The mystery behind how birds navigate might finally be solved: it's not the iron in their beaks providing a magnetic compass, but a protein in their eyes that lets them "see" Earth's magnetic fields.
These findings come courtesy of two papers - one studying robins, the other zebra finches.
The fancy eye protein is called Cry4, and it's part of a class of proteins called cryptochromes - photoreceptors sensitive to blue light, found in both plants and animals. These proteins play a role in regulating circadian rhythms.
(Score: 4, Touché) by The Mighty Buzzard on Sunday September 02 2018, @11:09PM
It's not making fun of actual retards, it's making fun of the ones who only act like they're retarded.
My rights don't end where your fear begins.