They use their right and left eyes differently. Some may sleep on the wing. They may even be able to see the earth's magnetic field. Welcome to the amazing world of bird vision.
Can Birds See Color?
Hummingbirds Can See Colors We Humans Can't
5 reasons why bald eagles are the best
Can Parrots See Color? Vet Approved Facts & FAQ
Bird Vision - How Birds See Color Binocular & Monocular Vision
Do any eagle species eat fish, or can only owls and other raptors
How Do Birds See? Human And Bird Vision Comparison
Bird Vision - How Birds See Color Binocular & Monocular Vision
Bird vision - Wikipedia
Getting a bird's eye view - Curious
Bird Vision
See the World Through Your Pet's Eyes With This Filter - Katzenworld
question abouta bird vision
How does a human's vision compare to that of a bird of prey? - Quora
Bird vision - Wikipedia