It is one of the proposed mechanisms, but apparently it is still unclear what is actually used [1,2]. [1] https://en.wikipedia.org/wiki/Magnetoreception#Propos

It is one of the proposed mechanisms, but apparently it is still unclear what is actually used [1,2]. [1] https://en.wikipedia.org/wiki/Magnetoreception#Proposed_mechanisms https://en.wikipedia.org/wiki/Magnetoreception#Proposed_mech... [2] https://www.scientificamerican.com/article/how-migrating-birds-use-quantum-effects-to-navigate/ https://www.scientificamerican.com/article/how-migrating-bir...