If you sever the ophthalmic from the trigiminal nerve ,from beak to brain of a pigeon then the pigeon can no longer follow the magnetic field . This correlates with a sensory deprivation and demonstrates just how important our senses are to us.
In 2021 it was also discovered that birds who travelled long distances have a particular molecule in the eye that may allow a bird to actually see the earths magnetic field. And so a pigeon is using many of its senses in order to navigate, in order to fly.
I have produced some videos on my Youtube channel on sensory processing issues that humans may encounter. Please feel free to click on a video shown on this website. If you wish me to discuss a different issue to those shown please let me know.
Thank you.