Which of the following best identifies a key characteristic of falcons?

A key characteristic of falcons is their sharp vision, which sets them apart from many other birds of prey. Falcons possess exceptionally acute eyesight, allowing them to spot their prey from great distances. This ability is crucial for their hunting strategy, as they often rely on high-speed pursuits to catch birds in flight. Their excellent vision is a result of larger eye size relative to their head and a specialized structure in the eye that enhances their ability to detect movement and detail. This trait makes them highly effective hunters, as they can track and react to their prey with remarkable precision.

While broad wings, strong talons, and bulbous beaks are features found in various birds, they do not uniquely characterize falcons in the way sharp vision does. Falcons are designed for speed and agility in the air, often utilizing their pointed wings for quick maneuvers, but it is their vision that really defines their successful hunting technique.