What is the physiology of the California quail?

The California quail (Callipepla californica) has a compact body with a distinctive topknot of feathers on its head, aiding in thermoregulation and social signaling. Physiologically, it possesses a highly efficient respiratory system adapted for flight, featuring air sacs that facilitate continuous airflow through the lungs. Its diet primarily consists of seeds, grains, and vegetation, which are processed by a muscular gizzard. Additionally, California quails exhibit strong social behaviors, often forming coveys for protection and foraging.