Migratory Birds Use Head Scans to Detect the Direction of the Earth's Magnetic Field

@article{Mouritsen2004MigratoryBU,
  title={Migratory Birds Use Head Scans to Detect the Direction of the Earth's Magnetic Field},
  author={Henrik Mouritsen and Gesa Feenders and Miriam Liedvogel and Wiebke Kropp},
  journal={Current Biology},
  year={2004},
  volume={14},
  pages={1946-1949}
}
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It is shown that at least one CRy1 and one CRY2 exist in the retina of migratory garden warblers and that garden-warbler CRY1 (gwCRY1) is cytosolic, well placed to possibly be the primary magnetic-sensory molecule required for light-mediated magnetoreception.
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