What term is used to describe the act of creating a portable perch in falconry?

The term "cadge" refers specifically to a type of portable perch used in falconry. This structure allows falconers to temporarily accommodate their birds when they are not in flight or being handled. A cadge is typically designed to be lightweight and easy to transport, making it practical for use in the field or during training sessions.

This term is particularly relevant as it not only denotes the physical aspect of the perch but also encompasses the functional requirement of having a movable and convenient setup for the birds. The knowledge of such equipment is crucial for falconers, as it directly impacts the management and well-being of the birds during outings.

Other terms provided, while related to perching, do not specifically denote the portable nature that "cadge" embodies. "Stand" could refer to various types of supports for birds, but it lacks the mobility aspect. "Mezzo" and "percher" are not recognized terms in the context of falconry perches, further solidifying "cadge" as the precise answer.