True or false: Aggression by a Red-tailed Hawk may not be manifested until its second or third year.

The correct response is that aggression by a Red-tailed Hawk may not be manifested until its second or third year, indicating that juvenile hawks often exhibit non-aggressive behavior as they are still maturing. During their first year, they are typically in a stage where they are learning survival skills and are more reliant on their parents or their environment.

As they reach their second or third year, they become more territorial and develop their adult behaviors, which can include aggression, especially during mating season or when asserting dominance over their territory or hunting grounds. This behavior is part of their natural development as they transition from juveniles to fully mature adults capable of defending themselves and their nesting sites.

The other options, while they touch on related topics, do not address the specific developmental timeline of the Red-tailed Hawk's aggression accurately. The question emphasizes the age when these behavior patterns generally emerge, which is crucial for understanding falconry practices and bird behavior in general.