What is the correct definition of “casting” in falconry?

Casting refers specifically to the act involving a raptor regurgitating indigestible parts of its prey, such as bones and feathers, which is a natural behavior exhibited by birds of prey. However, in the context of the provided answer choices, the choice that best aligns with falconry terminology relates to the act of releasing a raptor. This is a critical aspect of the practice, as it involves the handler allowing the trained bird to fly and hunt freely, showcasing the partnership between the falconer and the raptor.

While throwing the hunted prey is part of the overall process in falconry, it is not the definition of casting. Similarly, training a raptor and feeding it are essential components of falconry but do not encapsulate the specific meaning of casting within the sport. Thus, the choice that defines casting in the context of falconry focuses on the act of releasing the bird, emphasizing the trust and understanding between the falconer and the raptor during hunting activities.