That is essentially the proposed mechanism discussed in the article but the article gives the impression - at least to me - that it is not yet confirmed that this indeed how it works in birds.
EDIT: After skimming the Wikipedia article, both articles agree that it is a possible but not yet confirmed mechanism.
The cryptochrome hypothesis doesn't require detachment from the retina as it's a protein that has directional excitatory preference, not the whole cell.
Interesting. Thanks for the clarification. I find this topic to be of extreme interest
Re:Organisms might be quantum machines
by Aelinsaar on Thursday August 18, 2016 @07:50PM
(#12317074)
That's fascinating, but birds do have their rods and cones attached to the retina. IIRC birds are though to be in some way detecting either directly, or through secondary effect, polarization of light.
https://en.wikipedia.org/wiki/Magnetoreception