A cadge is primarily used to...

A cadge is primarily utilized for transporting a bird to the field. It is designed to hold a bird securely while enabling the falconer to easily carry it to a desired location for hunting or training. This specialized equipment allows for the transportation of multiple birds at once, enhancing convenience during outings.

While restraint could be part of a cadge's function when transporting a bird, its primary purpose focuses on movement rather than securing the bird during training exercises or for signal direction in transmitters. Therefore, the emphasis on the cadge as a transport device highlights its essential role in the practical aspects of falconry, ensuring that birds can be moved efficiently and safely to the field where their activities occur.