Fascinating study I found that suggests some birds can actually visualize Earth's magnetic field. Check it out! User aangush, in the Biology subreddit, 20 Sep 2019
TIL bird vision can include the literal ability to see magnetic fields through cryptochromes which are photo-receptive cells, as in covering their eyes would still blind them unlike other animals with magnetoception. User Andrac25, in the Today I Learned (TIL) subreddit, 13 Dec 2015