Which term describes a relaxed state in birds indicated by the shaking of feathers?

The term that describes a relaxed state in birds, characterized by the shaking of feathers, is known as "rouse." When birds rouse, they fluff up their feathers, which can help in various ways, such as redistributing oils from their skin to the feathers, maintaining body temperature, and enhancing their comfort. This behavior allows birds to relax and reposition their plumage, which can also be a social behavior in some species.

Understanding this term can deepen knowledge about bird behavior, especially in terms of how birds maintain their health and comfort. It’s beneficial to recognize that while other terms may relate to bird behavior or anatomy, they do not accurately capture the specific action of shaking or fluffing feathers to enter a relaxed state as rousing does.