Which hawk is associated with the longest tail for its wing size?

The Sharp-shinned hawk has the longest tail relative to its wing size among the hawks listed. This characteristic is particularly important as it contributes to the bird's agility and maneuverability in flight, especially when hunting in wooded areas. The elongated tail aids in sharp, rapid turns, allowing the Sharp-shinned hawk to navigate through trees and catch small birds in mid-flight.

In contrast, while the other hawks have their distinct features and adaptations, they do not exhibit the same tail-to-wing size ratio as the Sharp-shinned hawk. The American kestrel, although small and agile, has a different proportionate tail length. The Harris' hawk and Red-tailed hawk have more robust bodies and broader wings, which provide them with advantages in different hunting environments but lack the same level of tail length in relation to wing size that characterizes the Sharp-shinned hawk.