What are the essential features a mews should provide?

The essential features a mews should provide include protection from predators, the elements, and good ventilation because these factors are critical for the health and well-being of the raptors housed within. Protection from predators ensures that the falcon or hawk can feel secure and not be stressed by the presence of potential threats. Adequate shelter from the elements is vital to maintain the bird’s temperature and humidity levels, which is particularly important for their feathers and overall health. Good ventilation helps to maintain air quality and prevent the buildup of harmful gases or moisture that could lead to respiratory issues. Together, these features create a safe and comfortable environment that mimics their natural habitat as closely as possible, promoting the birds' physical health and psychological well-being.

While aspects such as insulated walls, a good food supply, and sufficient space for wing flapping are certainly important in various contexts of falconry, the comprehensive protection and environmental factors found in option C are foundational for maintaining a successful mews.