What qualities should the best bells have according to falconry standards?

The best bells in falconry should produce distinct sounds and be small. When falconers select bells, the sound they make is crucial for tracking the bird's movements while in flight. Distinct sounds help in identifying the location and activity of the bird, even at a considerable distance. Smaller bells are preferable as they add minimal weight to the bird, reducing any hindrance to its natural flying ability while still being audible.

This standard balances the need for effective tracking without compromising the bird's performance. The other options either focus on aspects that do not align with the practical needs of falconry or suggest characteristics that could negatively affect the bird. For instance, producing identical sounds may limit the ability to distinguish between multiple birds in the field. Large bells would add unnecessary weight, affecting how the bird can fly and hunt. Heavy materials could also weigh the bird down, making small, lightweight bells that produce clear and distinct sounds the ideal choice for falconry.