Catchlight
One thing I have noticed often in taking shots of Bald eagles is the catchlight often reflected back in good light. The large eye allows for a large retinal area where the visual image appears. Second, the eagle's eyes contain a high number of features which allow for visual accuracy and colour perception.
These features are called cones. Human eyes also contain cones, but proportionately not as many. Because of the high number of cones, as opposed to rods, perhaps this may enhance light to reflect more in good light as the eagle's vision is not particularly good at night.
Catchlight
One thing I have noticed often in taking shots of Bald eagles is the catchlight often reflected back in good light. The large eye allows for a large retinal area where the visual image appears. Second, the eagle's eyes contain a high number of features which allow for visual accuracy and colour perception.
These features are called cones. Human eyes also contain cones, but proportionately not as many. Because of the high number of cones, as opposed to rods, perhaps this may enhance light to reflect more in good light as the eagle's vision is not particularly good at night.