ArticleScientific reports2020
Magnetic compass of garden warblers is not affected by oscillating magnetic fields applied to their eyes.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Migratory birds are able to choose the appropriate migratory direction under dim yellow narrowband light.Proceedings. Biological sciences · 2023Article
- Upper bound for broadband radiofrequency field disruption of magnetic compass orientation in night-migratory songbirds.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Prussian blue technique is prone to yield false negative results in magnetoreception research.Scientific reports · 2022Article
- Broadband 75-85 MHz radiofrequency fields disrupt magnetic compass orientation in night-migratory songbirds consistent with a flavin-based radical pair magnetoreceptor.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2022Article
- The Magnetic Compass of Birds: The Role of Cryptochrome.Frontiers in physiology · 2021Review
- Eyes are essential for magnetoreception in a mammal.Journal of the Royal Society, Interface · 2020Article
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Authors and funding
8 authors.
Funding
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Abstract
The magnetic compass is an important element of the avian navigation system, which allows migratory birds to solve complex tasks of moving between distant breeding and wintering locations. The photochemical magnetoreception in the eye is believed to be the primary biophysical mechanism behind the magnetic sense of birds. It was shown previously that birds were disoriented in presence of weak oscillating magnetic fields (OMF) with frequencies in the megahertz range. The OMF effect was considered to be a fingerprint of the photochemical magnetoreception in the eye. In this work, we used miniaturized portable magnetic coils attached to the bird's head to specifically target the compass receptor. We performed behavioural experiments on orientation of long-distance migrants, garden warblers (Sylvia borin), in round arenas. The OMF with the amplitude of about 5 nT was applied locally to the birds' eyes. Surprisingly, the birds were not disoriented and showed the seasonally appropriate migratory direction. On the contrary, the same birds placed in a homogeneous 5 nT OMF generated by large stationary coils showed clear disorientation. On the basis of these findings, we suggest that the disruption of magnetic orientation of birds by oscillating magnetic fields is not related to photochemical magnetoreceptors in their eyes.
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