Use of a live-lure is necessary...

Using a live lure in falconry is typically reserved for specific circumstances, and its usage is not a routine requirement. In many regions and circumstances, live lures are only considered acceptable when no other options are available, such as in an emergency where a hawk may not respond or engage with artificial lures. This aligns with best practices in falconry, which prioritize the welfare of both the bird and the potential prey.

It's important to understand that there are ethical considerations involved in the use of live lures. Falconers often seek to mimic natural hunting conditions as closely as possible, and using a live lure may not reflect the skills being developed in the bird. This practice is limited to emergency situations where other training methods or lures are ineffective.

In contrast to the other options, which imply a more routine or necessary use of live lures for specific species or situations, the correct understanding reinforces the responsible use of training methods and highlights the importance of ethical practices in falconry.