Which is a common tool used by falconers for training purposes?

Hoods are commonly used tools in falconry, primarily for training and managing birds of prey. A hood is designed to cover the bird's eyes, which helps to keep it calm and reduces stress in various situations, such as during transport or when introducing the bird to new environments. By blocking their vision, the hood allows falconers to control the bird's exposure to potentially distracting stimuli, making it easier to train them effectively.

In the context of falconry, the proper use of a hood is essential for building trust between the falconer and the bird. With a well-fitted hood, the bird can be safely handled, which is crucial during the early stages of training. The process of getting the bird accustomed to wearing a hood is an important part of its development.

Other options like nets and traps may play roles in capturing or managing birds but are not primarily training tools. A whistle can be useful for recall or commands during training, but it does not have the calming effect that a hood provides, which is fundamental in the initial phases of training a bird of prey.