Abstract

Abstract Summary

Overview

The study investigates the impact of low-level radio-frequency (RF) fields on the avian magnetic compass, which is critical for navigation in birds.

Findings

• Weak narrow-band and broadband RF fields in the lower MHz range can disrupt the magnetic compass in birds.
• Zebra finches show disorientation under low-level (~10 nT) Larmor-frequency RF fields unless trained under the same conditions.
• Higher intensity RF fields, with or without harmonics, significantly alter the magnetic compass responses.
• Exposure to broadband RF fields during training or testing phases eliminates the perception of magnetic compass information altogether.

Conclusion

The study highlights the complex effects of RF fields on the avian magnetic compass. These effects vary based on the intensity and type of RF field and the birds' exposure to these fields during training. This could have broader implications for environmental policies and the safety standards regarding electromagnetic field exposure.