In addition, parrots have two foveae, which are areas of the retina that are responsible for high-acuity vision. This means that they can see very small objects with great detail. Parrots also have very good color vision, and they can even see some ultraviolet light that humans cannot.
The combination of monocular vision, a wide field of vision, two foveae, and good color vision gives parrots excellent eyesight. This is essential for them in the wild, as they need to be able to find food, avoid predators, and navigate through their environment.