The Bald Eagle’s eyeball is almost the same size as the human eye. Given their smaller heads compared to ours, the eyeballs fill most of their skulls. While most of us have 20/20 vision, eagles have an amazing 20/5 vision. That is, they can see a subject as clearly as we can from five feet away from a distance of 20 feet. We have a peripheral vision of 180 degrees, with eagle eyes fixed in their sockets, angled 30 degrees, and have a 340-degree visual field of view. The eagles move their heads every five seconds to the left and right or straight ahead. But after they locate their prey, they look straight ahead and dive for the kill. As well, to make it easier for the eagle to spot their prey. They are also able to spot a rabbit from as far as 3.2 km away. Like all birds, they also have much superior colour vision than we do. Able to see more vivid colours, better able to discriminate between more shades, and can also see ultraviolet light. This comes in handy when being able to detect UV-reflecting urine trails of a small prey. These and other vision features help them find food in extreme conditions to survive, and are able to see me before I even know that they are in the area.
