Experiments: basic research on living systems, not technology.
Also: magnetoreception, quantum biology
Migrating birds sense Earth's magnetic field, likely through a light-sensitive protein in their eyes.
Only what the cited papers report.
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Ritz, Adem and Schulten proposed that birds sense magnetic fields through radical-pair chemical reactions in eye photoreceptors.
As reported in: Ritz, Adem, Schulten (2000). A Model for Photoreceptor-Based Magnetoreception in Birds. Biophysical Journal. doi:10.1016/S0006-3495(00)76629-X
Xu and colleagues showed cryptochrome 4 from the European robin, a migratory songbird, responds to magnetic fields in the lab.
As reported in: Xu, Jarocha, Zollitsch et al. (2021). Magnetic sensitivity of cryptochrome 4 from a migratory songbird. Nature. doi:10.1038/s41586-021-03618-9
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