What type of behavior is indicative of a relaxed hawk?

A relaxed hawk displays behaviors that indicate comfort and a calm state, and preening and rousing are key indicators of this relaxation. When a hawk preens, it is not only maintaining its feathers for optimal condition but also signaling that it feels safe and secure in its environment. Rousing, which involves fluffing up feathers to help with insulation or to shake off dirt and debris, further exemplifies a state of contentment.

In contrast, fighting with other birds would typically denote aggression or territorial behavior, excessive vocalizations can signify stress or a desire to communicate distress, and hiding or refusing to eat indicate anxiety or health issues. Therefore, preening and rousing distinctly reflect a hawk's relaxed demeanor, making it the correct choice.