What does the term "call off" refer to in falconry?

The term "call off" in falconry specifically refers to the action of attracting a hawk to the trainer, typically by using vocal cues or whistles. This technique is essential for building a strong bond between the falconer and the bird, as well as ensuring that the hawk can be called back reliably during hunts or when it strays too far. Successful application of this term indicates that the falconer has trained the bird to respond to specific calls, enhancing control and communication between the two.

The other options focus on different aspects of falconry but do not align with the specific meaning of "call off." Releasing a hawk, measuring its flight distance, or teaching new signals are all important skills in falconry, but they do not describe the process of attracting a hawk back to the trainer. Understanding these nuances can help aspiring falconers develop a more comprehensive knowledge of the terminology used in their practice.