Which material is not suitable for a leash?

A leash is a critical piece of equipment in falconry, as it secures the bird during training and handling while ensuring safety for both the bird and the handler. The choice of material for the leash is important, as it must be strong and durable enough to withstand the pulling forces that may occur when the bird tries to take flight.

Weak plastic is not suitable for a leash due to its inability to provide the necessary strength and stability. Plastic, especially when weak, can easily break or fray under stress, thus posing a risk of loss of control over the bird. In contrast, strong well-oiled leather and strong supple nylon both offer the durability and strength required for falconry purposes, providing a secure connection that can handle the bird's movements without risk of failure.

Therefore, strong, well-constructed materials are essential in ensuring the safety and reliability of equipment used in this activity, highlighting why weak plastic is not an appropriate choice for a leash.