What does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. Is their vision automatically more zoomed in? Do they have better than 20/20 vision? Is their vision just clearer?

Question

What does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. Is their vision automatically more zoomed in? Do they have better than 20/20 vision? Is their vision just clearer?

In: Biology

Answer 1

They track motion so once something moves in their field of vision their eyes can process the information in that area to tell them what the motion is, the eyes of birds of prey take up most of the skull and a lot of the brain left in the remaining part of the skull is an image processor.