What type of material is NOT typically used for a hawk's leash?

A hawk's leash is a crucial piece of equipment used in falconry, providing control and safety for both the bird and the handler. When considering materials for a hawk's leash, they must be strong, durable, and comfortable to ensure that the bird is secure while also allowing for some degree of flexibility and movement.

Strong, well-oiled leather and strong supple nylon are both commonly used materials because they offer the strength needed to safely handle a hawk while being gentle on the bird's body. Leather, particularly when oiled, becomes both durable and pliable, which is ideal for a leash. Nylon is also a favored choice due to its strength, lightweight, and weather resistance.

Woven cotton, while potentially strong, is generally not used for hawk leashes because it can absorb moisture, leading to potential issues such as mildew or degradation in strength when wet. Additionally, densely woven cotton may lack the necessary flexibility and can be rough on the bird's feet compared to the other materials mentioned.

Thus, woven cotton is typically deemed less suitable for a hawk's leash, making it the correct choice in this context.