bird behavior around turbines.
The study, published in 2019, compared bird activity near deterrents to control sites. However, low bird abundance and limited statistical power constrained the pilot project's findings. The results did not establish a statistically significant deterrent effect.
This research indicates that the tested owl models and sounds did not reduce bird activity near turbines. It highlights the need for more robust evidence, as changing bird behavior does not automatically guarantee a reduction in collisions or mortality. Further studies are suggested to explore variations in decoys, sounds, and their effectiveness across different species and locations.
Ultimately, effective wildlife protection strategies for wind energy development require stronger evidence. Differentiating between short-term behavioral changes and long-term outcomes like reduced bird mortality is crucial for implementing truly protective measures.
