What is a unique feature of Gyrfalcons in comparison to other falcons?

The unique feature of Gyrfalcons in comparison to other falcons is their pointed wings and thick bodies. Gyrfalcons are the largest of the falcon species and exhibit a robust, muscular build that sets them apart from other members of the Falconidae family. Their pointed wings are designed for powerful and agile flight, allowing them to maneuver effectively while hunting in various environments, especially in harsh Arctic conditions where they are commonly found.

The other characteristics listed do not collectively identify Gyrfalcons. While some other falcon species may share certain traits, such as speed or tail shape, the combination of the Gyrfalcon's distinctive body structure and wing shape is specifically indicative of their adaptability and hunting style.