A Rule of Navigation

You need the right kind of eyes to see the highways in the skies.


Birds get their internal compass from this newly ID’d eye protein (2018):

Two new studies – one examining zebra finches published March 28 in Journal of the Royal Society Interface, the other looking at European robins published January 22 in Current Biology – both single out Cry4, a light-sensitive protein found in the retina. If the researchers are correct, this would be the first time a specific molecule responsible for the detection of magnetic fields has been identified in animals.


More here.

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