Which species of hawk becomes aggressive as they mature to the greatest degree?

The species of hawk that becomes aggressive as they mature to the greatest degree is the Goshawk. This bird is known for its fierce temperament and strong hunting instincts, which can intensify as they grow older. Goshawks are highly territorial and demonstrate aggressive behaviors, especially during breeding season, to protect their nests and territory from potential intruders. Their strong instincts make them adept hunters, but with maturity comes an increase in assertiveness, which is partly driven by their need to assert dominance in their environment.

In contrast, the other species listed may have their own specific behaviors and traits, but none exhibit the same level of aggression as Goshawks when considering the progression associated with aging. Harris's Hawks, for example, are known for their social behavior and cooperation in hunting rather than aggression. Red-tailed Hawks and Prairie Falcons, while also competent hunters, do not share the same level of aggression that characterizes Goshawks as they mature.