During which situation do captive raptors require more food energy per day?

Captive raptors require more food energy in various situations due to physiological and environmental demands. In cold weather, their bodies need to generate additional heat to maintain core temperature, leading to increased energy requirements. During the moulting process, raptors expend extra energy to produce new feathers, which is labor-intensive and requires nutrient-rich resources. When being flown hard, raptors engage in intense physical activity, necessitating more energy to sustain their performance and stamina during exertion. Each of these situations imposes additional energy demands on the birds, making it essential to increase their food intake accordingly. Therefore, all of these factors collectively contribute to a raptor's need for more food energy per day.