What is one common behavior indicating a raptor's contentment?

Rousing refers to the behavior where a raptor will shake its feathers to dislodge any debris, dust, or parasites, and it often occurs after resting or being inactive for a while. When a raptor engages in rousing, it is generally a sign of comfort and contentment in its environment. This behavior allows the bird to refresh its plumage, which is crucial for insulation and aerodynamics. The act of rousing can be seen as the bird expressing that it feels safe and secure enough to engage in this activity.

In contrast, the other behaviors mentioned, such as flapping wings rapidly or mantling over food, indicate different states. Flapping wings rapidly might suggest agitated behavior or an attempt to exercise or display. Mantling, which involves the bird spreading its wings over food, is a protective behavior often indicating that the raptor feels threatened and wants to shield its meal from potential competitors. Preening feathers aggressively can be a sign of stress or irritation rather than contentment, as the bird may be trying to address discomfort or irritation in its feathers. Thus, rousing distinctly signifies a positive state of being for the raptor.